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M5.0 solar flare on 2023-02-21
ClassM5.0GOES-16 science data
Peak20:172023-02-21 UTC
Duration32 min
Peak flux5.0e-05W/m²
| Comparison | Value |
|---|---|
| Rank in year | 44 / 3209 |
| Other M/X flares that day | 2 |
| M/X flares that month | 52 |
| Solar cycle | Cycle 25 |
Compared with the strongest flares of 2023
X4.9
X2.8
X2.2
X2.0
X1.9
X1.6
X1.4
X1.2
X1.2
X1.1
X1.0
X1.0
Other M/X flares that day
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 11:05 | 11:11 | – | M1.5 | – | – | |
| 11:14 | 11:23 | 16 | M4.7 | – | – |
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.
← X2.2 2023-02-17M6.3 2023-02-25 →
About this page
A M5.0 flare that began 2023-02-21 19:57 UTC; No. 44 of 3,209 C-class-or-larger flares in 2023.