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Solar flares in May 2004
C-class53
M-class1
X-class0
LargestM2.62004-05-21
Sunspot number77.3NOAA SWPC
Flares per day (C and above)
M/X flares per day
Same month a year earlier
| Month | C | M | X | Largest |
|---|---|---|---|---|
| May 2003 | 89 | 8 | 3 | X3.6 |
| May 2004 | 53 | 1 | 0 | M2.6 |
Top 15 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 2004-05-21 | 23:35 | 23:52 | 24 | M2.6 | S10E54 | 10618 |
| 2004-05-01 | 15:26 | 15:36 | 19 | C9.5 | S11W30 | 10601 |
| 2004-05-02 | 11:06 | 11:19 | 30 | C8.3 | S10W42 | 10601 |
| 2004-05-13 | 13:24 | 13:34 | 16 | C7.7 | S02E29 | 10609 |
| 2004-05-17 | 04:11 | 04:17 | 11 | C7.0 | S06W80 | 10614 |
| 2004-05-31 | 00:07 | 00:28 | 53 | C6.5 | S10W73 | 10618 |
| 2004-05-02 | 03:25 | 03:51 | 37 | C5.4 | S11W37 | 10601 |
| 2004-05-24 | 10:53 | 11:04 | 25 | C4.6 | S11E18 | 10618 |
| 2004-05-15 | 16:03 | 16:22 | 25 | C4.4 | – | 10609 |
| 2004-05-28 | 10:03 | 10:11 | 10 | C4.1 | S11W44 | 10618 |
| 2004-05-31 | 10:30 | 10:36 | 10 | C3.8 | S11W85 | 10618 |
| 2004-05-20 | 17:14 | 17:19 | 9 | C3.7 | S15E78 | 10618 |
| 2004-05-18 | 08:12 | 08:27 | 37 | C3.2 | N15E48 | 10615 |
| 2004-05-23 | 14:37 | 14:52 | 36 | C2.9 | S11E29 | 10618 |
| 2004-05-01 | 13:43 | 13:55 | 19 | C2.8 | S10W31 | 10601 |
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
54 flares of class C or larger in May 2004; by M/X count it ranks 427 of 565 months.