Solar Flare WatchHome › Flare history › 1991
M5.2 solar flare on 1991-06-02
ClassM5.2NOAA report
Peak07:461991-06-02 UTC
Duration120 min
Peak flux5.2e-05W/m²
| Comparison | Value |
|---|---|
| Rank in year | 108 / 3297 |
| Other M/X flares that day | 3 |
| M/X flares that month | 72 |
| Solar cycle | Cycle 22 |
Compared with the strongest flares of 1991
X12.0
X12.0
X12.0
X12.0
X12.0
X10.0
X10.0
X9.4
X7.1
X6.1
X5.5
X5.3
Other M/X flares that day
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 00:29 | 00:41 | 50 | M1.6 | – | – | |
| 13:53 | 14:14 | 150 | M2.8 | S07W22 | 6652 | |
| 20:27 | 20:33 | 24 | M1.0 | S08W22 | 6652 |
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.
← X12.0 1991-06-01X12.0 1991-06-04 →
About this page
A M5.2 flare that began 1991-06-02 07:37 UTC; No. 108 of 3,297 C-class-or-larger flares in 1991.