Solar Flare WatchHome › Flare history › 1980
X3.9 solar flare on 1980-10-25
ClassX3.9NOAA report
Peak09:501980-10-25 UTC
Duration28 min
Peak flux3.9e-04W/m²
| Comparison | Value |
|---|---|
| Rank among X flares (1975 – Jun 2017) | 72 / 491 |
| Rank in year | 3 / 2460 |
| Other M/X flares that day | 1 |
| M/X flares that month | 33 |
| Solar cycle | Cycle 21 |
| Position on disk | N19W59 |
| Active region | AR 2751 (16 flares) |
Compared with the strongest flares of 1980
X9.0
X4.4
X3.9
X3.3
X3.3
X3.0
X2.7
X2.6
X2.5
X2.5
X2.2
X1.9
Other M/X flares that day
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 05:35 | 05:42 | 46 | M1.3 | N19W59 | 2751 |
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.
← X3.3 1980-10-14X4.4 1980-11-05 →
About this page
A X3.9 flare that began 1980-10-25 09:42 UTC; No. 3 of 2,460 C-class-or-larger flares in 1980.