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Solar flares from active region 9871
C8
M3
X0
LargestM4.02002-03-17
Span10 days
Flares by day
1
1
1
1
3
3
1
All flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 2002-03-12 | 23:01 | 23:13 | 23 | M1.5 | S22E93 | 9871 |
| 2002-03-13 | 23:02 | 23:35 | 58 | M1.0 | S22E75 | 9871 |
| 2002-03-14 | 16:44 | 16:53 | 17 | C4.9 | S23E57 | 9871 |
| 2002-03-16 | 11:20 | 11:24 | 7 | C2.9 | S20E33 | 9871 |
| 2002-03-17 | 04:52 | 04:58 | 9 | C3.1 | – | 9871 |
| 2002-03-17 | 17:01 | 17:05 | 6 | C4.5 | S22E20 | 9871 |
| 2002-03-17 | 19:24 | 19:31 | 10 | M4.0 | S22E16 | 9871 |
| 2002-03-18 | 16:20 | 16:25 | 8 | C3.5 | S19E04 | 9871 |
| 2002-03-18 | 19:06 | 19:18 | 16 | C8.9 | S21E02 | 9871 |
| 2002-03-18 | 21:47 | 21:52 | 8 | C2.1 | S19E01 | 9871 |
| 2002-03-21 | 18:06 | 18:13 | 18 | C1.3 | S24W25 | 9871 |
All times UTC. Until June 2017 classes are NOAA's reports of the time (GOES-15 and earlier included a 0.7 scaling factor); later classes come from calibrated GOES-16/18 data, so the same flare reads about 1.4× larger. Do not compare the two periods directly.
About this page
NOAA active region 9871 produced 11 C+ flares between 2002-03-12 and 2002-03-21.