THE SOLAR WIND HAS ARRIVED: Earth is entering a stream of solar wind flowing from a large hole in the sun’s atmosphere. First contact with the stream on Dec. 1st prompted an outburst of auroras over Sweden so bright that automated webcams in Abisko National Park were nearly saturated:
“Solar minimum may be here, but you would never know it looking at the sky on December 1st in Abisko,” says Chad Blakley of Lights over Lapland. “It was an impressive display.”
Around the Arctic Circle, more auroras are in the offing. Earth is moving deeper into the stream, and NOAA forecasters say there is 70% chance of minor G1-class geomagnetic storms on Dec. 2nd.