Solar Flare WatchHome › Flare history › 1984
M7.2 solar flare on 1984-04-23
ClassM7.2NOAA report
Peak16:401984-04-23 UTC
Duration51 min
Peak flux7.2e-05W/m²
| Comparison | Value |
|---|---|
| Rank in year | 9 / 1262 |
| Other M/X flares that day | 3 |
| M/X flares that month | 39 |
| Solar cycle | Cycle 21 |
| Active region | AR 4474 (100 flares) |
Compared with the strongest flares of 1984
X13.0
X10.1
X4.1
X2.7
X2.3
X1.7
X1.0
M7.5
M7.2
M7.1
M6.3
M5.7
Other M/X flares that day
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 01:16 | 02:00 | 115 | M3.2 | S11E64 | 4474 | |
| 01:48 | 02:01 | 29 | M3.6 | – | 4474 | |
| 05:07 | 05:15 | 82 | M1.8 | S11E62 | 4474 |
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 1984-04-22X1.0 1984-04-24 →
About this page
A M7.2 flare that began 1984-04-23 15:55 UTC; No. 9 of 1,262 C-class-or-larger flares in 1984.