Solar flares — Apr 28, 2026
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The strongest solar flare in the day
Flare of M1.5 level (strong) — in 14:53
Solar activity index
Value for Apr 28, 2026 24:00 (end on the day). The maximum value is 10.0
Solar flares in 2 days
Chart of solar activity from Apr 27, 2026 to Apr 28, 2026
Time zone — UTC+01 (London) - summer time
This chart in PNG format — high resolution
API data: JSON or TXT
List of solar flares for Apr 28, 2026
Total number of flares of class C and higher — 19 flares
C type — 16 | M type — 3 | X type — 0
| start | maximum | end | region | |
|---|---|---|---|---|
|
C2.5
|
20:49 | 20:53 | 20:55 | 4428 |
|
C8.1
|
19:43 | 19:49 | 19:53 | 4425 |
|
C5.2
|
19:10 | 19:32 | 19:43 | 4425 |
|
C2.7
|
17:01 | 17:08 | 17:11 | 4420 |
|
C4.2
|
16:49 | 16:53 | 16:55 | 4420 |
|
C2.6
|
15:30 | 15:33 | 15:36 | 4420 |
|
M1.1
|
15:03 | 15:07 | 15:09 | 4420 |
|
M1.5
|
14:49 | 14:53 | 14:55 | 4420 |
|
M1.0
|
13:17 | 13:23 | 13:29 | 4420 |
|
C7.7
|
13:00 | 13:14 | 13:17 | 4420 |
|
C9.3
|
12:41 | 12:46 | 12:48 | 4420 |
|
C3.1
|
12:12 | 12:18 | 12:21 | 4420 |
|
C7.1
|
10:28 | 10:32 | 10:41 | 4420 |
|
C9.0
|
10:14 | 10:23 | 10:26 | 4420 |
|
C6.0
|
09:09 | 09:17 | 09:22 | 4420 |
|
C1.6
|
05:58 | 06:06 | 06:10 | 4424 |
|
C2.7
|
02:22 | 02:32 | 02:49 | 4425 |
|
C2.3
|
01:54 | 02:03 | 02:10 | 4425 |
|
C5.4
|
00:06 | 00:13 | 00:16 | 4420 |