GEOMAGNETIC STORM IN PROGRESS: A solar wind stream blowing faster than 700 km/s is lashing Earth's magnetic field on Aug. 31st. This has sparked a G2-class (moderately strong) geomagnetic storm. So far auroras have been observed in Iceland, Alaska, Finland, Wisconsin and Michigan--with more expected tonight if the storm continues. Visit Spaceweather.com for photos and updates.
Aurora alerts: Sign up for Spaceweather Alerts and get a text message when auroras appear in your area.
Above:Auroras Holidays is offering 10% off 2019-2020 autumn and winter aurora tour packages only for readers of Spaceweather.com. This offer is valid until Sept. 30, 2019.