Guess what? Exactly! Magnetic fields in the solar winds are once again favorable for firing up auroras tonight. Although it’s overcast in Duluth, we’ve had one report of patchy northern lights from western Wisconsin, and a minor G1 magnetic storm is in progress.
The auroral oval, a permanent ring of aurora centered on Earth’s geomagnetic poles, has expanded southward in the past couple hours. Observers with clear skies should check the northern sky overnight for rays and arcs as the line of visibility has now crossed into the northern U.S.
UPDATE 12:30 a.m. CST: Kp=6 / We now have a G2 moderate geomagnetic storm underway.