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Solar flares in May 2003
C-class89
M-class8
X-class3
LargestX3.62003-05-28
Sunspot number89.6NOAA SWPC
Flares per day (C and above)
M/X flares per day
Same month a year earlier
| Month | C | M | X | Largest |
|---|---|---|---|---|
| May 2002 | 212 | 14 | 1 | X2.1 |
| May 2003 | 89 | 8 | 3 | X3.6 |
Top 15 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 2003-05-28 | 00:17 | 00:27 | 22 | X3.6 | – | – |
| 2003-05-27 | 22:56 | 23:07 | 17 | X1.3 | S07W17 | 10365 |
| 2003-05-29 | 00:51 | 01:05 | 21 | X1.2 | S06W37 | 10365 |
| 2003-05-31 | 02:13 | 02:24 | 27 | M9.3 | S07W65 | 10365 |
| 2003-05-29 | 19:28 | 19:37 | 15 | M2.8 | S35W13 | 10368 |
| 2003-05-26 | 05:34 | 05:50 | 28 | M1.9 | S09E12 | 10365 |
| 2003-05-27 | 05:06 | 06:26 | 130 | M1.6 | S07W14 | 10365 |
| 2003-05-29 | 02:09 | 02:18 | 15 | M1.5 | S37E03 | 10368 |
| 2003-05-27 | 02:40 | 03:06 | 41 | M1.4 | S07W03 | 10365 |
| 2003-05-02 | 02:47 | 03:08 | 57 | M1.0 | S15W22 | 10345 |
| 2003-05-26 | 16:22 | 16:37 | 29 | M1.0 | – | 10365 |
| 2003-05-27 | 03:38 | 03:46 | 14 | C8.9 | S07W13 | 10365 |
| 2003-05-30 | 06:39 | 06:50 | 17 | C8.6 | S05W55 | 10365 |
| 2003-05-28 | 04:43 | 04:47 | 8 | C7.6 | – | – |
| 2003-05-26 | 17:02 | 17:44 | 79 | C7.4 | S05W08 | 10365 |
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
100 flares of class C or larger in May 2003; by M/X count it ranks 228 of 565 months.