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Solar flares — August 13, 2025

August 13, 2025

Today

UTC+00
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Solar flares on August 13, 2025

The most powerful solar flare in 24 hours

C4.1 (normal) flare - August 13 at 8:03 PM

Solar activity index

Value as of the end of the day on August 13, 2025

Solar activity index

Solar X-ray emission over the past 2 days

Chart of solar X-ray emission (1-8 Å) from August 12, 2025 to August 13, 2025

Time zone — UTC+00

Solar flares
PNG API: JSON | TXT

List of solar flares for August 13, 2025

The total number of solar flares of class C and higher — 12 flares

C class — 12 | M class — 0 | X class — 0

Class begin max end region
C4.1 19:57 20:03 20:05 4172
C3.2 18:11 18:19 18:25 4172
C1.8 17:55 18:01 18:04 4172
C1.5 15:58 16:01 16:04
C1.7 15:38 15:42 15:58
C2.6 14:46 14:56 14:59 4172
C1.8 14:28 14:35 14:46
C1.8 10:30 10:39 10:43 4180
C1.7 10:17 10:21 10:30 4172
C2.1 04:26 04:35 04:39 4178
C2.3 03:23 03:30 03:32 4178
C2.9 01:29 01:42 01:44 4178