The following is a list of activity as seen by the observers at the Mauna Loa Solar Observatory (MLSO) in Hawaii. Additional information may be added by the personnel at the High Altitude Observatory (HAO) where the data is processed and analyzed. The initials of the HAO personnel are indicated in parenthesis. Dates are given by calendar day and by year/day-of-year. Key of abbreviations: ADF - Active dark filament AFS - Arch filament system AP - Active Prominence APR - Active Prominence Region AR - Active Region ASR - Active Surge Region BOU - Boulder, Colorado Observatory BSD - Bright surge on the disk BSL - Bright surge on the limb CME - Coronal Mass Ejection CRN - Coronal rain DPMON - Digital prominence monitor DSD - Dark surge on the disk DSF - Disappearing filament EPL - Eruptive prominence on the limb MDP - Mound prominence MLSO - Mauna Loa Solar Observatory QP - Quiescent prominence PA - Position angle (measured counterclockwise from north pole. eg. east equator = 90 degrees, west equator = 270 degrees) RV - Radius vector UT - Universal Time WL - White light NOTE: (bracketed letters indicate observer's initials) ***************************************************************************** 1/1/98 98d001 NO DATA ARCHIVED CHIP: No data archived. (td) 1/2/98 98d002 NO DATA ARCHIVED CHIP: No data archived. (td) 1/3/98 98d003 NO DATA ARCHIVED CHIP: Nice shock wave event in SW quadrant visible from ~18:32 until ~19:38. Material seems to be ejected SE-ward from the AR with some of it retracting toward the AR. Possible EPL on the SW limb ~PA 240. Prominence loop expands and then dissipates so this may not be an eruption, may just be doppler- shifting out of HeI. Occurs between start of day until ~20:31. (td) 1/4/98 98d004 NO DATA ARCHIVED CHIP: No data archived. (td) 1/5/98 98d005 No apparent coronal activity. CHIP: No apparent activity. (td) 1/6/98 98d006 No apparent coronal activity. CHIP: No apparent activity. (td) 1/7/98 98d007 No apparent coronal activity. CHIP: No apparent activity. (td) 1/8/98 98d008 NO DATA ARCHIVED CHIP: No apparent activity. (td) 1/9/98 98d009 NO DATA ARCHIVED CHIP: No apparent activity. (td) 1/10/98 98d010 NO DATA ARCHIVED CHIP: Very large EPL in progress on NW limb ~PA 280. Material can be followed all the way out to the edge of the FOV. Trajectory measurements possible on some of the features. Material is slowly travelling westward. (td) 1/11/98 98d011 NO DATA ARCHIVED CHIP: No apparent activity. (td) 1/12/98 98d012 No apparent coronal activity. CHIP: No apparent activity. (td) 1/13/98 98d013 EPL at PA: 80-85 before 19:36-20:09 UT. No apparent coronal activity. CHIP: Beautiful EPL at ~PA 90 beginning ~18:41 until ~22:15. Ejected material can be followed until it exits the FOV of the instrument. There is a second EPL in progress at beginning of the observing day at PA 45. Visible only in the first couple of frames of the day. Seems to be moving quickly with material travelling eastward. Difficult to track this one. (td) 1/14/98 98d014 NO DATA ARCHIVED CHIP: No data archived. (td) 1/15/98 98d015 NO DATA ARCHIVED CHIP: No data archived. (td) 1/16/98 98d016 NO DATA ARCHIVED CHIP: Eruptive prominence on the East limb (PA 90) beginning ~19:04 until ~20:45. Difficult to see any ejected material, need to look at H-alpha for this time. (td) 1/17/98 98d017 NO DATA ARCHIVED CHIP: No data archived. (td) 1/18/98 98d018 NO DATA ARCHIVED CHIP: Eruptive prominence on the NE limb ~PA 55. Begins ~19:23 and is visible 19:41. Very fast, material is travelling eastward. There is a possible second EPL in the same location at the end of the day, visible only in the last frame, 22:16. 1/19/98 98d019 No apparent coronal activity. CHIP: No apparent activity. (td) 1/20/98 98d020 No apparent coronal activity. CHIP: No apparent activity. (td) 1/21/98 98d021 NO DATA ARCHIVED CHIP: No apparent activity. (td) 1/22/98 98d022 NO DATA ARCHIVED CHIP: No apparent activity. (td) 1/23/98 98d023 No apparent coronal activity. CHIP: No apparent activity. (td) 1/24/98 98d024 No apparent coronal activity. CHIP: No apparent activity. (td) 1/25/98 98d025 NO DATA ARCHIVED CHIP: Prominence eruption on NE limb. Very slow, and is visible throughout the observing day. Material swirls slowly over limb and travels eastward. (td) 1/26/98 98d026 End of CME possible at start of day 18:54 UT. The range looks to be from PA: 45-90. At PA 80 there is a smaller loop structure that appears to be moving outward. There is not enough movement outward to be a CME. (djs) MK3 definitely missed the front of east limb and doesn't catch the west limb event. Data ends at 22:06. LASCO: There is an east limb CME 17:27- early Jan 27. LASCO: West limb CME begins at 23:27. CHIP: Prominence eruption on west limb PA 270, begins ~18:22 and is visible until ~19:25. Very faint. (td) 1/27/98 98d027 CME - faint loop/cav with prominence core. Data is noisy. Time-height possible but will be tough. Event at ~130 degrees and in progress at start of observations (17:51). Slow-moving. prominence core is still in field-of-view when observations end at 22:10. Prominence moves outward non-radially (equatorward). Occulted Halpha shows prominence eruption underway in first image at 17:37. Most, if not all of material appears to drain back by last image at 21:22. CHIP movie shows the prominence eruption but very tough to see the drainage. LASCO does see the CME but there are large data drop-outs. (JB) EPL at PA: 130 CHIP: EPL associated with above mentioned CME is in progress at beginning of day and visible until ~20:12. Material is travelling eastward. (td) 1/28/98 98d028 NO DATA ARCHIVED CHIP: Material appears to be leaving active region on the south disk, follow a magnetic loop over AR and return to opposite side. No apparent shock wave associated with this but the feature can be followed and measureed. (td) 1/29/98 98d029 No apparent coronal activity. CHIP: No apparent activity. (td) 1/30/98 98d030 No apparent coronal activity. CHIP: No apparent activity. (td) 1/31/98 98d031 No apparent coronal activity. CHIP: No apparent activity. (td) 2/1/98 98d032 NO DATA ARCHIVED CHIP: No apparent activity. (td) 2/2/98 98d033 NO DATA ARCHIVED CHIP: Disappearing filament in the NW quadrant. Present at beginning of the day and by the end, it has dissolved away. (td) 2/3/98 98d034 NO DATA ARCHIVED CHIP: No apparent activity. (td) 2/4/98 98d035 NO DATA ARCHIVED CHIP: No apparent activity. (td) 2/5/98 98d036 NO DATA ARCHIVED CHIP: No apparent activity. (td) 2/6/98 98d037 No apparent coronal activity. CHIP: No apparent activity. (td) 2/7/98 98d038 Possible CME in NE near PA: 30 It is very fast from 19:50-20:05 UT. (djs) I see the possible CME as well and it is faint and only in a few frames. If it is a CME, the front appears to be beyond or near the edge of the FOV of MK3 between 19:50 and 19:53 which would make it extremely fast. LASCO does not see this - there is a CME in this location earlier (~15:00) but no new CME at this time. This may be polarization noise of some kind. (JB). CHIP: Prominence at PA 30 doesn't show any activity, not much to report in CHIP regarding the above mentioned CME. No other apparent activity. (td) There is an active prominence between ~55 and 80 degrees at the time of the possible CME - 19:16 to ~20:24. (JB) 2/8/98 98d039 No apparent coronal activity. CHIP: No apparent activity. (td) 2/9/98 98d040 No apparent coronal activity. CHIP: No apparent activity. (td) 2/10/98 98d041 No apparent coronal activity. CHIP: No apparent activity. (td) 2/11/98 98d042 No apparent coronal activity. CHIP: No apparent activity. (td) 2/12/98 98d043 No apparent coronal activity. CHIP: No apparent activity. (td) 2/13/98 98d044 No apparent coronal activity. CHIP: No apparent activity. (td) 2/14/98 98d045 No apparent coronal activity. CHIP: Two possible shock waves visible. 