Unexpected Geomagnetic Storm Could Disturb HF Bands, Enhance 6 Meters

[ARRL]

Spaceweather.com reports that a G2-class geomagnetic storm erupted during the early hours of January 7, sparking bright auroras around the Arctic Circle. “The interplanetary magnetic field (IMF) near Earth tipped south, opening a crack in our planet's magnetosphere,” Spaceweather explained. “Solar wind poured in to fuel the storm.”

With the A index at 20 and the K index at 7 (as of 1430 UTC), HF...

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