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Coronal hole faces Earth

A large southern extension of the northern hemisphere polar coronal hole is facing Earth today.

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M1.1 solar flare from behind the east limb

A huge surprise last evening as solar activity unexpectedly reached moderate level thanks to an M1.11 (R1-minor) solar flare that took place behind the east limb. The solar flare peaked at 23:28 UTC on 20 October 2017.

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Space weather facts

Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2020/02/19Kp5 (G1)
Number of spotless days in 2020:70
Current stretch spotless days:20

This day in history*

Solar flares
12001X1.7
22014X1.0
32001M2.1
42001M2.1
52001M1.6
ApG
1200337G1
2201328G1
3199928G2
4200122G1
5201720
*since 1994

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