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X13.0 solar flare on 1984-04-24
ClassX13.0NOAA report
Peak00:011984-04-24 UTC
Duration104 min
Peak flux1.3e-03W/m²
| Comparison | Value |
|---|---|
| Rank among X flares (1975 – Jun 2017) | 8 / 491 |
| Rank in year | 1 / 1262 |
| Other M/X flares that day | 3 |
| M/X flares that month | 39 |
| Solar cycle | Cycle 21 |
| Position on disk | S12E43 |
| Active region | AR 4474 (100 flares) |
Compared with the strongest flares of 1984
X13.0
X10.1
X4.1
X2.7
X2.3
X1.7
X1.0
M7.5
M7.2
M7.1
M6.3
M5.7
Other M/X flares that day
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 02:59 | 04:20 | 145 | X1.0 | S10E57 | 4474 | |
| 17:24 | 17:28 | 10 | M1.5 | – | 4474 | |
| 20:15 | 20:20 | 15 | M1.1 | S11E56 | 4474 |
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.
← X1.0 1984-04-24M7.1 1984-05-05 →
About this page
A X13.0 flare that began 1984-04-24 23:56 UTC; No. 1 of 1,262 C-class-or-larger flares in 1984.