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M6.3 solar flare on 2025-06-16
ClassM6.3GOES-18 science data
Peak09:382025-06-16 UTC
Duration31 min
Peak flux6.3e-05W/m²
| Comparison | Value |
|---|---|
| Rank in year | 34 / 3004 |
| Other M/X flares that day | 3 |
| M/X flares that month | 19 |
| 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 |
|---|---|---|---|---|---|---|
| 04:08 | 04:23 | 35 | M1.8 | – | – | |
| 11:27 | 11:39 | 16 | M1.4 | – | – | |
| 14:43 | 14:55 | 20 | M1.1 | – | – |
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.
← M8.4 2025-06-15X1.2 2025-06-17 →
About this page
A M6.3 flare that began 2025-06-16 09:17 UTC; No. 34 of 3,004 C-class-or-larger flares in 2025.