Viewing archive of Wednesday, 15 April 2015

Select the desired archive item

Coronal hole stream onset, G1 geomagnetic storm

Auroral activity has reached the minor G1 geomagnetic storm threshold during the past 24 hours thanks to a coronal hole high speed solar wind stream. The direction of the IMF (Bz) is pointing southward most of the time and this is causing enhanced auroral displays at high latitude locations. Auroral displays have been visible from many locations all over the world and in the northern hemisphere it was even seen as far south as Norfolk, England (!) where James Rowley-Hill took this amazing image that serves as our header. Fantastic!

Read more

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!

54%
Support SpaceWeatherLive with our merchandise
Check out our merchandise

Latest alerts

Get instant alerts!

Space weather facts

Last X-flare2024/05/06X4.4
Last M-flare2024/05/06M1.5
Last geomagnetic storm2024/05/02Kp7- (G3)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
April 2024136.5 +31.6
Last 30 days156.6 +63.6

This day in history*

Solar flares
12024X4.4
21998X3.81
31998M4.04
42015M2.81
52014M2.65
ApG
11988106G3
2196060G3
3198667G3
4194641G3
5197150G2
*since 1994

Social networks