1. In progress at beginning of day in SW quadrant. Visible until 18:20. Material seems to be travelling SE-ward. 2. Starts at 18:29 in the SE quadrant in the Western-most active region. Visible until 19:14. (td) 2/15/98 98d046 NO DATA ARCHIVED CHIP: No apparent activity. (td) 2/16/98 98d047 No apparent coronal activity. CHIP: No apparent activity. (td) 2/17/98 98d048 No apparent coronal activity. CHIP: No apparent activity. (td) 2/18/98 98d049 No apparent coronal activity. CHIP: Shock wave appearing from active region in the SW quadrant. Begins ~20:13 and visible until ~21:10. Material seems to shoot out and then retrace it's path back into the active region. (td) 2/19/98 98d050 No apparent coronal activity. CHIP: Very faint EPL at ~PA 210 in progress at beginning of day and visible until ~19:50. There is also a very quick shock wave at the end of the day. It is visible only in the last two frames of the day and it is possible that this is not a shock wave at all (but I thought I would put it in the logs anyway). It appears in the NW quadrant directly below the large AR in the NW. Visible only frames 21:05 and 21:08. (td) 2/20/98 98d051 An eruptive prominence is visible in the mk3 data. (djs) No apparent coronal activity. CHIP: EPL in progress at PA 260 and is visible until ~19:34. (td) 2/21/98 98d052 No apparent coronal activity. CHIP: Nice shock wave in NW quadrant beginning ~18:52 until ~20:16. Material seems to be travelling straight out. (td) 2/22/98 98d053 CME between PA: 60-80 from 17:38-18:39 UT. (djs) CME in progress when observations begin at 17:38. Front is already near or beyond the edge of the FOV. Time/height will be difficult. (JB) CME is visible in LASCO. Occulted Halpha: Prominence eruption already underway at 17:39. Some prominence material appears to be ejected and some drains sunward. (JB) CHIP: EPL in progress at beginning of day ~PA 90 and is visible until ~18:35, probably related to MK3 CME, very faint. There is a possible shock wave at the center of the solar disk which begins ~20:32 and is visible until 21:23. Possible EPL on western limb ~PA 270 difficult to get start times but there is activity there, may not be an actual EPL. (td) I don't see the wave but I do see a possible flare and/or surge of prominence material just sw of disk center. (JB) 2/23/98 98d054 No apparent coronal activity. CHIP: Very large filament eruption on disk on northern prime meridian. Begins ~20:50 and continues until end of day. Very complex structure forms toward the end of day, possibly due to prominence material traveling toward line of sight. This looks like a two ribbon structure. LASCO and EIT data would be interesting to look at to check for halo event. Some material can be seen shooting southward at high speed toward the end of the day. Very beautiful. (td) 2/24/98 98d055 CME at PA: 240-290 from 17:40-19:00 UT. Seen by the observers at Mauna Loa Confirmation of CME at PA:240. (djs) CME is a faint loop/cavity. No obvious core. Time-height possible. CME doesn't look like much in LASCO. Visible at 18:27 as a blob. No well-defined front. (JB) CHIP: Prominence eruption visible at ~PA 240 beginning at 18:40, and remains visible until ~19:04. May correspond to CME reported above. (td) Occulted Halpha: Active or eruptive prominence. Bright spray at 17:43. Nearly gone in next frame at 17:49. Draining of small blobs until ~18:05. See active prominence that is visible in CHIP at 18:40. Spray not seen in CHIP movie. (JB) 2/25/98 98d056 No apparent coronal activity. CHIP: Possible shock wave in NW quadrant toward the end of the day. The data end as soon as the activity begins so it is hard to say exactly what it is. Begins ~21:45 in the active region in the NW, and continues to the end of day. Appears to travel northward. There is also some prominence activity on the NE limb ~PA 50 but it is difficult to classify, may be prominence eruption. Begins ~17:48 and lasts til ~18:30. (td) 2/26/98 98d057 No apparent coronal activity. CHIP: No apparent activity. (td) 2/27/98 98d058 No apparent coronal activity. CHIP: No apparent activity. (td) 2/28/98 98d059 No apparent coronal activity. CHIP: No apparent activity. (td) 3/1/98 98d060 MK3: CME Loop at ~295 degrees. Outer edge of loop is fuzzy and faint. Time/height is possible but tough. There appears to be a prominence(?) core within the cavity. (JB) 18:43-19:55 (Sitongia) EPL in progress at West Limb 17:38 CHIP: Very large EPL in progress at 17:21 and visible until ~19:12 at PA 280. Material moves slowly at first and then takes off ~18:48 and travels westward. (td) 3/2/98 98d061 No apparent coronal activity. CHIP: Apparent shock wave in SW quadrant emanating from western-most active region. Begins ~18:11 and visible until ~18:59. Travelling SE-ward. There is an EPL at ~PA 300-310 beginning ~19:11 thru ~20:35, material is travelling southward. (td) 3/3/98 98d062 No apparent coronal activity. CHIP: No apparent activity. (td) 3/4/98 98d063 There is swelling of the helmet streamer near position angle 30 degrees. There is movement outward from the limb, but this doesn't represent a classical CME. This is a possible CME. IF it is a CME it began prior to the start of observations at 17:28 and as a result we missed the front so I would call this an anomoly. There are no LASCO movies available for this day so it is not possible to verify a CME in LASCO (JB). CHIP: No apparent activity related to the event mentioned above at PA 30. There is a shock wave in the SW quadrant emmanating from the active region there. Begins ~17:34 and lasts until ~18:04, this is followed by two more, smaller ones, (one at 19:28 and the second at 21:10). (td) 3/5/98 98d064 EPL at PA: 215-250 out to RV=1.3 Occulted Halpha: EPL well above limb when observations begin at 17:39. Much of the material drains down the equatorward 'leg' but some of the material is ejected with the CME. Eruption appears to be over by 20:42. (JB) Halpha disk: Nothing visible above the disk but there is activity in the filament in sw near the limb. This could be part of the drainage seen from the erupting SW prominence. There is also motion of material (in emission) near the footpoint of the equatorward leg of the EPL. (JB) CME in progress in southwest at sight of EPL, as seen by the observers. Top of CME may be at or beyond the FOV of MK3 when observations begin at 17:44. Beautiful swirling motions of embedded prominence are seen in MK3 and the prominence moves very non-radially (equatorward). (JB) Confirmation of the CME in progress at 17:44-20:37 UT. It occurs near position angle 230 degrees. It is a nice double loop CME. (djs) CHIP: Very large prominence eruption in progress at beginning of data (17:30) travelling westward. Leaves CHIP wavelength ~18:29. There is activity in the SW quadrant of the disk which seems related to the eruption. Lots of swirling of material can be seen travelling NE-ward