Viewing archive of Monday, 21 January 2002

Sunspot numberNew regionsBackground fluxMaximum fluxC
187 -250 -4C1.1C3.547

Solar flares

RegionStartMaximumEnd
9788C1.7 01:3501:3901:49
9788C3.4 03:2203:2903:38
9785C1.6 05:3605:3905:41
9789C1.7 07:4107:4707:53
9791C1.7 18:1518:1918:21
-C2.2 21:2621:3721:44
9791C3.5 22:2922:3322:42

<< 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:2019/08/05Kp5 (G1)
Number of spotless days in 2019:161
Current stretch spotless days:16

This day in history*

Solar flares
11998M9.0
22005M5.6
32002M5.4
42015M3.5
52005M2.6
ApG
1200346G2
2200623G1
3200119
4201717G1
5199817
*since 1994

Social networks