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Viewing archive of Tuesday, 21 April 2015

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Three M-class solar flares, CH effects, CME watch

Three low-level (R1) M-class solar flares took place today, all of them located at or near the east or west limb of our star.

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Current data suggest that it is not possible to see aurora now at middle latitudes

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Today's space weather

Auroral activity Minor Severe
High latitude 25% 35%
Middle latitude 10% 1%
Predicted Kp max 4
Solar activity
M-class solar flare 1%
X-class solar flare 1%
B6.2
Moon phase
Last Quarter

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Space weather facts

Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2017/12/05Kp5 (G1)
Number of spotless days in 2017:94
Last spotless day:2017/12/09

This day in history*

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32002C7.1
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52015C5.6
ApG
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2199833G1
3200521G1
4201519
5200716
*since 1994