Solar Flare WatchHome › Flare history › 2001
M6.4 solar flare on 2001-05-20
ClassM6.4NOAA report
Peak06:032001-05-20 UTC
Duration6 min
Peak flux6.4e-05W/m²
| Comparison | Value |
|---|---|
| Rank in year | 39 / 2429 |
| Other M/X flares that day | 1 |
| M/X flares that month | 11 |
| Solar cycle | Cycle 23 |
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 |
|---|---|---|---|---|---|---|
| 09:12 | 09:20 | 11 | M1.5 | – | – |
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.
← M7.8 2001-04-26M7.8 2001-06-13 →
About this page
A M6.4 flare that began 2001-05-20 06:00 UTC; No. 39 of 2,429 C-class-or-larger flares in 2001.