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M5.5 solar flare on 2000-07-21
ClassM5.5NOAA report
Peak14:372000-07-21 UTC
Duration13 min
Peak flux5.5e-05W/m²
| Comparison | Value |
|---|---|
| Rank in year | 31 / 2492 |
| Other M/X flares that day | 4 |
| M/X flares that month | 54 |
| Solar cycle | Cycle 23 |
| Active region | AR 9090 (28 flares) |
Compared with the strongest flares of 2000
X5.7
X4.0
X2.3
X2.3
X2.0
X1.9
X1.9
X1.8
X1.8
X1.2
X1.2
X1.2
Other M/X flares that day
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 05:17 | 05:24 | 12 | M1.7 | – | 9090 | |
| 10:05 | 10:15 | 17 | M1.9 | N12E13 | 9090 | |
| 10:33 | 10:50 | 23 | M1.9 | S13W18 | 9087 | |
| 23:31 | 00:01 | 35 | M3.3 | N21W61 | 9088 |
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.
← M5.0 2000-07-20M8.0 2000-07-25 →
About this page
A M5.5 flare that began 2000-07-21 14:30 UTC; No. 31 of 2,492 C-class-or-larger flares in 2000.