Solar Flare WatchHome › Flare history › 1980
X1.0 solar flare on 1980-07-11
ClassX1.0NOAA report
Peak18:591980-07-11 UTC
Duration37 min
Peak flux1.0e-04W/m²
| Comparison | Value |
|---|---|
| Rank among X flares (1975 – Jun 2017) | 392 / 491 |
| Rank in year | 17 / 2460 |
| Other M/X flares that day | 2 |
| M/X flares that month | 22 |
| Solar cycle | Cycle 21 |
| Position on disk | S10E72 |
| Active region | AR 2562 (38 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
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.
← M8.9 1980-07-05M5.3 1980-07-11 →
About this page
A X1.0 flare that began 1980-07-11 18:51 UTC; No. 17 of 2,460 C-class-or-larger flares in 1980.