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M5.5 solar flare on 1983-08-13
ClassM5.5NOAA report
Peak18:131983-08-13 UTC
Duration80 min
Peak flux5.5e-05W/m²
| Comparison | Value |
|---|---|
| Rank in year | 13 / 2060 |
| Other M/X flares that day | 1 |
| M/X flares that month | 18 |
| Solar cycle | Cycle 21 |
| Position on disk | S08E00 |
| Active region | AR 4278 (22 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 |
|---|---|---|---|---|---|---|
| 04:22 | 04:23 | 18 | M1.2 | S10E04 | 4279 |
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.
← M8.5 1983-08-01X2.3 1984-02-17 →
About this page
A M5.5 flare that began 1983-08-13 18:00 UTC; No. 13 of 2,060 C-class-or-larger flares in 1983.