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Solar flares in April 1990
C-class168
M-class21
X-class3
LargestX2.21990-04-16
Flares per day (C and above)
M/X flares per day
Same month a year earlier
| Month | C | M | X | Largest |
|---|---|---|---|---|
| April 1989 | 123 | 13 | 1 | X3.5 |
| April 1990 | 168 | 21 | 3 | X2.2 |
Top 15 flares
| Date | Begin | Peak | Min | Class | Location | Region |
|---|---|---|---|---|---|---|
| 1990-04-16 | 06:30 | 06:36 | 62 | X2.2 | S13E41 | 6021 |
| 1990-04-15 | 02:55 | 02:55 | 50 | X1.4 | N32E57 | 6022 |
| 1990-04-03 | 17:05 | 17:22 | 73 | X1.0 | N23E82 | 6007 |
| 1990-04-03 | 08:16 | 08:42 | 89 | M7.3 | – | – |
| 1990-04-04 | 13:15 | 13:18 | 126 | M7.1 | N22E72 | 6007 |
| 1990-04-13 | 21:16 | 21:24 | 29 | M4.9 | S34E43 | 6018 |
| 1990-04-01 | 05:55 | 06:02 | 19 | M4.1 | S17W90 | 5987 |
| 1990-04-05 | 13:35 | 13:45 | 60 | M3.2 | N23E62 | 6007 |
| 1990-04-12 | 02:49 | 02:59 | 26 | M3.2 | – | – |
| 1990-04-21 | 06:44 | 06:49 | 87 | M2.3 | S14W20 | 6021 |
| 1990-04-21 | 07:16 | 07:26 | 55 | M2.3 | S14W20 | 6021 |
| 1990-04-16 | 00:39 | 00:41 | 21 | M2.0 | S31E17 | 6018 |
| 1990-04-02 | 17:04 | 17:06 | 35 | M1.8 | N21E39 | 6001 |
| 1990-04-08 | 03:44 | 04:02 | 90 | M1.5 | N24E29 | 6007 |
| 1990-04-18 | 03:32 | 04:01 | 89 | M1.5 | S32W09 | 6018 |
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
192 flares of class C or larger in April 1990; by M/X count it ranks 135 of 565 months.