Viewing archive of Friday, 21 January 2000

Sunspot numberNew regionsBackground fluxMaximum fluxCM
144 252 1C1.3M1.4451

Solar flares

RegionStartMaximumEnd
-C5.8 01:3701:4101:45
-C6.7 05:0205:1005:15
-M1.4 06:3406:4806:58
-C3.5 08:1108:4508:54
8837C5.1 11:3311:4211:52
-C2.8 18:2018:2518:32

<< 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:2019/09/28Kp5 (G1)
Number of spotless days in 2019:210
Current stretch spotless days:12

This day in history*

Solar flares
11999X1.8
22014M2.2
32000M1.1
42014M1.1
52000C8.7
ApG
1200366G3
2200045G2
3199931G1
4201730G1
5200623
*since 1994

Social networks