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M8.9 solar flare on 2025-05-25
ClassM8.9GOES-18 science data
Peak16:302025-05-25 UTC
Duration18 min
Peak flux8.9e-05W/m²
| Comparison | Value |
|---|---|
| Rank in year | 19 / 3004 |
| Other M/X flares that day | 3 |
| M/X flares that month | 23 |
| 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 |
|---|---|---|---|---|---|---|
| 01:40 | 01:52 | 17 | X1.1 | – | – | |
| 06:28 | 06:35 | 10 | M1.7 | – | – | |
| 10:05 | 10:18 | 20 | M3.4 | – | – |
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.
← X1.1 2025-05-25M8.1 2025-05-30 →
About this page
A M8.9 flare that began 2025-05-25 16:18 UTC; No. 19 of 3,004 C-class-or-larger flares in 2025.