Viewing archive of Sunday, 21 April 2002

Sunspot numberNew regionsBackground fluxCX
1602C1.341

Solar flares

Region Start Maximum End
9906 X1.5 00:43 01:51 02:38
- C7.9 17:25 17:30 17:33
- C8.3 17:37 18:06 18:24
- C2.9 20:11 20:16 20:18
- C3.4 21:51 21:56 21:58

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

Latest news

Today's space weather

Auroral activity Minor Severe
High latitude 20% 15%
Middle latitude 5% 1%
Predicted Kp max 3
Solar activity
M-class solar flare 1%
X-class solar flare 1%
Moon phase
Waning Crescent

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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
Current stretch spotless days:2

This day in history*

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*since 1994