Coronal hole stream, G1 geomagnetic storm

Monday, 29 December 2014 - 19:39 UTC

Coronal hole stream, G1 geomagnetic storm

Solar activity is low right now with no sunspot regions of interest on the disk. Geomagnetic activity however has reached the G1 minor geomagnetic storm level today all thanks to the onset of a coronal hole high speed stream.

This enhanced solar wind stream is now reaching over 600km/s which is a moderately high speed. This stream is likely coming from a large southern hemisphere coronal hole which will continue to influence earth for days to come as it is a large coronal hole that stretches well east of the central meredian right now.

The direction of the IMF (Bz) is variable but more periods of active (Kp4) to minor G1 (Kp5) geomagnetic storm conditions should not be ruled out if the direction of the IMF turns south. The solar wind speed is high enough to push us back up into the G1 range but it is vital that the direction of the IMF (Bz) goes southward. Aurora watchers in Scandinavia, Finland, Scotland and around the US-Canadian border should remain alert for possible auroral displays.

Image: NASA SDO.

Thank you for reading this article! Did you had trouble with some of the technical terms used in this article? Our help section is the place to be where you can find in-depth articles, a FAQ and a list with common abbreviations. Still puzzled? Just post on our forum where we will help you the best we can! Never want to miss out on a space weather event or one of our news articles again? Subscribe to our mailing list, follow us on Twitter and Facebook and download the SpaceWeatherLive app for Android and iOS!

Latest news


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!


Space weather facts

Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2019/10/26Kp5 (G1)
Number of spotless days in 2019:240
Current stretch spotless days:14

This day in history*

Solar flares
*since 1994

Social networks