Solar Activity Reports May 1999


BBSO Solar Activity Report 01-MAY-1999 19:32:22 UT
NOAA 8523, N32W36. Alpha magnetic class. A couple of small spots.

NOAA 8524, N21W40. Beta-gamma-delta magnetic class. A weak delta is still present in the trailing spots. The delta does not look as strong as several days ago when last seen at BBSO due to weather. Weak arch filaments are present in the leading spots. See hi-res hacl images. C-class x-ray events expected and an isolated M-class possible.

NOAA 8525, N17E54. Beta magnetic class. Very large spread out bipolar region. Very little mixing. C-class x-ray events.

NOAA 8527, N26E60. Alpha magnetic class. Couple of small spots.

NOAA ?, S14E70. Alpha magnetic class. Small region east limb.

RF

BBSO Solar Activity Report 02-MAY-1999 15:34:38 UT
NOAA 8524, N21W50. Beta-gamma-delta. Delta configuration continues to decay. Overall the region has decayed from yesterday. No arch filaments seen today. C-class x-ray events expected and maybe an isolated M-class x-ray event.

NOAA 8525, N17E42. Beta region. A very large spread out bipolar region. Alittle more mixing of polarities today and is brighter in Ha near the trailing spots also. Overall the region has decayed slightly from yesterday. C-class x-ray events expected.

NOAA 8527, N22E48. Alpha region. Small leading spot north of NOAA 8525.

NOAA 8528, S18E62. Beta region. A couple of small spots.

NOAA ?, N18E04. Alpha region. Single leading spot.

NOAA ?, S17E16. Beta region. A couple of small spots.

NOAA ?, N11E64. Alpha region. A tiny spot trailing NOAA 8525.

RF

BBSO Solar Activity Report 03-MAY-1999 15:23:09 UT
No observations......temp in the 50s, mostly cloudy with a 70% chance of drizzle or light rain.

WM

BBSO Solar Activity Report 04-MAY-1999 17:44:51 UT
Sunny, moderate west wind, temp. in the mid-50s.

NOAA 8524, N21W80. Large plage on the NW limb. C-class events possible.

NOAA 8525, N17E15. Very large plage. Stable round leader sunspot, but mixed polarities in the trailing portion gives 8525 its beta-gamma magnetic class. Large filament located on the region's magnetic neutral line is currently active. 8525 produced an M/4 on May 3rd. C-class events expected and another M-class event is possible. A tiny alpha spot is located just to the north of 8525 at N25E16.

NOAA 85__, N21W28. Small beta sunspot group.

NOAA 85__, S14W14. Small beta sunspot group.

NOAA 85__, N18E70. Small beta sunspot group.

WM

BBSO Solar Activity Report 05-MAY-1999 16:14:47 UT
Sunny, gentle west wind, temp. in the 60s...good seeing.

NOAA 8524, N21W90. Minor surging at this time.

NOAA 8525, N17E10. Stable round leader sunspot, numerous tiny trailer spots. Less polarity mixing in the trailing sunspots today. Isolated C-class events possible as well as an isolated low-level M-class event.

NOAA 8526, N21W41. Slowly growing beta sunspot group.

NOAA 8527, N26E05. Tiny plage with a single tiny leader sunspot.

NOAA 8529, S14W27. Small beta sunspot group.

NOAA 8531, N18E56. Small beta sunspot group.

NOAA 85__, S40W11. Tiny high latitude beta sunspot group.

NOAA 85__, S18E16. Weak plage with a few tiny sunspots.

NOAA 85__, S18E75. Small plage and spot at the SE limb.

NOAA 85__, N03E80. Very low latitude weak plage with a few small sunspots.

WM

BBSO Solar Activity Report 06-MAY-1999 16:55:13 UT
Sunny, gentle west wind, temperature in the mid-60s...excellent seeing.

NOAA 8525, N17W03 Very nice quiescent round leader sunspot. Sunspot group declining in spot count and spot area. C-class events possible with a possibility for an isolated low-level M-class event before west limb passage.

