Viewing archive of Thursday, 21 October 1999

Solar flares

RegionStartMaximumEnd
-C3.0 03:5604:1704:33
8737C1.9 06:2006:2506:30
8732C2.3 08:4108:5209:07
8739C2.1 10:0110:1110:15
-C1.8 12:2612:3412:45
-C3.5 13:3013:4513:55
8732C2.3 14:4614:5415:07
8739C2.3 18:5519:0219:05
-C4.1 19:0619:1019:20
-C3.0 19:2119:2619:36
-C6.1 19:5319:5519:57

<< 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 2019:158
Current stretch spotless days:13

This day in history*

Solar flares
11998X3.9
22002M3.1
31998M3.0
42004M3.0
52003M2.7
ApG
1200638G2
2200230G1
3201729G1
4199924
5200319G2
*since 1994

Social networks