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X3.1 solar flare on 1983-05-07
ClassX3.1NOAA report
Peak22:161983-05-07 UTC
Duration49 min
Peak flux3.1e-04W/m²
| Comparison | Value |
|---|---|
| Rank among X flares (1975 – Jun 2017) | 106 / 491 |
| Rank in year | 2 / 2060 |
| Other M/X flares that day | 2 |
| M/X flares that month | 23 |
| Solar cycle | Cycle 21 |
| Position on disk | S30E67 |
| Active region | AR 4171 (25 flares) |
Compared with the strongest flares of 1983
X4.1
X3.1
X2.4
X2.3
X1.4
X1.3
M8.5
M7.0
M6.7
M5.6
M5.6
M5.5
Other M/X flares that day
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 07:43 | 07:46 | 28 | M1.0 | S28E72 | 4171 | |
| 10:36 | 10:47 | 18 | M1.2 | – | – |
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.
← M6.7 1983-04-18X1.3 1983-05-08 →
About this page
A X3.1 flare that began 1983-05-07 22:16 UTC; No. 2 of 2,060 C-class-or-larger flares in 1983.