Viewing archive of Tuesday, 21 August 2001

Sunspot numberNew regionsBackground fluxCM
169 -31 -1C1.161

Solar flares

Region Start Maximum End
- C3.0 00:10 00:18 00:28
9585 C1.3 01:56 02:00 02:06
- C1.9 03:31 03:37 03:46
- C1.6 07:21 07:48 08:13
- C2.7 10:35 13:03 14:34
- C1.9 20:52 20:57 21:02
- M1.5 21:51 21:57 22:00

<< Go to daily overview page

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

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:2018/11/05Kp6 (G2)
Number of spotless days in 2018:190
Last spotless day:2018/11/11

This day in history*

Solar flares
12014M5.7
21999M3.8
31999M3.0
41999M2.3
51999M2.0
ApG
1200341G1
2201420
3201714
4199914
5201512
*since 1994

Social networks