and possibly back to the surface after the eruption. (td) EPL visible and it appears the poleward footpoint is visible on the disk. Motion and disappearance of some of the material against the disk immediately following the eruption (similar to what is seen in occulted Halpha). Most of the material appears to be ejected (unlike what is seen in occulted halpha), but you can just barely see some of the material draining down the equatorward 'leg' of the prominence. (JB) 3/6/98 98d065 No apparent coronal activity. CHIP: Prominence eruption on the SE limb ~PA 135 begins ~19:46 and visible until 20:13. (td) 3/7/98 98d066 No apparent coronal activity. CHIP: Apparent shock wave in the SE quadrant appearing ~20:59 and visible until ~21:11. (td) 3/8/98 98d067 Small CME in progress since 19:20 UT at PA: 110 as seen by the observers. CME #1) CME at PA: 90 from 18:21-18:54 UT. Very faint! Confirmation of CME at PA: 110 from 19:14-19:58 UT. There is a possible loop followed by embedded material. I would say these are 2 parts of the same CME. The material at 110 degrees may be part of the core from the first 'very faint' CME seen at about 90 degrees. (JB) LASCO: Similar appearance with material showing up first at ~90 deg. and then just south of that shortly after. I would say this is one CME. CME #2 ??) possible CME at PA: 300 from 18:54-19:26 UT. (djs) Very faint - no clear front. Could this be part of CME#1 which may be originating above the solar disk? (JB) EIT: Only obvious activity is in SE at and near the solar limb. (JB) No obvious CME in west in LASCO. Tiny blob appears to be ejected along nw streamer but is this really a CME? Occulted halpha: Active prominence in SE in location of CME. Some prominence material may be ejected. Some material appears to be moving outward and then sunward. More material appears to be falling sunward than is moving outward. (JB) Loop of prominence material appears in NE above the limb from 21:14 to 21:29 when observations end. (after CME). (JB) Small active prominence in NW. Halpha Disk: Not much activity visible. (JB) CHIP: Material can be seen entering and leaving the CHIP wavelength at ~PA 100 beginning ~18:20 and lasting until ~19:20. No details or features can be discerned (at least not by me). Appears to correspond to the MK3 CME mentioned above. Some draining of material (sunward motion) is visible (JB). Some activity in the SE quadrant appearing at about 17:56 and emanating from the topmost active region in the quadrant, lasts until ~18:11. There is a prominence eruption on the NE limb ~PA 45 which begins at 21:14 and continues to end of observing day ~21:35. (td) 3/9/98 98d068 No apparent coronal activity. CHIP: Interesting filament activity in the south. I hesitate to call it a filament eruption, but the filament located due south on the disk appears to rise up, follow the magnetic field for a while and then it may either drain down or erupt outward. It is difficult to tell because the data end at the time when it may be possible to tell whether it is erupting or not. Perhaps LASCO or EIT data could clarify this. Motion seems to begin ~21:07 and continue to end of observing day ~22:04. (td) 3/10/98 98d069 No apparent coronal activity. CHIP: No apparent activity. (td) 3/11/98 98d070 NO DATA ARCHIVED CHIP: No data for this day. (td) 3/12/98 98d071 No apparent coronal activity. CHIP: Possible shock wave in SW quadrant at ~ 20:20, small jet of material leaving a small active region. (td) 3/13/98 98d072 Possible CME at PA: 250-280 beginning 21:07 UT. as seen by the observers. Confirmation of CME at PA: 270. There is a classic advancing loop followed by embedded prominence material. It takes place over 21:01-21:39 UT. (djs) CHIP: At about 21:16, the prominence at the above PA shows a dimming but little else. No other apparent activity corresponding to the above CME could be observed. There is a possible shock wave in the SW quadrant of the disk which appears ~18:14. (td) 3/14/98 98d073 No apparent coronal activity. CHIP: Possible prominence eruption on western limb (PA 260). At the very least, there is an active prominence there. (td) 3/15/98 98d074 No apparent coronal activity. CHIP: No apparent activity. (td) 3/16/98 98d075 No apparent coronal activity. CHIP: No apparent activity. (td) 3/17/98 98d076 CME at PA: 265 from 20:24-21:05 UT. (djs) CHIP: Small amount of prominence material can be seen lifting off of limb at ~19:44, corresponding to above event, can be followed until ~20:11. No other apparent activity. (td) 3/18/98 98d077 NO DATA ARCHIVED CHIP: No data for this day. (td) 3/19/98 98d078 CME at PA: 100 from 19:05-19:40 UT. (djs) CHIP: Possible prominence erutption corresponding to above event. eruption appears as a stream of material jetting outward at about PA 100. Not much detail. (td) 3/20/98 98d079 No apparent coronal activity. CHIP: Possible prominence eruption on eastern limb ~PA 90 and begins ~17:12 (beginning of observing period). (td) 3/21/98 98d080 NO DATA ARCHIVED CHIP: Possible prominence eruption on NW limb ~PA 270-280. Begins ~18:53. (td) 3/22/98 98d081 NO DATA ARCHIVED CHIP: No apparent activity. (td) 3/23/98 98d082 No apparent coronal activity. CHIP: No apparent activity. (td) 3/24/98 98d083 No apparent coronal activity. CHIP: No apparent activity. (td) 3/25/98 98d084 No apparent coronal activity. CHIP: No apparent activity. (td) 3/26/98 98d085 No apparent coronal activity. CHIP: Surge of material along the NW quadrant of the disk. Appears ~19:14 and travels SW-ward toward active region. (td) 3/27/98 98d086 CME at PA 190-220 from 20:42 - 23:00 UT as seen by observers. CHIP: Very faint passage of material can be seen within the time frame listed above at about PA 190. May be material doppler shifting through the CHIP wavelength. Appears ~21:00. (td) There is activity on the solar disk in the NW quadrant along a small filament. Material is flowing SW-ward. Begins ~19:41. (td) 3/28/98 98d087 No apparent coronal activity. CHIP: Very large filament eruption in NW quadrant of solar disk. Begins ~19:31 and effects can be seen until the end of the observing day. (td) 3/29/98 98d088 NO DATA ARCHIVED CHIP: No data. (td) 3/30/98 98d089 No apparent coronal activity. CHIP: Interesting activity on NE limb. Small amount of material is moving southward along limb as if being pushed aside. Begins ~19:55. (td) 3/31/98 98d090 No apparent coronal activity. CHIP: No apparent activity. (td) 4/1/98 98d091 No apparent coronal activity. CHIP: No apparent activity. (td) 4/2/98 98d092 No apparent coronal activity. CHIP: No apparent activity. (td) 4/3/98 98d093 No apparent coronal activity. CHIP: No apparent activity. (td) 4/4/98 98d094 CME reported by observers at PA: 240 from 18:00-18:40 UT. Confirmation of CME at PA:260 from 17:55-18:38 UT. (djs) CHIP: No apparent activity. (td) 4/5/98 98d095 Mp apparnet coronal activity. CHIP: Possible prominence eruption on SE limb ~17:25. Material appears to shoot out and then some of it returns. Moving pretty fast. (td) 4/6/98 98d096 No apparent coronal activity. CHIP: No apparent activity. (td) 4/7/98 98d097 No apparent coronal activity. CHIP: No apparent activity. (td) 4/8/98 98d098 2 CME's on opposite limbs. This 1st is very faint, but the cavity is easy to follow outward. It is at PA: 320 from 17:43-20:10 UT. The 2nd is also faint, but can be seen moving out at PA: 