Solar Flare WatchHome › Flare history › 1990
M7.6 solar flare on 1990-07-04
ClassM7.6NOAA report
Peak16:481990-07-04 UTC
Duration64 min
Peak flux7.6e-05W/m²
| Comparison | Value |
|---|---|
| Rank in year | 21 / 2551 |
| Other M/X flares that day | 1 |
| M/X flares that month | 13 |
| Solar cycle | Cycle 22 |
| Position on disk | N21E29 |
| Active region | AR 6138 (7 flares) |
Compared with the strongest flares of 1990
X9.3
X5.5
X3.6
X3.4
X3.0
X2.4
X2.2
X1.9
X1.8
X1.7
X1.5
X1.4
Other M/X flares that day
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 17:31 | 17:39 | 50 | M4.8 | S22W22 | 6131 |
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.
← M6.4 1990-06-12M7.9 1990-08-10 →
About this page
A M7.6 flare that began 1990-07-04 16:40 UTC; No. 21 of 2,551 C-class-or-larger flares in 1990.