Solar Flare WatchHome › Flare history › 2002
M5.1 solar flare on 2002-02-20
ClassM5.1NOAA report
Peak06:122002-02-20 UTC
Duration24 min
Peak flux5.1e-05W/m²
| Comparison | Value |
|---|---|
| Rank in year | 28 / 2553 |
| Other M/X flares that day | 4 |
| M/X flares that month | 18 |
| Solar cycle | Cycle 23 |
| Position on disk | N12W72 |
| Active region | AR 9825 (27 flares) |
Compared with the strongest flares of 2002
X4.8
X3.3
X3.1
X3.0
X2.1
X1.8
X1.5
X1.5
X1.5
X1.2
X1.0
X1.0
Other M/X flares that day
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 02:44 | 02:51 | 12 | M4.2 | N15W58 | 9825 | |
| 09:46 | 09:59 | 18 | M4.3 | N18W83 | 9825 | |
| 17:03 | 17:11 | 15 | M3.5 | S09W62 | – | |
| 21:00 | 21:07 | 9 | M2.4 | S18W11 | 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.
← M9.5 2002-01-09M5.7 2002-03-14 →
About this page
A M5.1 flare that began 2002-02-20 05:52 UTC; No. 28 of 2,553 C-class-or-larger flares in 2002.