Solar Flare WatchHome › Flare history › Region ranking
Solar flares from active region 9830
C20
M3
X0
LargestM4.42002-02-21
Span10 days
Flares by day
3
1
3
2
1
4
3
5
1
All flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 2002-02-17 | 14:53 | 15:07 | 24 | C1.7 | S20E34 | 9830 |
| 2002-02-17 | 18:55 | 19:01 | 11 | C1.9 | S19E30 | 9830 |
| 2002-02-17 | 20:14 | 20:19 | 10 | C2.3 | S18E30 | 9830 |
| 2002-02-18 | 20:18 | 21:15 | 100 | M1.0 | S20E16 | 9830 |
| 2002-02-20 | 01:10 | 01:14 | 9 | C2.1 | S16W02 | 9830 |
| 2002-02-20 | 16:18 | 16:26 | 11 | C9.7 | S16W12 | 9830 |
| 2002-02-20 | 21:00 | 21:07 | 9 | M2.4 | S18W11 | 9830 |
| 2002-02-21 | 16:45 | 16:48 | 5 | C3.5 | S17W23 | 9830 |
| 2002-02-21 | 23:49 | 00:10 | 38 | M4.4 | – | 9830 |
| 2002-02-22 | 22:23 | 22:41 | 27 | C2.7 | S21W33 | 9830 |
| 2002-02-23 | 08:08 | 08:12 | 11 | C2.6 | S20W36 | 9830 |
| 2002-02-23 | 11:55 | 11:58 | 6 | C2.1 | S19W43 | 9830 |
| 2002-02-23 | 13:52 | 14:00 | 17 | C4.3 | S21W43 | 9830 |
| 2002-02-23 | 22:46 | 22:50 | 8 | C7.0 | S15W47 | 9830 |
| 2002-02-24 | 04:33 | 04:38 | 9 | C1.3 | S19W52 | 9830 |
| 2002-02-24 | 15:35 | 15:40 | 9 | C2.4 | S19W62 | 9830 |
| 2002-02-24 | 20:31 | 20:38 | 17 | C9.0 | S16W68 | 9830 |
| 2002-02-25 | 07:08 | 07:17 | 17 | C2.4 | S13W67 | 9830 |
| 2002-02-25 | 15:50 | 15:54 | 7 | C3.3 | S16W72 | 9830 |
| 2002-02-25 | 19:43 | 19:46 | 5 | C3.2 | S15W71 | 9830 |
| 2002-02-25 | 21:24 | 21:27 | 6 | C4.1 | S14W75 | 9830 |
| 2002-02-25 | 22:48 | 22:54 | 20 | C2.0 | S18W78 | 9830 |
| 2002-02-26 | 10:25 | 10:27 | 4 | C9.6 | S13W89 | 9830 |
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 9830 produced 23 C+ flares between 2002-02-17 and 2002-02-26.