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X0.2 solar flare on 1978-04-11
ClassX0.2NOAA report
Peak14:261978-04-11 UTC
Duration224 min
Peak flux2.0e-05W/m²
| Comparison | Value |
|---|---|
| Rank among X flares (1975 – Jun 2017) | 448 / 491 |
| Rank in year | 6 / 1141 |
| Other M/X flares that day | 1 |
| M/X flares that month | 20 |
| Solar cycle | Cycle 21 |
| Position on disk | N19W54 |
| Active region | AR 1057 (32 flares) |
Compared with the strongest flares of 1978
X1.5
M5.0
M3.0
M3.0
M3.0
M2.0
M2.0
M2.0
M2.0
M2.0
M2.0
M1.0
Other M/X flares that day
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 20:53 | 21:22 | 34 | M0.1 | N13E57 | 1073 |
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.
← X0.1 1978-04-08X0.5 1978-04-28 →
About this page
A X0.2 flare that began 1978-04-11 13:40 UTC; No. 6 of 1,141 C-class-or-larger flares in 1978.