OF A BIG CORONAL HOLE: At the end of October, a hole in the sun's
atmosphere lashed Earth's magnetic field with solar wind, sparking
moderately-strong geomagnetic storms and almost a full week of Arctic
auroras. News flash: It's back. The same "coronal hole" is turning
toward Earth again. Forecasters expect the solar wind to reach Earth
during the late hours of Nov. 22nd with minor G1-class geomagnetic
storms possible on Nov. 23rd.