80 from 19:20-20:10 UT. It is much faster than the 1st CME. (djs) CHIP: There is a stream of material which may be associated with the 2nd above mentioned CME on the NE limb. It is already there when the day begins and slowly fades over the course of a couple of hours. I can find no corresponding activity associated with the 1st CME. There is a brightening in the active region in the SE quadrant. Appears ~21:44 and looks like it is following an arcade. (td) 4/9/98 98d099 No apparent coronal activity. CHIP: Large active region in the SE quadrant shows small-scale disharge of material ~19:12. Not sure if it could be called a shock wave but it is moving quickly. There is an even smaller one just before it at ~18:12 UT. (td) 4/10/98 98d100 No apparent coronal activity. CHIP: No apparent activity. (td) 4/11/98 98d101 No apparent coronal activity. CHIP: No data for this day. (td) 4/12/98 98d102 No apparent coronal activity. CHIP: No apparent activity. (td) 4/13/98 98d103 No apparent coronal activity. CHIP: Bright spot travelling toward the SE ~17:40 (very faint) originates in the SW quardant seems to stay on disk. (td) 4/14/98 98d104 No apparent coronal activity. CHIP: No apparent activity (td) 4/15/98 98d105 No apparent coronal activity. CHIP: Eruption from large active region in SW which begins ~21:11. Travels westward and can be followed past limb. There is activity in active region prior to eruption which begins ~18:30. Some material from this activity can be followed SE-ward. (td) 4/16/98 98d106 No apparent coronal activity. CHIP: Possible filament eruption on west limb ~20:00 (very faint). Some sort of eruption occurred in the active region in SW ~19:45. Material can be followed from this active region travelling SE out to limb. (td) 4/17/98 98d107 No apparent coronal activity. CHIP: Shock wave emanating from active region in NW quadrant, travelling NE. Seems to be associated with another, fainter one NE of active region. Starts ~18:45. Interesting activity on SW limb as well but not sure how to interpret it. (td) 4/18/98 98d108 No apparent coronal activity. CHIP shows cool activity on the SW limb. A large blob surges at ~PA 245 from 18:30-19:15. Other sloshing activity occurs after this. --HH Also, there is a possible eruption at 20:50 at the North west limb. --arl and jp 4/19/98 98d109 NO DATA ARCHIVED CHIP: No apparent activity (td) 4/20/98 98d110 NO DATA ARCHIVED CHIP: No data for this day (td) 4/21/98 98d111 CME at PA: 295-300. Started around 17:46 UT as seen by observers. Confirmation of CME at PA: 300 from 17:52-19:54 UT. Second CME at PA: 90-150 from 19:51-20:40 UT. (djs) CHIP data shows two EPLs in NW. The first on occurs at ~PA 320 from time 16:40-17:30, and the second larger one occurs at ~PA 285-305 from time 17:40-19:15ish. -HH CHIP does not show the east limb CME. --arl 4/22/98 98d112 NO DATA ARCHIVED CHIP: No apparent activity. (td) 4/23/98 98d113 No apparent coronal activity. CHIP: Faint shock wave emanating from active region on southern disk. Begins around 19:23. (td) 4/24/98 98d114 No apparent coronal activity. CHIP: No apparent activity. (td) 4/25/98 98d115 NO MK3 DATA ARCHIVED An event is visible in the CHIP data on the east limb at ~PA 90. Material is seen spraying up and possibly erupting from ~18:30 to 19:45. --hh 4/26/98 98d116 CHIP: No apparent activity. (td) No apparent coronal activity. 4/27/98 98d117 CHIP: Faint shock wave moving NE from large active region on disk. Acitivity begins ~17:13. (td) 4/28/98 98d118 Large active region in SE shows a spurting and dropping of material in CHIP. It is difficult to tell if it is erupting. --hh 4/29/98 98d119 CHIP- A shock wave is visible, starting from the large active region and moving NW. This activity begins at ~18:00. LASCO-195 images show a huge CME originating in this active region starting at ~16:00. CME is also visible in LASCO-c2 and c3 data (as a halo). --hh 4/30/98 98d120 CHIP- No data for this day. (td) 5/01/98 98d121 No apparent coronal activity. --arl 5/02/98 98d122 LASCO-195 images record a huge CME beginning at 13:42. There is further activity from the same active region in MLSO time frame, with a tiny CHIP filament eruption at about 21:00 -- which shows up as a tiny CME in the LASCO-c2 data at about 21:40 -- Filament is ~20S,30W, CME ~240PA. The event is not visible in the MK3 data. --arl The event is not particularly noticeable in the PICS data. --arl The event is noticeable in the CHIP data. --arl 5/03/98 98d123 No apparent coronal activity. --arl 5/04/98 98d124 No data. 5/05/98 98d125 No data. 5/06/98 98d126 There is some reconfiguation going on on the North West limb. This may be due to a CME earlier in the day. There is no clearcut CME during the MK3 time frame. CHIP and PICS shows an active region "bubbling" on the NW disk. -arl 5/07/98 98d127 No apparent coronal activity. --arl 5/08/98 98d128 No data. 5/09/98 98d129 No apparent coronal activity. --arl 5/10/98 98d130 No apparent coronal activity. --arl 5/11/98 98d131 No apparent coronal activity. --arl 5/12/98 98d132 No apparent coronal activity. --arl 5/13/98 98d133 No mk3 data. 5/14/98 98d134 No mk3 data. 5/15/98 98d135 No apparent coronal activity in very ratty data. --arl CHIP sees an eruption on the West limb (~PA 265) beginning at 18:20. This is before the mk3 data begins. 5/16/98 98d136 No mk3 data. 5/17/98 98d137 No mk3 data. 5/18/98 98d138 No apparent coronal activity in very ratty data. --arl 5/19/98 98d139 No apparent coronal activity in very ratty data. --arl 5/20/98 98d140 No apparent coronal activity in very ratty data. --arl 5/21/98 98d141 No apparent coronal activity. --arl 5/22/98 98d142 No apparent coronal activity. --arl 5/23/98 98d143 No MK3 data. 5/24/98 98d144 No apparent coronal activity. --arl 5/25/98 98d145 No apparent coronal activity. --arl 5/26/98 98d146 No apparent coronal activity. --arl 5/27/98 98d147 No MK3 data. 5/28/98 98d148 No MK3 data. CHIP sees activity on the NW limb (~280 PA) and an eruption in this area at ~19:00-19:20. --hh Lasco c2 shows this area to be very active, with a CME earlier in the day too. Lasco c2 also shows the CME from the eruptive area, but not until 20:00ut, and it looks more like a "jet" than a classical CME -- although it does have a bit of a bubble and a front. --arl 5/29/98 98d149 No MK3 data. 5/30/98 98d150 CME in mk3 data as observing begins. Front loop is just leaving mk3 FOV at 16_59. It is located ESE 85 to 130 degrees PA. It "lasts" until 18:12. It is not obvious in the CHIP or H-alpha raw data. --arl 5/31/98 98d151 No apparent coronal activity, although LASCO c2 sees some very bizzarre "spreading" of the corona in the SE during the mk3 observing time. Looking at the mk3 data, this is probably rotation. -- arl 6/01/98 98d152 No MK3 data. 6/02/98 98d153 No MK3 data. CHIP sees a large eruptive prominence on the NE limb at ~PA 55-70. The eruption begins at ~18:30, lasting through the observing day. All material has erupted by 22:07. -hh lasco c2 sees some coronal changes in the area at 21:06. The chromospheric material(?)