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X0.1 solar flare on 1978-12-13
ClassX0.1NOAA report
Peak23:581978-12-13 UTC
Duration27 min
Peak flux1.0e-05W/m²
| Comparison | Value |
|---|---|
| Rank among X flares (1975 – Jun 2017) | 471 / 491 |
| Rank in year | 18 / 1141 |
| Other M/X flares that day | 5 |
| M/X flares that month | 32 |
| Solar cycle | Cycle 21 |
| Position on disk | S17W79 |
| Active region | AR 1447 (19 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 |
|---|---|---|---|---|---|---|
| 00:17 | 00:18 | 46 | M0.2 | S18W67 | 1447 | |
| 05:13 | 06:23 | 138 | M0.1 | S16W73 | 1447 | |
| 18:02 | 18:26 | 64 | M0.2 | S19W87 | 1447 | |
| 20:08 | 20:11 | 27 | M0.1 | S19W88 | 1447 | |
| 20:34 | 20:46 | 23 | M0.1 | S15W13 | 1444 |
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.
← X0.2 1978-12-12X0.1 1978-12-14 →
About this page
A X0.1 flare that began 1978-12-13 23:53 UTC; No. 18 of 1,141 C-class-or-larger flares in 1978.