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M9.9 solar flare on 2003-10-22
ClassM9.9NOAA report
Peak20:072003-10-22 UTC
Duration41 min
Peak flux9.9e-05W/m²
| Comparison | Value |
|---|---|
| Rank in year | 21 / 1496 |
| Other M/X flares that day | 6 |
| M/X flares that month | 44 |
| Solar cycle | Cycle 23 |
| Active region | AR 10486 (43 flares) |
Compared with the strongest flares of 2003
X28.0
X17.2
X10.0
X8.3
X5.4
X3.9
X3.6
X2.7
X1.7
X1.6
X1.5
X1.5
Other M/X flares that day
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 03:28 | 03:51 | 113 | M3.7 | N07E25 | 10486 | |
| 08:30 | 08:44 | 23 | M1.7 | – | 10486 | |
| 09:37 | 09:56 | 22 | M1.7 | – | 10486 | |
| 15:06 | 15:11 | 7 | M1.4 | N05E22 | 10484 | |
| 15:57 | 16:01 | 7 | M1.2 | N03E17 | 10484 | |
| 21:56 | 22:04 | 21 | M2.1 | – | 10486 |
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.
← X1.1 2003-10-19X5.4 2003-10-23 →
About this page
A M9.9 flare that began 2003-10-22 19:47 UTC; No. 21 of 1,496 C-class-or-larger flares in 2003.