NOAA 8526, N20W54. Beta sunspot group with a new, separate beta group located just west of the trailing spots at N19W40. C-class event possible.

NOAA 8529, S14W44. Decay phase, single alpha spot.

NOAA 8531, N18E43. Tiny beta sunspot group.

NOAA 8533, N03E65. Beta sunspot group located very close to the equator.

NOAA 8534, S18E65. Small beta sunspot group with very weak H-alpha plage.

NOAA 85__, S26E55. EFR...beta magnetic class.

NOAA 85__, N22E73. Large stable sunspot...first seen on the limb yesterday afternoon.

WM

BBSO Solar Activity Report 07-MAY-1999 16:33:28 UT
Sunny and warm...temperature in the high-60s. Excellent seeing.

NOAA 8525, N17W27. Continues in decay phase, most of the small trailer spots are gone, but EFR directly south (N10W29) of 8525 and strong filaments help to keep this area on the sun interesting. C-class events and an isolated low-level M-class is possible before west limb passage. Both regions are beta magnetic class, at this time, but the new region shows signs of developing mixed polarities in the intermediate portion.

NOAA 8526, N20W67. Stable or slow decay. New separate region just to the east (N19W58) is growing. Both regions capable of C-class events. Both regions are beta magnetic class at this time.

NOAA 8531, N18E29. Decaying beta region.

NOAA 8533, N03E50. Low-latitude beta sunspot group.

NOAA 8534, S18E50. Single leader sunspot with very low intensity plage.

NOAA 85__, S25E42. Small beta sunspot group.

NOAA 85__, N22E61. Large stable leader sunspot.

NOAA 85__, N14E49. New beta-gamma sunspot group just south of the large sunspot at N22E61. C-class events expected.

NOAA 85__, S28E78. Small beta region with weak H-alpha plage.

NOAA 85__, N21E90. Small, but young bright plage in growth phase. Small bright surges have been observed at N21 yesterday and again today. NOAA/SEC reports that this region is the possible source of the most recent M-class event.

WM

BBSO Solar Activity Report 08-MAY-1999 16:15:05 UT
NOAA 8525, N16W40. Alpha region. Nice round stable leading spot nearing west limb. Region slowly decaying with trailing spots mostly gone. Round spot does not show any Wilson effect yet. Still nice strong filaments associated with this region. Region NOAA 8538 just to the north has not continued to develope. C-class and an outside chance of an isolated M-class.

NOAA 8531, N19E11. Beta region. A couple of small spots. Maybe two regions.

NOAA 8533, N04E35. Beta region. Very low latitude region.

NOAA 8534, S18E38. Alpha region. Single round spot with a couple of surrounding spots.

NOAA 8535, N21E47. Alpha region. Nice round large leading spot with same polarity satelite spot. Hints of some mixing along the trailing area of the large spot. C-class events.

NOAA 8536, S24E27. Beta region. Region has shown growth in sunspot area and complexity since yesterday. New flux has emerged in the intermediate area creating some mixing. C-class events.

NOAA 8537, N19W71. Beta region. This region has grown at a rapid rate since yesterday. Region now has large irregular leading and trailing spots but is to close to the limb to tell about mixing. Very bright in Ha. Site of M5 flare this morning at 14:00UT. See Ha hi res image for post flare loops in Hacl. Expect c-class and M-class as it rotates off the west limb.

NOAA 8538, N11W44. Beta region. Region has not continued to develope.

NOAA 8539, N13E32. Two spots of the same polarity. Some mixing near the trailing spot. C-class.

NOAA 8540, S28E60. Beta region.

NOAA 85--, N20E64. Beta region. Trailing spots are much larger than the leading spots. To close to the east limb to get a good idea of mixing of polarities. This region showed strong surging coming over the limb and maybe the site of M-class flares. Not as bright today in Hacl then yesterday. C-class events and M-class events continue.

RF

BBSO Solar Activity Report 09-MAY-1999 16:26:01 UT
NOAA 8525, N18W53. Beta region. Round stable leading spot nearing west limb. Some trailing spots have developed overnight. Round spot does not show the Wilson effect. The strong filaments associated with the trailing area are still present. C-class events with an outside chance of an M-class.

