Solar Flare WatchHome › Flare history › 2009
Solar flares in July 2009
C-class2
M-class0
X-class0
LargestC2.72009-07-05
Sunspot number5.1NOAA SWPC
Flares per day (C and above)
Top 15 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 2009-07-05 | 07:07 | 07:13 | 11 | C2.7 | S27W02 | 11024 |
| 2009-07-06 | 16:59 | 17:05 | 12 | C1.0 | S25W23 | 11024 |
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.
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About this page
2 flares of class C or larger in July 2009; by M/X count it ranks 524 of 565 months.