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X1.9 solar flare on 2025-02-23
ClassX1.9GOES-16 science data
Peak19:272025-02-23 UTC
Duration11 min
Peak flux1.9e-04W/m²
| Comparison | Value |
|---|---|
| Rank among X flares (since Jun 2017) | 38 / 108 |
| Rank in year | 4 / 3004 |
| Other M/X flares that day | 4 |
| M/X flares that month | 50 |
| Solar cycle | Cycle 25 |
Compared with the strongest flares of 2025
X5.1
X4.0
X2.4
X1.9
X1.9
X1.8
X1.8
X1.7
X1.7
X1.2
X1.2
X1.2
Other M/X flares that day
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 02:00 | 02:13 | 22 | M4.9 | – | – | |
| 09:54 | 09:56 | 6 | M1.0 | – | – | |
| 11:47 | 11:58 | 19 | M1.6 | – | – | |
| 16:18 | 16:35 | 32 | M1.0 | – | – |
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.
← M7.5 2025-02-07X1.1 2025-03-28 →
About this page
A X1.9 flare that began 2025-02-23 19:22 UTC; No. 4 of 3,004 C-class-or-larger flares in 2025.