NOAA 8531, N19W01. Beta region. Spread out decaying region with only a couple of spots left.

NOAA 8533, N04E23. Beta region. Low latitude region. Slowly decaying.

NOAA 8534, S18E24. Beta region. Single round spot with a couple of small surrounding spots. Mostly leading polarity region.

NOAA 8535, N21E36. Alpha region. Large round stable leading spot with same polarity satelite spot. Some mixing trailing edge of spot. C-class events.

NOAA 8536, S24E15. Beta-gamma region. Scattered small spots. Region continues to grow in sunspot area and complexity. Flux continues to emerge in the intermediate area. C-class and an isolated M-class possible if region continues to grow.

NOAA 8537, N20W88. Beta region. To close to the limb to tell if any changes have occured. Region continues to show surging and brightenings in Ha. Still bright in Ha this morning. This region and NOAA 8526 produced the M4 event yesterday morning. C-class and M-class expected as it rotates over west limb.

NOAA 8538, N11W60. Beta region. Decaying.

NOAA 8539, N13E21. Alpha region. Two leading spots. Little change from yesterday.

NOAA 8540, S28E46. Beta region. Mostly leading spots. Mixing around leading spots. c-class events.

NOAA 8541, N21E53. Beta region. Compact region with irregular leading and trailing spots. Mixing in the intermediate area. C-class and M-class possible.

At the time of this report there is a M8 x-ray event going on but cannot say for sure what region is producing it.

RF

BBSO Solar Activity Report 09-MAY-1999 17:29:52 UT
Update M8 event is from NOAA 8537/26 going over west limb. Seeing loops in Ha.

RF

BBSO Solar Activity Report 10-MAY-1999 16:29:46 UT
A few high thin clouds,temperature in the 60s, seeing fair-good.

NOAA 8525, N16W67. Single round leader sunspot. Decay phase continues, but a C-class event and even a low-level M-class event are still possible before west limb passage.

NOAA 8534, S18E11. Weak decaying plage with a beta sunspot group.

NOAA 8535, N21E19. Large stable leading polarity sunspot. Weak opposite polarity flux adjacent to the leader spot--C-class events possible.

NOAA 8536, S24E03. Bright H-alpha plage, slightly decayed since yesterday. Isolated C-class event possible.

NOAA 8537, Beyond west limb at N20..produced an M-7 event yesterday during our observing window.

NOAA 8538, N10W70. Small decaying region just south of 8525.

NOAA 8539, N13E06. Tiny decaying plage with tiny sunspots.

NOAA 8540, S27E35. Beta sunspot group.

NOAA 8541, N22E40. Intermediate portion has grown slightly and become more complex. C-class events as well as another isolated M-class event expected.

WM

BBSO Solar Activity Report 11-MAY-1999 17:49:03 UT
Sunny, temperature in the 60s, N-NE wind gusts to 25 mph. Fair seeing.

NOAA 8525, N16W80. Large weak plage going over the NW limb.

NOAA 8534, S18W02. Increased in sunspot area and count. Beta magnetic class with bright H-alpha plage.

NOAA 8535, N21E06. Added a few more tiny opposite polarity sunspots around the large leader sunspot. C-class event expected.

NOAA 8536, S24W10. Stable beta sunspot group.

NOAA 8539, N13W07. Sunspot group continues to decay, very weak H-alpha plage.

NOAA 8540, S27E26. Beta sunspot group.

NOAA 8541, N22E28. Intermediate portion of the sunspot group has decayed. Brightest H-alpha plage on the disk. C-class events expected.

NOAA 85__, S17E77. Weak plage and single sunspot rotating over the SE limb.

WM

BBSO Solar Activity Report 12-MAY-1999 15:31:12 UT
NOAA 8534, S17W17. Beta group. Region has continued to grow in sunspot area and count. Region has grown mostly in the trailing area. Small amount of mixing in trailing area. C-class events.

