Northern lights at Grotta

The beautiful Northern Lights were seen at Grótta just after midnight on August 18. It can therefore be said that the season is off to a great start.

Next week should give massive displays, but a large coronal halo that covers about 20-25% of the Sun’s circumference is now pointing at Earth. The current from it should hit the Earth’s magnetosphere within 2-3 days or around August 20. That stream could last for quite a few days given the volume.

The picture above was taken by Björgvin Kristinsson at Grótta on August 18, 2018 just after midnight, but in the picture below you can see the extent of the Corona Geil, which will send us a lot of material to the Northern Lights almost throughout the month.

The picture shows the extent of the coronal horn. The gaseous Sun rotates around itself in about 25 days at the equator but more slowly at the poles. The current from this wave could therefore last for about 5-7 days.