Viewing archive of Tuesday, 17 April 2012

Sunspot numberNew regionsBackground fluxMaximum fluxC
78 -82 1B2.9C1.30031

Solar flares

RegionStartMaximumEnd
-B5.3 03:0603:1303:23
1461C1.1 06:0608:0908:52
1455B7.6 11:1511:2911:50
1459B7.0 20:2520:3020:32
1455B9.7 22:0722:2522:38

<< 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 2019:211
Current stretch spotless days:13

This day in history*

Solar flares
12013M1.8
22013M1.3
32015M1.1
42002M1.0
52013C9.5
ApG
1200344G2
2199931G1
3201725G1
4200218
5201317
*since 1994

Social networks