NOAA 8535, N21W08. Little change from yesterday. C-class events.

NOAA 8536, S23W26. Slowly decaying beta region. Spread out.

NOAA 8540, S28E11. Another spread out slowly decaying beta region.

NOAA 8541, N22E15. Beta region. Decaying now taking place in the trailing spots. Still some small amounts of mixing. C-class events.

NOAA 85--, S20E61. Single round leading spot.

RF

BBSO Solar Activity Report 13-MAY-1999 16:54:43 UT
Sunny, gentle west wind, temperature in the 60s. Good seeing.

NOAA 8534, S18W30. Beta magnetic class, decayed slightly overnight.

NOAA 8535, N21W20. A few negative, trailing polarity, spots located west of the large positive, leading polarity, sunspot. C-class events possible.

NOAA 8536, S24W40. Small decaying beta sunspot group.

NOAA 8540, S27W02. Another small decaying beta sunspot group.

NOAA 8541, N22E02. Decay phase, but small events still possible.

NOAA 8542, S20E48. Weak H-alpha plage with a single leader sunspot. Interesting filament located along the region's magnetic neutral line. NOAA/SEC reported a C4/SF in 8542 on May 11th at 2208 UT.

Tiny sunspot and tiny H-alpha plage located at N05E46.

WM

BBSO Solar Activity Report 14-MAY-1999 16:17:03 UT
Sunny, temperature in the low 60s. Fair seeing.

NOAA 8534, S17W43. Beta sunspot group. Leader sunspot has grown slightly.

NOAA 8535, N21W33. Trailing, negative, polarity sunspots still present west of the large positive polarity leader sunspot. C-class events possible.

NOAA 8540, S26W15. Decay phase, weak H-alpha plage.

NOAA 8541, N22W11. Continues to decay, but small events still possible.

NOAA 8542, S21E35. Single leader sunspot...plage has a relaxed magnetic configuration.

NOAA 85__, S22E65. EFR with arch-type filaments and bright H-alpha plage.

NOAA 85__, N36E80. Weak H-alpha plage with one large sunspot at the NE limb.

WM

BBSO Solar Activity Report 15-MAY-1999 14:56:07 UT
NOAA 8534, S17W58. Alpha sunspot group. Region has decayed overnight. Trailing small spots have disappeared.

NOAA 8535, N21W46. Large leading spot is starting to show signs of breaking up. Penumber area has decaeased since yesterday. C-Class events.

NOAA 8541, N22W20. Continues to decay mostly in the leading spots. C-class events.

NOAA 8542, S20E22. Single stable leader sunspot.

NOAA 8544, S21E50. Beta sunspot group. Has grown slightly overnight. Still some arch filaments this morning. Brightest region in Ha.

NOAA 8545, N35E65. Compact H-alpha plage with very large sunspot. High latitude region.

RF

BBSO Solar Activity Report 16-MAY-1999 16:19:15 UT
NOAA 8534, S16W70. Alpha sunspot group. Slowly decaying. Region produced a M1 x-ray event this morning at 1730UT. Flare was bright in Hacl but small in area.

NOAA 8535, N22W58. Alpha sunspot group. Large leader spot. Little change from yesterday.

NOAA 8541, N21W35. Beta sunspot group. Region has shown new flux emerging mostly in the central area and has grown in sunspot area and count. Even with new flux little mixing going on. C-Class x-ray events.

NOAA 8542, S19E11. Single stable leader sunspot.

NOAA 8544, S19E35. Beta sunspot group. Region has continued to grow but shows no arch filaments today. Equal size leading and trailing spots. Some mixing of polarities in the trailing spots of the leader. C-Class events and maybe an isolated M-class.

NOAA 8546, S31W57. Small beta group.

NOAA 8547, N36E53. Alpha sunspot group. Large leading spot. Bright in H-alpha in the trailing plage. C-Class events.

RF

BBSO Solar Activity Report 17-MAY-1999 16:42:40 UT
Sunny and warm, temperature in the low 70s.

