Viewing archive of Sunday, 21 April 2002

Sunspot numberNew regionsBackground fluxMaximum fluxCX
160 -252 2C1.3X1.5441

Solar flares

RegionStartMaximumEnd
9906X1.5 00:4301:5102:38
-C7.9 17:2517:3017:33
-C8.3 17:3718:0618:24
-C2.9 20:1120:1620:18
-C3.4 21:5121:5621:58

<< Go to daily overview page

Latest news

Support SpaceWeatherLive.com!

A lot of people come to SpaceWeatherLive to follow the Sun's activity or if there is aurora to be seen, but with more traffic comes higher server costs. Consider a donation if you enjoy SpaceWeatherLive so we can keep the website online!

100%

Latest alerts

Get instant alerts!

Space weather facts

Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2019/07/10Kp5 (G1)
Number of spotless days in 2019:133
Last spotless day:2019/07/21

This day in history*

Solar flares
12002X4.8
22016M7.6
32016M5.5
42016M5.0
52004M2.2
ApG
1200452G2
2199840G1
3200023G2
4201521G1
5200217G1
*since 1994

Social networks