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M7.9 solar flare on 1989-02-21
ClassM7.9NOAA report
Peak23:571989-02-21 UTC
Duration52 min
Peak flux7.9e-05W/m²
| Comparison | Value |
|---|---|
| Rank in year | 79 / 2608 |
| Other M/X flares that day | 4 |
| M/X flares that month | 38 |
| Solar cycle | Cycle 22 |
| Position on disk | S13W20 |
| Active region | AR 5368 (37 flares) |
Compared with the strongest flares of 1989
X20.0
X15.0
X13.0
X9.8
X6.5
X5.7
X4.5
X4.1
X4.0
X4.0
X3.9
X3.6
Other M/X flares that day
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 12:07 | 12:17 | 95 | M2.7 | S12W14 | 5368 | |
| 18:17 | 18:19 | 55 | M3.9 | S12W19 | 5368 | |
| 21:58 | 22:03 | 16 | M2.8 | S13W24 | 5368 | |
| 23:30 | 23:33 | 16 | M1.1 | – | – |
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.
← X1.8 1989-02-10X15.0 1989-03-06 →
About this page
A M7.9 flare that began 1989-02-21 23:43 UTC; No. 79 of 2,608 C-class-or-larger flares in 1989.