NOAA 8534, S16W90. West limb passage, numerous bright surges. C-class events possible.

NOAA 8535, N22W74. Large leader sunspot. Weak H-alpha plage.

NOAA 8541, N21W48. Beta sunspot group. Separate sunspot group located very close, just east, to 8541 at N21W41. C-class events possible.

NOAA 8542, S20W05. Single leader sunspot...weak H-alpha plage.

NOAA 8544, S19E23. Slowly growing large beta sunspot group. C-class events possible.

NOAA 8546, S32W73. Beta sunspot group near SW limb.

NOAA 8547, N37E40. Large leading sunspot. Small opposite polarity sunspot and bright H-alpha plage located SE of the main sunspot. C-class events possible.

Tiny alpha sunspot and weak H-alpha plage located at S20E50.

WM

BBSO Solar Activity Report 18-MAY-1999 18:51:38 UT
Mid and hi level clouds this morning, sunny afternoon, temp. in the 60s.

NOAA 8541, N21W63. Slight increase in sunspot count, area, and complexity. Beta-gamma magnetic configuration today. C-class events with the possiblity of an isolated low-level M-class event before 8541 rotates over the NW limb. Small, separate beta sunspot group located adjacent to 8541 at N25W50.

NOAA 8542, S20W17. Single leader sunspot.

NOAA 8544, S19E10. Beta sunspot group.

NOAA 8546, S32W88. Weak plage with a single sunspot going over the SW limb.

NOAA 8547, N37E27. Large leader sunspot with a few adjacent, opposite polarity, sunspots located a few degrees east. C-class events possible.

EFR, beta magnetic class. located at S20E40.

WM

BBSO Solar Activity Report 19-MAY-1999 17:49:23 UT
Sunny, moderate SW wind, fair seeing.

NOAA 8541, N20W76. Too close to the NW limb to evaluate magnetic complexity. H-alpha plage is not especially bright today. C-class event possible. Small beta sunspot group, NOAA 8547, remains just to the NE (N25W47) of 8541.

NOAA 8542, S20W30. Very stable leader sunspot.

NOAA 8544, S19W03. Increased spot count, area, and magnetic complexity since yesterday. Beta-gamma magnetic class. C-class events possible with a chance of an M-class event if negative polarity flux continues to develop in the trailing portion of the region.

NOAA 8547, N37E15. Large (naked-eye spot) leader sunspot with a few small trailer sunspots located, just outside the penumbra, to the north and north-east. A filament has/is forming along the neutral line between the small trailing spots and the large leader. C-class events possible.

NOAA 8548, S21E26. EFR seen here yesterday continues in growth phase. Beta sunspot class...strong arch-type filaments, Ellerman bombs and bright H-alpha plage.

Small, bright region just beyond the NE limb is displaying minor surges.

Faint, old H-alpha plage with a single leader sunspot is rotating over the SE limb at S14.

WM

BBSO Solar Activity Report 20-MAY-1999 16:27:11 UT
Sunny, temperature in the 60s, gentle west wind...fair seeing.

NOAA 8542, S20W43. Not much change in the leader sunspot since it rotated over the SE limb.

NOAA 8544, S20W16. Slight decay since yesterday. Opposite polarity sunspots in the trailing portion of the region have decayed. Low-level C-class events still possible.

NOAA 8545, N37E03. Large leader sunspot. Tiny trailing polarity sunspots less numerous and filament located just east of the large spot is less visible today. C-class events possible. Note: NOAA 8545 was incorrectly listed on our BBSO reports as NOAA 8547 for the past few days.

NOAA 8548, S20E13. Slightly decayed from yesterday. Beta sunspot group.

Strong EFR with arch-type filaments, Ellerman bombs and bright H-alpha plage located at N24W60. C-class events possible before west limb passage.

Decaying active region with a simple beta sunspot group at S14E70 and another small alpha sunspot located at N33E80. Large, but weak broken plage near and beyond the NE limb.

WM

BBSO Solar Activity Report 21-MAY-1999 15:48:23 UT
Sunny, gentle west wind, daytime temperature in the 60s...good seeing.

