The aurora and solar activity archive

Searching for historical solar and auroral activity data? The archive is filled with data between the year 1996 and yesterday.

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April 2019

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B7.6

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Space weather facts

Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2019/03/17Kp5 (G1)
Number of spotless days in 2019:62
Last spotless day:2019/04/06

This day in history*

Solar flares
12014M7.3
22016M6.7
32003M1.1
42002C9.4
52012C8.9
ApG
1200263G3
2200150G3
3199625G1
4200321
5199420
*since 1994

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