/ CME is not visible until 22:04 --arl Lasco c2 sees huge CME in SW around 12UT. Embedded in it is prominence material from the huge polar filament/porminence visible in both CHIP and PICS from previous days. (The prominence is notably absent in todays data.) This is the famous 2 sun grazing comet CME in LASCO c2. --arl 6/03/98 98d154 No MK3 data. 6/04/98 98d155 No MK3 data. 6/05/98 98d156 No apparent coronal activity. LASCO c2 shows none during mk3 timeframe. --arl 6/06/98 98d157 No apparent coronal activity. -Although LASCO c2 shows subtle possible CME in the N.E at around 17:00. -arl 6/07/98 98d158 No apparent coronal activity. LASCO CME shows coronal activity in NW -- can't tell what it is in the noisy mk3 data. --arl 6/08/98 98d159 No apparent coronal activity. --arl 6/09/98 98d160 No apparent coronal activity in a very short observing day. --arl 6/10/98 98d161 No apparent coronal activity. Lasco c2 looks like there is a CME around 21:00 -- but a data gap make this indeterminant. --arl 6/11/98 98d162 No apparent coronal activity. Lasco c2 saw 2 huge cme's on the east limb earlier in the day. You can see the residual cme "legs" in the mk3 data. --arl 6/12/98 98d163 No apparent coronal activity. --arl 6/13/98 98d164 No apparent coronal activity. --arl 6/14/98 98d165 No apparent coronal activity. --arl 6/15/98 98d166 CME at PA 130 beginning as observations start, 16:43, and lasting until ~18:11 when it leaves the FOV. Both CHIP and PICS see an erupting prominence. There is also a simultaneous CME at the south pole. It is a bit dim, but very obvious in LASCO c2. --arl Observers report: **** EVENT COMMENT ****: Mon Jun 15 16:56:49 GMT 1998 Possible EPL at PA 107-121, RV 1.2. There is also a cavity visible in a broad streamer over the prominence that may have a moving shock front. **** EVENT COMMENT ****: Mon Jun 15 17:07:14 GMT 1998 Prominence at PA 107-121 is erupting, cavity in streamer is expanding. **** EVENT COMMENT ****: Mon Jun 15 18:14:33 GMT 1998 EPL at PA 107-121 just about finished, just a small remnant visible on limb. **** EVENT COMMENT ****: Mon Jun 15 18:23:33 GMT 1998 EPL completely faded from PICS image now. 6/16/98 98d167 Observers report: **** EVENT COMMENT ****: Tue Jun 16 18:31:59 GMT 1998 CME at approximate PA 240-260 beginning around 1800 UT. There was a large prominence that was underlying the region that is now gone. Alice first caught the event from Boulder. What a team! **** EVENT COMMENT ****: Tue Jun 16 18:56:38 GMT 1998 I am also noticing that the streamer at PA 305-330 seems to be moving poleward--or the coronal hole south of the streamer is expanding. This is based on xanim image queue 1827-1853 UT. Tue Jun 16 19:01:21 GMT 1998 PICS Flat **** EVENT COMMENT ****: Tue Jun 16 19:01:39 GMT 1998 The coronal hole must be expanding as the small streamer on the other side of it at PA 285-300 appears to be moving toward the south. Turns out the CME is just huge, extending from 240 to about 330 degrees PA, this is why it looks like the streamer moves poleward, that streamer is really a "leg" of the CME. Lasco/yohkoh also sees the CME, and in the lasco images, the full extent of the CME is very obvious. The coronal dome sits forever statically above the prominence, but then starts to move at 18:00. The prominence material is out of the mk3 fov by 18:50. Extent of the CME is PA 240 to 330 (approximate) with the prominence located at PA 248 (approximate). --arl 6/17/98 98d168 No MK3 data. 6/18/98 98d169 No coronal activity observable in noisy data. --arl 6/19/98 98d170 No coronal activity observable in noisy data. --arl Lasco c2 sees halo cme around 20:00 UT. 6/20/98 98d171 No coronal activity. --arl Lasco c2 sees a cme in the NE around 20:00 UT. mk3 does not see it. 6/21/98 98d172 No MK3 data. Very active huge prominence in NW in both CHIP and PICS. Lasco c2 records coronal swelling in the area, with a final CME early the next day. (doy 173) 6/22/98 98d173 No MK3 data. 6/23/98 98d174 No MK3 data. 6/24/98 98d175 No MK3 data. 6/25/98 98d176 No MK3 data. 6/26/98 98d177 No data taken at MLSO today. 6/27/98 98d178 No MK3 data. 6/28/98 98d179 No coronal activity noted. --arl 6/29/98 98d180 No coronal activity noted. There is some interesting subtle reconfigutation in the NE around 16:40-17:30. This may be re-organization of the corona post CME --? --arl CHIP shows some interesting activity in the NW at 19:55 that might be an ejection of material. However, MK3 doesn't show anything, although the mk3 images get pretty ratty at 2020. --arl 6/30/98 98d181 No data taken at MLSO today. 7/01/98 98d182 All mk3 images were ugly. 7/02/98 98d183 No coronal activity noted. --arl 7/03/98 98d184 MK3 data from 16_40 to 22_12 No coronal activity noted. --arl CHIP sees possible EPL at 45 degrees PA, 19:38-20:31 UT. --arl 7/04/98 98d185 MK3 data from 17_08 to 21_17 No coronal activity noted. --arl 7/05/98 98d186 MK3 data from 16_58 to 21_43 No coronal activity noted. --arl 7/06/98 98d187 MK3 data from 16_36 to 22_00. CME at PA 275, 19:00 to 19:30 UT. No noteable disk activity in the region, possible "back side" event. --arl 7/07/98 98d188 No data taken at MLSO today. 7/08/98 98d189 MK3 data from 17_07 to 22_26 No coronal activity noted. --arl 7/09/98 98d190 MK3 data from 16_54 to 22_36 No coronal activity noted. --arl 7/10/98 98d191 MK3 data from 16_48 to 22_06 No coronal activity noted. --arl 7/11/98 98d192 MK3 data from 16_57 to 21_59 Small CME PA 272, seen in mk3 data from 18:28 until 18:58 --arl CHIP: three surges, or possible eruptions, are visible in the active region near the limb in the west. One of these surges is at 18:12-19:10, which may correspond to the small CME. 7/12/98 98d193 MK3 data from 16_55 to 21_54 No coronal activity noted. --arl 7/13/98 98d194 MK3 data from 16_33 to 22_10. No coronal activity noted. --arl CHIP: A surge of material is visible on the disk in the south. The surge begins at ~18:30, moves south, and ends at ~19:30. --hh 7/14/98 98d195 No data taken at MLSO today. 7/15/98 98d196 MK3 data from 17_00 to 21_04 No coronal activity noted. --arl 7/16/98 98d197 No data taken at MLSO today. CHIP: A small active prominence (possibly eruptive) is visible on the west limb at ~PA 295. --hh 7/17/98 98d198 MK3 data from 16_25 to 22_18 No coronal activity noted. --arl 7/18/98 98d199 MK3 data from 17_03 to 22_17 CME east limb. Miss the beginning of the event which is already started in the first image of the day at 17:03. It leaves the FOV about 17:25 UT Very rough speed estimate is 1Rsun in 20 minutes or ~580km/sec. CHIP: activity on the east limb is already in progress in first image. Material is falling back to the limb until ~17:45. --hh The CHIP activity is just north and south of the equator, as is the CME in mk3 data, but more angularly extended. --arl 7/19/98 98d200 MK3 data from 16_47 to 22_41 No coronal activity noted. --arl Data is in the "poordata" directory because of a dark region in the NNW. Possible smoke from South America? --arl CHIP: a prominence rises and falls back to the limb in the SE at time 21:20~21:55. --hh 7/20/98 98d201 No data taken at MLSO today. 