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Solar flares in April 2005
C-class16
M-class0
X-class0
LargestC5.32005-04-26
Sunspot number41.5NOAA SWPC
Flares per day (C and above)
Same month a year earlier
| Month | C | M | X | Largest |
|---|---|---|---|---|
| April 2004 | 56 | 7 | 0 | M2.4 |
| April 2005 | 16 | 0 | 0 | C5.3 |
Top 15 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 2005-04-26 | 04:19 | 04:41 | 37 | C5.3 | S05E71 | 10756 |
| 2005-04-17 | 20:46 | 21:07 | 29 | C4.6 | S12E76 | 10755 |
| 2005-04-17 | 01:34 | 01:44 | 18 | C3.3 | S12E86 | 10755 |
| 2005-04-28 | 02:23 | 02:36 | 27 | C3.0 | S05E46 | 10756 |
| 2005-04-17 | 12:42 | 12:49 | 13 | C2.1 | S12E81 | 10755 |
| 2005-04-12 | 17:11 | 17:21 | 18 | C2.0 | N01E75 | 10752 |
| 2005-04-26 | 05:28 | 05:33 | 16 | C1.8 | S05E72 | 10756 |
| 2005-04-26 | 19:40 | 20:05 | 47 | C1.8 | S05E66 | 10756 |
| 2005-04-29 | 20:33 | 20:41 | 16 | C1.7 | – | 10756 |
| 2005-04-06 | 06:31 | 06:36 | 10 | C1.6 | S06W51 | 10747 |
| 2005-04-17 | 12:12 | 12:24 | 21 | C1.2 | N03E09 | 10752 |
| 2005-04-26 | 02:16 | 02:25 | 14 | C1.2 | S05E72 | 10756 |
| 2005-04-05 | 20:01 | 20:07 | 18 | C1.1 | S05W46 | 10747 |
| 2005-04-06 | 05:48 | 06:05 | 33 | C1.0 | S06W51 | 10747 |
| 2005-04-11 | 02:48 | 02:53 | 7 | C1.0 | S06W90 | 10751 |
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.
About this page
16 flares of class C or larger in April 2005; by M/X count it ranks 504 of 565 months.