NOAA 8542, S21W57. Single leader spot. Slowly decaying.

NOAA 8544, S20W30. Beta sunspot region. Continues in slow decay phase. Low level C-Class events still possible.

NOAA 8545, N36W10. Large leader spot. Trailing plage is very bight in H-alpha. Little change from yesterday. C-Class events possible.

NOAA 8548, S20W01. Beta sunspot region. Continues to slowly decay.

NOAA 8549, N24W73. Beta sunspot region. Region has not continued to grow. Not as bright in H-alpha as yesterday. C-Class events possible.

NOAA 8550, S14E58. Beta sunspot region. Region may have grown in area slightly.

NOAA 85__, N32E67. Small beta region. Mt. Wilson has it as a reverse polarity region.

RF

BBSO Solar Activity Report 22-MAY-1999 16:50:44 UT
Clouds building early and maybe rain later today.

NOAA 8543, S21W72. Single leader spot nearing west limb. Continues slow decay.

NOAA 8544, S20W45. Beta sunspot region. Continues slow decay mostly in the leading spot area. C-Class events possible.

NOAA 8545, N36W17. Large leader spot. Not as bright in H-alpha today as yesterday. C-class events possible.

NOAA 8548, S20W16. Beta sunspot region. Continues slow decay.

NOAA 8550, S14E44. Beta sunspot region. Large irregular leading spot with some mixing surruounding the leading spot. Has grown since yesterday. C-class events and M-Class if region continues to grow.

NOAA 8551, N32E52. Small region.

RF

BBSO Solar Activity Report 23-MAY-1999 15:41:18 UT
Clouds building again this morning.

NOAA 8544, S20W56. Beta sunspot region. Continues slow decay mostly in the leading spots. C-Class events possible.

NOAA 8545, N36W29. Very large leader spot. A couple of small sourounding spots have formed. C-Class events.

NOAA 8548, S20W30. Beta sunspot region. Continues to slowly decay. Mostly in trailing spots.

NOAA 8550, S14E32. Beta sunspot region. Region has not cintinued to grow. Still irregular leading spots with some mixing around the edges. C-Class events and a slight chance for a low level M-Class event.

NOAA 8551, S32E41. Beta sunspot region. Small bipolar region in a more extensive old plage area.

RF

BBSO Solar Activity Report 24-MAY-1999 16:13:16 UT
Poor observing conditions today.. Low pressure centered over Las Vegas is producing mostly cloudy conditions with a slight chance of afternoon showers in the San Bernardino Mountains.

NOAA 8544, S21W66. Beta sunspot group..leader sunspots continue to decay.

NOAA 8545, N37W43. Large, stable leader sunspot. Very little change since it rotated over the east limb on May 14th. Minor trailing polarity sunspots come and go. Moderate H-alpha plage intensity adjacent to the well-developed filament located just east of the leader sunspot. C-class events possible... M-class possible if the filament is involved.

NOAA 8548, S20W43. Beta sunspot group..trailing sunspots continue to decay.

NOAA 8550, S14E19. Beta-gamma-delta sunspot group in growth phase. Delta located in the leading portion of the region and mixed polarities in the trailing portion as well. At this time we expect C-class events with a chance for an isolated M-class event as well.

NOAA 8551, N32E28. Beta sunspot group located within a large plage remnant. C-class events possible.

NOAA 8552, N21E73. Large leader sunspot..weak H-alpha plage in decay phase.

WM

BBSO Solar Activity Report 25-MAY-1999 18:35:39 UT
Sunny AM, mostly sunny PM and warm (70s) today. Fair-good seeing.

NOAA 8544, S22W80. Trailing sunspot and weak plage at the SW limb.

NOAA 8545, N37W56. Not much change..continues to maintain moderate H-alpha plage intensity. Small opposite polarity sunspots adjacent to the large leader sunspot. C-class events and, if the filament erupts, a slight chance for a low-level m-class event before west limb passage.

NOAA 8548, S20W56. Slight decay continues in the trailing sunspots.

