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X1.8 solar flare on 2024-02-21
ClassX1.8GOES-16 science data
Peak23:072024-02-21 UTC
Duration21 min
Peak flux1.8e-04W/m²
| Comparison | Value |
|---|---|
| Rank among X flares (since Jun 2017) | 41 / 108 |
| Rank in year | 20 / 3708 |
| Other M/X flares that day | 1 |
| M/X flares that month | 48 |
| Solar cycle | Cycle 25 |
Compared with the strongest flares of 2024
X8.9
X8.6
X7.0
X5.8
X4.4
X4.4
X3.9
X3.4
X3.3
X3.2
X2.9
X2.8
Other M/X flares that day
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 23:58 | 00:14 | 32 | M1.5 | – | – |
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.
← X2.5 2024-02-16X1.6 2024-02-22 →
About this page
A X1.8 flare that began 2024-02-21 22:52 UTC; No. 20 of 3,708 C-class-or-larger flares in 2024.