7/21/98 98d202 MK3 data from 16_36 to 17_25 No coronal activity noted on this very short day. --arl Data is in the "poordata" directory because of a dark region in the NNW. Possible smoke from South America? --arl 7/22/98 98d203 MK3 data from 20_09 to 22_03 No coronal activity noted. --arl Data is in the "poordata" directory because of a dark region in the NNW. Possible smoke from South America? --arl 7/23/98 98d204 MK3 data from 17_02 to 23_14 No coronal activity noted. There is a lovely example of nested coronal loops at PA 110. It remains stable all day, but would be a good site for a future CME. Data is in the "poordata" directory because of a dark region in the NNW. Possible smoke from South America? --arl --arl 7/24/98 98d205 MK3 data from 16_38 to 22_01 VERY faint, possible CME, at PA 225, at 16:53. There is definite coronal movement. (Earlier mk3 images are tainted by mispointing, the mk3 image at 16:50 is looking at the dome in the exact location of the activity.) CHIP shows a dissappearing filament in the SW polar region about the same time. --arl 7/25/98 98d206 MK3 data from 17_11 to 20_46 No coronal activity noted. --arl 7/26/98 98d207 MK3 data from 17_09 to 20_20 CME, PA ~110, in mk3 FOV from 18:55ut until 19:30ut. Angular extent is farily small, 30 degrees? Fairly difficult to see in mk3 data. --arl 7/27/98 98d208 MK3 data from 16_30 to 22_00 No coronal activity noted. --arl 7/28/98 98d209 No data taken at MLSO today. 7/29/98 98d210 MK3 data from 17_11 to 22_12 No coronal activity noted. --arl 7/30/98 98d211 MK3 data from 17_10 to 22_13 No coronal activity noted. --arl 7/31/98 98d212 MK3 data from 16_37 to 22_12 There may be some motion of the corona at PA 300 at 17_23, very subtle. No other coronal activity noted. --arl 8/01/98 98d213 No MK3 data. 8/02/98 98d214 No data taken at MLSO today. 8/03/98 98d215 MK3 data from 16_33 to 22_03 8/04/98 98d216 No data taken at MLSO today. 8/05/98 98d217 MK3 data from 17_06 to 22_11 MK3 observed a CME at PA 75-80 degrees beginning at 17:50 Width is fairly narrow, ~30 degrees. Velocity is difficult to check, perhaps 670 km/sec CHIP data shows a wee prominance growing in the area beginning at 17:48. It is gone by 18:03. --arl 8/06/98 98d218 MK3 data from 17_14 to 22_05 End of CME in first images of the day ??? Call this an ANOMOLY - not a CME (JB) NO LASCO data. East limb, PA ~85 degrees. First two images, 17:14 and 17:17 are misspointed, so it is very difficult to make out exactly what is occuring. --arl Alice is right that this is difficult to make out and it may be the very end of a CME but its not clear so I'd call it an anomoly. (JB) CHIP shows an active prominance in the region too. It doesn't look like a classical eruption. --arl 8/07/98 98d219 MK3 data from 16_45 to 22_03 CME northwest limb, 17:55 to 18:40 ? , 270 to 320 degrees PA. Very dim. Nothing is in the area in the CHIP data. --arl Huge filament north central disk CHIP data -- is gone on doy 220. 8/08/98 98d220 MK3 data from 19_12 to 21_36 No obvious activity on a very noisy day. --arl Huge filament north central disk CHIP data on doy 219 -- is gone on doy 220. 8/09/98 98d221 MK3 data from 16_56 to 21_58 2-CME's Slow moving CME southwest limb, may begin before first image at 16:56 visible until 19:00, PA 220-240 degrees. CME east limb, very dim, 17:13 - 17:49, PA 55 to 105 degrees, perhaps larger in extent, ? very dim. CHIP shows a lot of activity in the eastern active region, including a surge from ~17:45 to ~18:20 near the limb. --hh 8/10/98 98d222 MK3 data from 19_22 to 22_14 No obvious activity on a very short and noisy day. --arl CHIP: still very active in the east. Some activity can also be seen in the south. A prominence on the NW limb begins to lift up at the very end of the day. --hh 8/11/98 98d223 No data taken at MLSO today. 8/12/98 98d224 MK3 data from 17_06 to 21_56 CME in mk3 FOV from 19:29 to 20:40 at PA 70, width 15 degrees(?). Difficult to detect, seems to have an equatorward trajectory. CHIP sees nothing obvious in the east that would correspond to the above mentioned CME. --hh 8/13/98 98d225 MK3 data from 16_54 to 22_14 Observers note: **** EVENT COMMENT ****: Thu Aug 13 18:23:10 GMT 1998 Faint CME in progress at PA=240 from about 1800 ut on. Alice notes: CME is in mk3 f.o.v. 17:56 to perhaps 18:20 (skies get quite noisy at 18:20) PA approximately 240 degrees, width approximately 25 degrees. --arl 8/14/98 98d226 MK3 data from 16_41 to 22_18 No coronal activity seen. --arl 8/15/98 98d227 MK3 data from 16_54 to 22_13 **** EVENT COMMENT ****: Sat Aug 15 18:37:04 GMT 1998 Nice CME in progress at PA=75. Front of loop of CME in in mk3 fov from 18:10 to 18:42. Speed of loop is near 480 km/sec At 18:10 angular extent is from 43 to 94 degrees PA. At 18:03 angular extent is from 33(???) to 104 degrees PA. Very similar to CME on DOY 228 below, except not as well defined. 8/16/98 98d228 MK3 data from 16_53 to 21_37 **** EVENT COMMENT ****: Sun Aug 16 17:47:35 GMT 1998 Nice CME in progress at PA=60, started around 1730 ut. **** EVENT COMMENT ****: Sun Aug 16 18:18:17 GMT 1998 That was a huge CME, and it sure affected that pointed streamer in the East. Front loop of CME is in mk3 fov from 17:37 to 17:57. Speed of loop is near 770 km/sec At 17:40 angular extent is from 45 to 75 degrees PA. At 18:03 angular extent is from 30 to 104 degrees PA. There appears to be quite a bit of material flowing along the southern leg, seen in mk3 FOV beginning at 18:00 until 18:47. --arl CHIP seems to show an erupting prominence, beginning at 1700ut, at approximately 130 degrees PA. --arl 8/17/98 98d229 MK3 data from 16_39 to 22_20 **** EVENT COMMENT ****: Mon Aug 17 18:50:57 GMT 1998 CME at PA 30-50 from around 1822 UT. **** EVENT COMMENT ****: Mon Aug 17 19:44:45 GMT 1998 cme at 30-50 was over by around 1900 UT. **** EVENT COMMENT ****: Mon Aug 17 21:39:39 GMT 1998 Region at PA 30-50 took off again from 2113UT. Nice, classic, expanding bubble. Orographic clouds came in fairly heavily at 2124 UT. First CME is in the mk3 fov from 18:16 to 18:43 at PA 45 degrees, fairly narrow width, from 35 to 55 degrees PA. Speed estimate not possible. Second CME occurs at a time when patches of clouds were passing by the observatory. So details may be incorrect. CME is in mk3 fov from 21:16 to 21:30 at PA 46 degrees. Width at 21:21 extends from 34 to 59 degrees PA. Width at 21:30 extends from 30 to 66 degrees PA. Speed is difficult to check, seems fast, 800 km/sec. --arl CHIP shows the area constantly "sputtering" through out the entire day. Very unusual looking... --arl 8/18/98 98d230 No data taken at MLSO today. 8/19/98 98d231 MK3 data from 16_51 to 22_51 **** EVENT COMMENT ****: Wed Aug 19 22:01:18 GMT 1998 A large, fast CME is in progress at PA=50. It started around 2140 ut. There is also an associated flare and loops visible at that active region AR 8307 I believe. I am sending out an alert message. CME is seen in mk3 FOV from 21:41 to 21:50 at PA 53 degrees. Width at 21:44 extends from 37 to 75 degrees PA. Width at 21:50 extends from 30 to 75 degrees PA. Speed estimate, fast, >1200km/sec. --arl CHIP shows rapid motions in the area beginning at 21:39ut. There is a Morton wave emanating from the region, first seen at 21:54ut. --arl 8/20/98 98d232 MK3 data from 16_52 to 22_06 **** EVENT COMMENT ****: Thu Aug 20 17:37:02 GMT 1998 CME in progress at PA=110. CME has already begun in 1st image of the day at 16:52ut CME is at PA 105 degrees, width 92 to 128 degrees PA. CME is in mk3 fov until 20:00 ut. Since mlso misses the initiation of the CME, speed estimate is not possible, but since the inner loop can be observed from 16:52-17:45 it must be fairly slow moving, perhaps 300 km/sec or less. --arl CHIP shows a prominence eruption in the area beginning at 17:05ut --arl 8/21/98 98d233 MK3 data from 16_44 to 20_29 No coronal activity seen. --arl 8/22/98 98d234 MK3 data from 17_04 to 19_21 No coronal activity seen