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X4.0 solar flare on 2025-11-14
ClassX4.0GOES-18 science data
Peak08:302025-11-14 UTC
Duration56 min
Peak flux4.0e-04W/m²
| Comparison | Value |
|---|---|
| Rank among X flares (since Jun 2017) | 13 / 108 |
| Rank in year | 2 / 3004 |
| Other M/X flares that day | 3 |
| M/X flares that month | 30 |
| 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 |
|---|---|---|---|---|---|---|
| 07:11 | 07:39 | – | M1.8 | – | – | |
| 20:04 | 20:12 | 12 | M1.3 | – | – | |
| 21:22 | 21:31 | 12 | M1.3 | – | – |
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.
← X5.1 2025-11-11M5.9 2025-11-28 →
About this page
A X4.0 flare that began 2025-11-14 07:44 UTC; No. 2 of 3,004 C-class-or-larger flares in 2025.