NOAA 8550, S14E06. Beta-gamma-delta magnetic configuration again today, but delta is weaker. C-class events with an isolated, low-level M-class possible.

NOAA 8551, N32E15. Beta sunspot group within an old decaying plage. C-class events possible.

NOAA 8552, N21E60. Beta-gamma magnetic class. Large leader sunspot surrounded by small leader and trailer polarity sunspots. Both C-class and an isolated low-level M-class events are possible.

NOAA 85__, N26E43. Small beta sunspot group.

WM

BBSO Solar Activity Report 26-MAY-1999 16:02:43 UT
Sunny AM but clouds building fast over lake. Good seeing.

NOAA 8545, N37W69. Large leading spot. No change from yesterday. Still small opposite polarity sunspots on trailing area to the large spot. C-Class events and a slight chance for a low level M-Class event.

NOAA 8548, S20W70. Beta magnetic region. Continues slow decay in trailing spots.

NOAA 8550, S14W13. Beta-gamma magnetic region. Trailing spots have decayed alot since yesterday. No longer shows a delta configuration. Nice filament wrapped around and extending from the region. C-Class events and a chance for a M-Class event.

NOAA 8551, N32W01. Beta magnetic region. Little change from yesterday.

NOAA 8552, N20E42. Beta magnetic region. Large round leading spot surrounded by small spots. C-class events and a slight chance for a low level M-Class.

NOAA 8554, N25E28. Beta magnetic region. Region has grown in sunspot area and count. Region shows some mixing and maybe a delta is forming. C-Class events.

NOAA 85--, N15E71. Single round spot at east limb.

RF

BBSO Solar Activity Report 27-MAY-1999 15:59:37 UT
Sunny, excellent seeing until 17:00 UT...cloudy and rain showers >17:00 UT.

NOAA 8545, N37W80. Moderate plage intensity..another C-class event possible with a very slight chance of a low-level M-class event.

NOAA 8548, S20W79. Beta sunspot group with many bright plage elements. C-class events possible.

NOAA 8550, S14W26. Weak plage and alpha sunspot group... decayed significantly since yesterday, but very interesting tall, dark filament..the filament is a good candidate for an eruption. C- or M-class event expected if the filament erupts.

NOAA 8551, N31W14. Beta sunspot group within a large decaying plage system complete with a well-developed filament.

NOAA 8552, N30E34. Nice round leader sunspot with a few tiny opposite polarity spots located just a few degrees north and 13-15 degrees east. A new strong EFR (NOAA 85__)is located just to the west of the big sunspot at N20E26. C- and M-class events expected from the combination of both regions.

NOAA 8554, N26E15. Compact beta sunspot group with a tiny delta configuration. C-class events expected with a very slight chance for an M-class event.

NOAA 8555, N16E66. Single leader sunspot with weak H-alpha plage.

NOAA 85__, S30E80. Too close to the SE limb to evaluated magnetic complexity, but sunspot shape on several spots is irregular and H-alpha plage is bright and the region has been displaying bright limb events this morning. C- and M-class events.

Another region just behind the NE limb at about N10 degrees.

WM

BBSO Solar Activity Report 28-MAY-1999 16:24:13 UT
Mostly sunny seeing good.

NOAA 8550, S14W37. Alpha sunspot group. Continues rapid decay. Filament still present today. C-class or M-class event if filament erupts.

NOAA 8551, N30W27. Alpha round trailing spot within large decaying plage.

NOAA 8552, N20E24. Beta-gamma region. Large round leader spot. Little change in this region but this region is one of several regions streching from centerdisk to the west limb in the northern hemisphere. Small regions continue to devlope east of this region. C-class and M-class expected from this combination of regions.

NOAA 8554, N25E01. Compact beta region. No delta configuration is present today and region has decayed slighly from yesterday. A small bipolar region as formed to the west. C-class events.

NOAA 8555, N15E51. Single round leader spot.

