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Solar flares — September 15, 2025

September 15, 2025

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Lansing
Home Solar flares September 15, 2025

Solar flares on September 15, 2025

The most powerful solar flare in 24 hours

C3.5 (normal) flare - September 15 at 2:31 PM

Solar activity index

Value as of the end of the day on September 15, 2025

Solar activity index

Solar X-ray emission over the past 2 days

Chart of solar X-ray emission (1-8 Å) from September 14, 2025 to September 15, 2025

Time zone — UTC-04 (Lansing) — summer time

Solar flares
PNG API: JSON | TXT

List of solar flares for September 15, 2025

The total number of solar flares of class C and higher — 9 flares

C class — 9 | M class — 0 | X class — 0

Class begin max end region
C1.8 22:54 23:04 23:09 4217
C1.4 17:04 17:08 17:10 4217
C1.3 16:54 17:01 17:04 4217
C3.5 14:23 14:31 14:46 4213
C1.6 09:10 09:17 09:22 4213
C1.4 07:32 07:39 07:45 4213
C2.1 05:52 05:55 06:00 4216
C2.1 04:14 04:21 04:28 4217
C1.6 03:02 03:09 03:21 4217