in a very short day. --arl 8/23/98 98d235 No MK3 data. 8/24/98 98d236 MK3 data from 16_51 to 23_54 CHIP and PICS show a large flare from the active region in the mid-center, NE side of the disk, beginning 21ut (ish). mk3 shows no coronal activity, but since it is limited to +- 30 degrees from the limb, this is not surprising. --arl 8/25/98 98d237 MK3 data from 16_40 to 21_11 No coronal activity seen. --arl 8/26/98 98d238 MK3 data from 16_58 to 22_12 No coronal activity seen. --arl 8/27/98 98d239 MK3 data from 17_00 to 23_01 No coronal activity seen. --arl 8/28/98 98d240 **** EVENT COMMENT ****: Fri Aug 28 17:41:11 GMT 1998 CME detected at PA 140-155, from around 1715 UT. CME, in mk3 fov from 17:12 to 17:27, PA 136 degrees, width 120 to 150 degrees PA. It is very dim, speed estimate not possible. CHIP may show some activity in an active region on the disk near the same area. When the complete data shows up, we can verify. --arl CHIP does show activity in this area- a burst near the limb, possibly eruptive. This activity starts at ~18:00, lasting until ~19:40. The burst seems centered around PA 135, but spreads out in all directions. -hh 8/29/98 98d241 CME, very dim, first seen in mk3 fov at 18:36 at PA 246. It is in the mk3 fov until 18:56? 19:00? difficult to tell, as it is very dim. --arl No activity is seen in the area in the CHP data. --arl I'd call this an anomaly (JB) 8/30/98 98d242 MK3 data from 16_57 to 21_06 CME, first seen in mk3 fov at 17:15 at PA 306 degrees. It is in the mk3 fov until 18:29? it fades a bit with time. Width 292 to 320 degrees PA. There is embeded prominence material, which is also seen in the CHIP data. 8/31/98 98d243 MK3 data from 16_45 to 22_03 No coronal activity seen. --arl Both CHIP and PICS confirm eruptive filimant in Active Region at 23N40W beginning 18:21 -- probable CME. --arl 9/01/98 98d244 MK3 data from 16_37 to 22_08 No coronal activity seen. --arl Possible Eruptive Filament seen in PICS data, 18N,33E, beginning 17:43 or earlier. --arl Eruptive filament also seen in CHIP. -hh 9/02/98 98d245 No data taken at MLSO today. 9/03/98 98d246 MK3 data from 16_50 to 21_33 No coronal activity seen. --arl 9/04/98 98d247 MK3 data from 16_46 to 22_04 **** EVENT COMMENT ****: Fri Sep 4 19:07:47 GMT 1998 Subtle CME at PA 310-320 between 1841-1904 UT. **** EVENT COMMENT ****: Fri Sep 4 19:19:10 GMT 1998 Small, brief limbflare appeared at around 1910 UT at PA 293. Width of cme is 304-323 degrees PA. It may already be out of the mk3 fov by 18:56ut. Speed estimate, 800km/sec. --arl 9/05/98 98d248 MK3 data from 16_58 to 22_23 No coronal activity seen. --arl WILD activity seen in PICS, beginning in AR at 25S,28W at 17:26, that extends eastward and causes possible filament eruption at 48S,22E at 18:32ut. --arl 9/06/98 98d249 MK3 data from 16_52 to 21_48 No coronal activity seen. --arl 9/07/98 98d250 No data taken at MLSO today. 9/08/98 98d251 MK3 data from 16_46 to 21_52 No coronal activity seen. --arl 9/09/98 98d252 MK3 data from 17_06 to 20_29 No coronal activity seen in data marred by thin, high cirrus. --arl 9/10/98 98d253 No data taken at MLSO today. 9/11/98 98d254 MK3 data from 16_46 to 22_06 Faint,fast CME on west limb, first seen in mk3 FOV, 18:05 UT, until ~18:21 , PA 265. --arl 9/12/98 98d255 MK3 data from 16_59 to 22_12 No coronal activity seen. --arl 9/13/98 98d256 MK3 data from 17_05 to 22_04 No coronal activity seen. --arl 9/14/98 98d257 MK3 data from 16_44 to 22_09 No coronal activity seen. --arl 9/15/98 98d258 MK3 data from 16_45 to 21_23 No coronal activity seen. --arl 9/16/98 98d259 MK3 data from 17_50 to 22_11 No coronal activity seen. --arl 9/17/98 98d260 MK3 data from 16_45 to 22_07 No coronal activity seen. --arl 9/18/98 98d261 MK3 data from 16_46 to 22_11 No coronal activity seen. --arl 9/19/98 98d262 MK3 data from 17_30 to 22_07 No coronal activity seen on a very noisy day. --arl 9/20/98 98d263 MK3 data from 17_29 to 19_30 No coronal activity seen on a very short day. --arl 9/21/98 98d264 No MK3 data. 9/22/98 98d265 MK3 data from 16_43 to 22_02 Large prominence can be seen on the east limb in the mk3 data. No coronal activity seen. --arl 9/23/98 98d266 MK3 data from 18_25 to 20_43 There are interesting symetrical streamers on the western limb surrounding a very bright loopy area. No coronal activity seen on a very short day. --arl 9/24/98 98d267 MK3 data from 16_44 to 22_03 There are interesting symetrical streamers on the western limb surrounding a very bright loopy area. No coronal activity seen. --arl 9/25/98 98d268 MK3 data from 16_40 to 22_06 The symetrical streamers on the western limb surrounding a very bright loopy area are still there. No coronal activity seen. --arl 9/26/98 98d269 No MK3 data. 9/27/98 98d270 MK3 data from 17_10 to 22_30 No coronal activity seen. --arl CHIP data shows possible Morton wave ~10N60W at 21:00, -- will have more details when the complete data comes in. **After looking at the data carefully, a distinct Morton wave is NOT visible. However, there is quite a bit of continuous activity in the above mentioned area. -hh 9/28/98 98d271 *** EVENT COMMENT ****: Mon Sep 28 19:29:39 GMT 1998 Possible epl at PA 240-250, RV 1.25 CHIP shows there is an EPL, or at least a very large active prominence that has material moving far above the limb. -hh MK3 data from 18_59 to 21_05 CME barely visible through cirrus, 19:07-19:40, PA 226 degrees. --arl I can't see it in noisy data. I'd call this an anomaly (JB) NO LASCO DATA. 9/29/98 98d272 MK3 data from 16_42 to 22_07 No coronal activity seen. --arl 9/30/98 98d273 MK3 data from 17_10 to 22_24 No coronal activity seen. --arl 10/01/98 98d274 MK3 data from 16_42 to 21_36 No coronal activity seen on a very noisy day. --arl 10/02/98 98d275 MK3 data from 16_43 to 22_03 No coronal activity seen on a very noisy day. --arl 10/03/98 98d276 MK3 data from 17_16 to 21_43 No coronal activity seen. --arl 10/04/98 98d277 No MK3 data. 10/05/98 98d278 MK3 data from 17_13 to 22_18 No coronal activity seen. --arl 10/06/98 98d279 MK3 data from 16_47 to 22_08 No coronal activity seen. --arl 10/07/98 98d280 MK3 data from 17_47 to 21_50 CME in progress as first MK3 image is taken at 17:47, PA 125. Lasting until ~ 18:31 Narrow width, 119 to 130 degrees PA. NO LASCO DATA. 10/08/98 98d281 No MK3 data. 10/09/98 98d282 MK3 data from 16_45 to 22_04 2 CMEs on this day. First one -- all one can see is a huge prominence eruption. There is no classic loop fron at all. It begins at 18:46 at PA 51 and is in the mk3 fov until 19:30. This gives an estimated speed for the prominence material of 342km/sec. Second is hard to see in the late day noise. It begins at 21:06 at PA 99. It is in the mk3 fov until 21:26 (?) very hard to see in the late day noise. Speed estimate 513 km/sec. --arl 10/10/98 98d283 MK3 data from 17_10 to 21_13 POSSIBLE CME -- COULD just be solar rotation??? at PA 111 is in progress as day begins at 17:10. Very slow, activity continues through the entire day. Width 91 to 136 degrees PA. --arl 10/11/98 98d284 MK3 data from 17_09 to 19_16 No coronal activity seen on a very short observing day. --arl 10/12/98 98d285 MK3 data from 16_44 to 21_05 No coronal activity seen. --arl 10/13/98 98d286 MK3 data from 16_51 to 19_21 No coronal activity seen. --arl 10/14/98 98d287 MK3 data from 17_05 to 21_49 No coronal activity seen. --td 10/15/98 98d288 No MK3 data. 10/16/98 98d289 MK3 data from 17_00 to 20_43 No apparent coronal activity. --td. 10/17/98 98d290 MK3 data from 17_04 to 19_52 Exceedingly faint CME at PA 220. Appears as a very faint widening of the streamer at that location. Appears around 17:33 and lasts until 18:27. No other activity found. (td) It is more like an openning of a loop where one can only see one leg. There is a streamer that moves northward and then dissapates. This is very likely coronal activity, not just rotation, but it is hard to see what it exactly is... --arl 10/18/98 98d291 No MK3 data. 10/19/98 98d292 No MK3 data. 10/20/98 98d293 No data taken at MLSO today. 