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M9.9 solar flare on 2024-07-28
ClassM9.9GOES-16 science data
Peak01:572024-07-28 UTC
Duration7 min
Peak flux9.9e-05W/m²
| Comparison | Value |
|---|---|
| Rank in year | 51 / 3708 |
| Other M/X flares that day | 6 |
| M/X flares that month | 96 |
| 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 |
|---|---|---|---|---|---|---|
| 01:39 | 01:51 | – | M7.8 | – | – | |
| 03:37 | 03:48 | 25 | M1.5 | – | – | |
| 10:27 | 10:42 | 26 | M7.7 | – | – | |
| 12:43 | 12:50 | 11 | M2.6 | – | – | |
| 18:08 | 18:26 | 31 | M1.3 | – | – | |
| 20:25 | 20:36 | 23 | M1.9 | – | – |
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.
← M7.8 2024-07-28M7.7 2024-07-28 →
About this page
A M9.9 flare that began 2024-07-28 01:53 UTC; No. 51 of 3,708 C-class-or-larger flares in 2024.