Solar Flare WatchHome › Flare history › 2001
M9.5 solar flare on 2001-09-09
ClassM9.5NOAA report
Peak20:452001-09-09 UTC
Duration8 min
Peak flux9.5e-05W/m²
| Comparison | Value |
|---|---|
| Rank in year | 23 / 2429 |
| Other M/X flares that day | 5 |
| M/X flares that month | 51 |
| Solar cycle | Cycle 23 |
| Position on disk | S31E26 |
| Active region | AR 9608 (38 flares) |
Compared with the strongest flares of 2001
X20.0
X14.4
X6.2
X5.6
X5.3
X3.4
X2.8
X2.6
X2.3
X2.0
X1.7
X1.6
Other M/X flares that day
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 02:32 | 02:40 | 15 | M1.9 | S24E26 | 9608 | |
| 09:55 | 10:01 | 11 | M1.0 | S31E30 | 9608 | |
| 15:10 | 15:16 | 11 | M3.4 | S17E03 | 9607 | |
| 15:23 | 15:26 | 5 | M2.2 | S32E22 | 9608 | |
| 18:35 | 18:41 | 8 | M2.0 | – | 9608 |
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.
← M6.0 2001-09-05M5.6 2001-09-16 →
About this page
A M9.5 flare that began 2001-09-09 20:40 UTC; No. 23 of 2,429 C-class-or-larger flares in 2001.