10/21/98 98d294 MK3 data from 19_37 to 21_23 Data for this day looks like a bunch of darks. Work was being done installing the MK4 instrument. --td 10/22/98 98d295 MK3 data from 01_16 to 01_19 Data for this day looks like a bunch of darks. Work was being done installing the MK4 instrument. --td 10/23/98 98d296 No MK3 data. 10/24/98 98d297 MK3 data from 17_25 to 17_34 10/25/98 98d298 There is mk3 data on this day. 10/26/98 98d299 MK3 data from 00_38 to 21_52 MK3 data for this day is very noisy. I couldn't make out any significant coronal activity for this day. --td CHIP sees an Eruptive prominence at ~PA 320 from 17:05~18:05. -hg 10/27/98 98d300 MK3 data from 00_05 to 23_56 Data is again somewhat noisy so it is difficult to make out any details in the corona. No significant activity found. --td 10/28/98 98d301 MK3 data from 20_15 to 23_15 No apparent coronal activity in MK3. --td 10/29/98 98d302 MK3 data from 00_01 to 23_58 No apparent coronal activity. -td 10/30/98 98d303 MK3 data from 17_18 to 22_13 No apparent coronal activity. -arl 10/31/98 98d304 MK3 data from 16_50 to 22_15 No apparent coronal activity. -arl 11/01/98 98d305 MK3 data from 16_55 to 23_12 No apparent coronal activity. -td 11/02/98 98d306 MK3 data from 17_07 to 22_08 No apparent coronal activity. -td 11/03/98 98d307 MK3 data from 20_58 to 22_27 Short day for MK3 data. No apparent coronal activity. -td 11/04/98 98d308 MK3 data from 19_48 to 20_11 No apparent coronal activity. -td 11/05/98 98d309 No MK3 data. 11/06/98 98d310 No MK3 data. 11/07/98 98d311 No MK3 data. 11/08/98 98d312 No data taken at MLSO today. 11/09/98 98d313 MK3 data from 17_38 to 20_20 Very faint CME at PA 320 visible starting 19:08 through the end of data for the day (20:04). Data noise at end of day makes seeing any real detail difficult. (td) CHIP sees a large erupting prominence around PA 300-315 at time 18:20 ~ 20:20. -hg 11/10/98 98d314 No MK3 data. 11/11/98 98d315 No MK3 data. 11/12/98 98d316 MK3 data from 16_57 to 22_02 No apparent coronal activity (td) 11/13/98 98d317 MK3 data from 17_08 to 22_03 No apparent coronal activity (td) 11/14/98 98d318 MK3 data from 17_02 to 23_13 No apparent coronal activity (td) 11/15/98 98d319 MK3 data from 17_13 to 21_04 No apparent coronal activity (td) 11/16/98 98d320 MK3 data from 17_09 to 22_03 No apparent coronal activity (td) 11/17/98 98d321 MK3 data from 17_37 to 21_52 No apparent coronal activity (td) 11/18/98 98d322 No MK3 data. 11/19/98 98d323 No MK3 data. 11/20/98 98d324 No MK3 data. 11/21/98 98d325 No MK3 data. 11/22/98 98d326 No MK3 data. 11/23/98 98d327 No MK3 data. 11/24/98 98d328 MK3 data from 17_23 to 22_05 No apparent coronal activity (td) 11/25/98 98d329 MK3 data from 17_12 to 23_00 No apparent coronal activity (td) 11/26/98 98d330 MK3 data from 16_59 to 22_01 No apparent coronal activity (td) 11/27/98 98d331 MK3 data from 17_38 to 22_12 No apparent coronal activity (td) 11/28/98 98d332 MK3 data from 17_17 to 23_03 Data drop out in MK3 from 19:24-21:17. No visible coronal signal in images during this time period. (td) No apparent coronal activity (td) 11/29/98 98d333 MK3 data from 17_16 to 22_12 No apparent coronal activity. (td) 11/30/98 98d334 No MK3 data. 12/01/98 98d335 MK3 data from 17_12 to 22_08 No apparent coronal activity (td) 12/02/98 98d336 No MK3 data. 12/03/98 98d337 MK3 data from 20_42 to 20_58 Only a few images for this day with no coronal signal (td) 12/04/98 98d338 MK3 data from 17_45 to 18_14 No coronal signal visible in the few images for this day. Bad weather (td) 12/05/98 98d339 No MK3 data. 12/06/98 98d340 No MK3 data. 12/07/98 98d341 No MK3 data. 12/08/98 98d342 No MK3 data. 12/09/98 98d343 No MK3 data. 12/09/98 98d343 No MK3 data. 12/10/98 98d344 No MK3 data. 12/11/98 98d345 MK3 data from 17_36 to 22_05 No apparent coronal activity. (td) 12/12/98 98d346 MK3 data from 17_31 to 23_05 No apparent coronal activity. (td) 12/13/98 98d347 MK3 data from 17_24 to 23_04 Polarization noise at ~280 PA between ~18:51-19:04. Not a CME. No CME seen in LASCO. (JB) 12/14/98 98d348 MK3 data from 17_32 to 22_07 No apparent coronal activity. (td) 12/15/98 98d349 MK3 data from 18_15 to 22_03 No apparent coronal activity. (td) 12/16/98 98d350 MK3 data from 17_25 to 22_18 No apparent coronal activity. (td) 12/17/98 98d351 MK3 data from 17_28 to 19_47 CME visible from 18:03 through the last image of the day (about 18:23). Data quality was poor after this time. CME only visible in a few frames and still in FOV when data become unusable. CME is visible and nice in LASCO C2. PA: 260; Width: 20 degrees. (td/jb) 12/18/98 98d352 MK3 data from 17_23 to 21_33 CME in progress when observations begin. Located at approximately 50 degrees position angle. First 3 MK3 images are ugly. Loop/cavity seen near the edge of the field of view in first good image (17:33). Top of loop gone in next image at 17:36. CME visible in LASCO data. EIT records a new arcade in Fe12 in same location as the two ribbon flare in the Mauna Loa data. (jb) PICS sees a nice two-ribbon flare in the NE from ~17:29-19:19. (hg) 12/19/98 98d353 MK3 data from 17_21 to 22_22 2 CMEs this day. There is a CME in progress at start of observing day. Filament material is visible at this time to be about 1.8 solar radii. The material can be followed in MK3 until 18:07. The width of the event is estimated to be 15 degrees and filament material seems to follow a radial track outward at PA 224. (td) 2nd CME in NE at ~45 deg. PA from ~20:13 to ~22:00. May be a 3-part CME. Front appears to be forming in FOV but movie is saturated at low heights. Mediocre to poor time height at best. (jb) PICS data shows a large EPL at PA 210-240. Event is already in progress at beginning of day. Large quantities of material can be seen draining down. (td) LASCO C2 and C3 both show the expansion of the filament material and frontal loop. Hard to distinguish the cavity feature in C3. (td) 12/20/98 98d354 MK3 data from 17_19 to 22_20 No apparent coronal activity. (td) 12/20/98 98d354 MK3 data from 17_19 to 22_20 No apparent coronal activity. (td) 12/21/98 98d355 MK3 data from 17_29 to 22_05 No apparent coronal activity. (td) 12/22/98 98d356 MK3 data from 17_35 to 17_39 No coronal data collected. Images appear as dark frames. (td) 12/23/98 98d357 No data taken at MLSO today. 12/24/98 98d358 No data taken at MLSO today. 12/25/98 98d359 No data taken at MLSO today. 12/26/98 98d360 No data taken at MLSO today. 12/27/98 98d361 No data taken at MLSO today. 12/28/98 98d362 No data taken at MLSO today. 12/29/98 98d363 MK3 data from 17_28 to 22_09 No apparent coronal activity. (td) 12/30/98 98d364 MK3 data from 17_40 to 23_08 No apparent coronal activity. (td) 12/31/98 98d365 No data taken at MLSO today.