Solar Flare WatchHome › Flare history › 2001
M7.7 solar flare on 2001-01-20
ClassM7.7NOAA report
Peak21:202001-01-20 UTC
Duration26 min
Peak flux7.7e-05W/m²
| Comparison | Value |
|---|---|
| Rank in year | 32 / 2429 |
| Other M/X flares that day | 1 |
| M/X flares that month | 10 |
| Solar cycle | Cycle 23 |
| Position on disk | S07E46 |
| Active region | AR 9313 (10 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 |
|---|---|---|---|---|---|---|
| 18:33 | 18:47 | 26 | M1.2 | S07E40 | 9313 |
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.
← X4.0 2000-11-26M5.7 2001-03-08 →
About this page
A M7.7 flare that began 2001-01-20 21:06 UTC; No. 32 of 2,429 C-class-or-larger flares in 2001.