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Solar flares — September 18, 2001

September 18, 2001

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Solar flares on September 18, 2001

The most powerful solar flare in 24 hours

M1.4 (strong) flare - September 18 at 12:07 PM

Solar activity index

Value as of the end of the day on September 18, 2001

Solar activity index

Solar X-ray emission over the past 2 days

Chart of solar X-ray emission (1-8 Å) from September 17, 2001 to September 18, 2001

Time zone — UTC-05 (Springfield) — summer time

Solar flares
PNG API: JSON | TXT

List of solar flares for September 18, 2001

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

C class — 9 | M class — 3 | X class — 0

Class begin max end region
C3.3 22:38 22:43 22:55 9628
C4.9 15:44 15:48 15:51
C5.6 14:53 14:57 15:00
C4.1 14:20 14:25 14:29
C3.7 13:42 13:45 13:48
C6.4 12:19 12:23 12:27
M1.4 12:02 12:07 12:09 9628
M1.0 10:49 10:52 10:54
M1.3 10:31 10:38 10:43 9620
C6.9 09:38 09:41 09:45
C7.3 01:25 01:28 01:31
C6.4 01:13 01:18 01:23