NOAA 8557, S28E61. Beta sunpsot group with some hints of mixing but still too close to the limb to evaluate complexity. Not as bright in H-alpha today. C-class events and a chance of a low level M-class.

NOAA 85--, N18E10. Beta magnetic class. Region has continued to grow but at a slower rate. C-class events.

NOAA 85--, N13E70. Beta magnetic class. Too close to the limb to evaluate complexity.

RF

BBSO Solar Activity Report 29-MAY-1999 15:51:04 UT
Sunny today with good seeing.

NOAA 8550, S14W40. No spots today. Region continues to decay. Filament is still there but has decreased in darkness and size. C-class or M-class event if filament erupts.

NOAA 8551, N30W41. Round trailing round spot within large decaying plage. Little change from yesterday.

NOAA 8552, N20E10. Beta-gamma region. Little change from yesterday. The surrounding regions noted yesterday have decayed. C-class events and a chance of a low level M-class event.

NOAA 8554, N24W12. Compact beta region that has decayed alot since yesterday.

NOAA 8555, N15E36. Single round leader spot in very large area decaying plage.

NOAA 8557, S28E49. Beta sunspot group. Region had a M1 event around 5:00UT today. Sunspots are irregular in shape and are on top of each other. Neutral line runs mostly east-west. There is some hinting of mixing. C-class events and a chance of another low level M-class.

NOAA 8558, N15E58. Beta sunspot group. Small irregular scattered spots with some mixing. C-class events.

NOAA 85--, N18W03. Beta sunspot group. Region has decayed since yesterday. Part of the NOAA 8552 complex. C-class.

RF

BBSO Solar Activity Report 30-MAY-1999 15:51:06 UT
Sunny today seeing fair to good at times.

NOAA 8552, N20W03. Beta-gamma region. Little change from yesterday. A couple of small satellite spots have formed in the trailing plage. C-class events and a slight chance for a low level M-class.

NOAA 8555, N15E25. Single round leader spot in extensive plage.

NOAA 8557, S28E36. Beta sunspot group with spot north and south causing a east-west neutral line. Maybe in slow decay now. C-class and a chance of a low level M-class.

NOAA 8558, N15E46. Beta-delta sunspot group. This region has had major grow in the last 24 hours. Yesterday there were only small scattered spots today there is large leading and trailing spots. Region has a weak delta configuration in the large leading spot. Also some mixing. C-class events and M-class events.

NOAA 85--, N18W16. Beta sunspot group. Slow decay. Part of the NOAA 8552 complex. C-class events.

RF

BBSO Solar Activity Report 31-MAY-1999 15:25:34 UT
Sunny, moderate west wind, temperature in the low 70s....fair seeing.

NOAA 8552, N19W19. Large round leader sunspot. Stable beta magnetic class, but located within an active region complex consisting of three separate sunspot groups...C-class events possible with a possiblity of an isolated low-level M-class event if all three regions are involved.

Separate region located just west of 8252 (BBSO 4277, N18W28) has a beta-gamma-delta magnetic class. There is a tiny delta configuration in the trailing polarity sunspots.

There is another small sunspot group, BBSO 4281, N25W32) located just north of BBSO 4277 and NW of NOAA 8252.

NOAA 8555, N16E12. Leader polarity alpha sunspot group. Large, broken low-intensity plage.

NOAA 8557/8560, S28E25. Very interesting region. Leading, negative polarity, sunspots are smaller and postioned south instead of west of the trailing polarity sunspots. C-class events expected.

BBSO 4282, S16E26. EFR located directly north of 8557/8560. BBSO 4282 is currently the brightest H-alpha region on the disk and is showing a magnetically complex configuration with mixed polarities and possible deltas forming in the leading and trailing portions. C-class events expected with M-class events if the region continues to evolve towards a complex magnetic classification.

NOAA 8558, N15E35. Continued growth overnight. Some mixed polarities. C-class events expected.

Weak H-alpha plage with a small beta sunspot group located at S25E67.

WM


Comments:
Bill Marquette whm@bbso.njit.edu
© BBSO/NJIT - Automatically generated on 31 May 1999