Solar flares — Oct 17, 2025
The strongest solar flare in the day
Flare of M1.5 level (strong) — in 02:28
Solar activity index
Value for Oct 17, 2025 24:00 (end on the day). The maximum value is 10.0
Solar flares in 2 days
Chart of solar activity from Oct 16, 2025 to Oct 17, 2025
Time zone — UTC+01 (London) - summer time
This chart in PNG format — high resolution
API data: JSON or TXT
List of solar flares for Oct 17, 2025
Total number of flares of class C and higher — 12 flares
C type — 5 | M type — 7 | X type — 0
| start | maximum | end | region | |
|---|---|---|---|---|
|
M1.1
|
19:55 | 20:05 | 20:12 | 4246 |
|
M1.2
|
17:47 | 17:58 | 18:08 | 4246 |
|
M1.3
|
17:14 | 17:32 | 17:47 | 4246 |
|
M1.0
|
15:22 | 15:32 | 15:36 | 4246 |
|
M1.1
|
13:27 | 13:45 | 14:01 | 4246 |
|
C6.1
|
13:02 | 13:06 | 13:17 | 4246 |
|
C7.2
|
11:42 | 11:46 | 11:49 | 4246 |
|
C6.5
|
11:30 | 11:37 | 11:42 | 4246 |
|
C6.7
|
11:14 | 11:20 | 11:30 | 4246 |
|
C8.0
|
06:48 | 06:54 | 06:57 | 4248 |
|
M1.5
|
02:15 | 02:28 | 02:40 | 4246 |
|
M1.0
|
00:12 | 00:19 | 00:28 | 4246 |