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Solar flares — Sep 04, 2025

The strongest solar flare in the day

Flare of M1.0 level (strong) — in 14:44

Solar activity index

Value for Sep 04, 2025 24:00 (end on the day). The maximum value is 10.0

Solar activity index

Solar flares in 2 days

Chart of solar activity from Sep 03, 2025 to Sep 04, 2025

Time zone — UTC+01 (London) - summer time

Solar flares in 2 days
This chart in PNG format — high resolution API data: JSON or TXT

List of solar flares for Sep 04, 2025

Total number of flares of class C and higher7 flares

C type — 6 | M type — 1 | X type — 0

  start maximum end region
C2.9
22:34 22:44 22:53 4197
M1.0
14:36 14:44 14:49 4207
C2.5
14:19 14:26 14:36 4207
C2.8
11:48 11:55 11:59 4207
C2.1
10:15 10:24 10:32 4199
C9.2
06:22 06:32 06:37 4207
C2.5
01:30 01:37 01:47 4199