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Solar flares — Jan 17, 2026

Yesterday

The strongest solar flare in the day

Flare of C4.7 level (normal) — in 02:46

Solar activity index

Value for Jan 17, 2026 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 Jan 16, 2026 to Jan 17, 2026

Time zone — UTC+00 (London)

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

List of solar flares for Jan 17, 2026

Total number of flares of class C and higher5 flares

C type — 5 | M type — 0 | X type — 0

  start maximum end region
C2.4
03:02 03:07 03:13 4341
C4.7
02:42 02:46 02:48 4341
C4.4
02:29 02:37 02:42 4341
C3.0
02:20 02:26 02:29 4343
C3.1
00:49 00:54 00:58 4343