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Solar flares in April 2003
C-class124
M-class14
X-class0
LargestM7.02003-04-26
Sunspot number114.3NOAA SWPC
Flares per day (C and above)
M/X flares per day
Same month a year earlier
| Month | C | M | X | Largest |
|---|---|---|---|---|
| April 2002 | 218 | 16 | 1 | X1.5 |
| April 2003 | 124 | 14 | 0 | M7.0 |
Top 15 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 2003-04-26 | 08:01 | 08:07 | 8 | M7.0 | – | 10338 |
| 2003-04-23 | 00:39 | 01:06 | 36 | M5.1 | N22W25 | 10338 |
| 2003-04-24 | 12:45 | 12:53 | 18 | M3.3 | N21W39 | 10338 |
| 2003-04-21 | 12:54 | 13:07 | 20 | M2.8 | N18E02 | 10338 |
| 2003-04-09 | 23:23 | 23:29 | 11 | M2.5 | S10W78 | 10326 |
| 2003-04-26 | 23:37 | 23:40 | 5 | M2.5 | – | 10338 |
| 2003-04-26 | 00:51 | 00:58 | 9 | M2.1 | N20W65 | 10338 |
| 2003-04-26 | 03:01 | 03:06 | 11 | M2.1 | N20W69 | 10338 |
| 2003-04-23 | 15:36 | 15:56 | 35 | M2.0 | N20W22 | 10338 |
| 2003-04-04 | 19:05 | 20:19 | 95 | M1.9 | – | 10324 |
| 2003-04-27 | 15:27 | 15:32 | 8 | M1.7 | N21W85 | 10338 |
| 2003-04-25 | 05:23 | 05:40 | 35 | M1.2 | N14E79 | 10346 |
| 2003-04-18 | 19:50 | 19:58 | 12 | M1.1 | – | 10337 |
| 2003-04-29 | 04:32 | 04:59 | 38 | M1.1 | S12W55 | 10337 |
| 2003-04-27 | 00:50 | 01:01 | 31 | C9.3 | N21W67 | 10338 |
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
138 flares of class C or larger in April 2003; by M/X count it ranks 196 of 565 months.