Spacestorm continues tonight and tomorrow

There’s a small chance tonight and tomorrow night that you might see an aurora (i.e. “The Northern Lights“) here in Chicago. Clear skies would help, of course, and after that it’s up to timing and, literally, the alignment of the planets…

However, one crucial component to the storm is unknown: its magnetic orientation. If it lines up a certain way with Earth’s magnetic field, then the storm essentially pours into our upper atmosphere. If the alignment is otherwise, the storm can pass by the planet with fewer consequences. […] Now that sunspot number 930 has flared so significantly—after several days of being quiet—the forecast calls for a “reasonble chance” of more major flares in coming days, Kunches said.

Watch, as they say, the skies.
(via Making Light)

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