While it’s mostly cloudy at my domicile, the sky above yours may be clear. If you live in the northern U.S. and southern Canada, take a look at the northern sky this early morning April 12. There’s a decent chance you might see the aurora borealis.
The Kp index shot up to “5” or moderate storm Friday evening when the interplanetary magnetic field bundled up in the sun’s wind took a sharp dip southward. This usually allows the sun’s charged particles to enter Earth’s magnetic domain and spiral down into the upper atmosphere to spark auroras.
Both the Ovation Auroral oval map and the POES satellite map of the auroral oval – that band of aurora around either pole – show it spreading southward with the visibility line crossing into northern Minn. and North Dakota.
Time lapse aurora near Fairbanks, AK. on March 26, 2014
There’s no guarantee activity will continue through the early morning hours but as of 1 a.m today (April 12) things look promising. We do have a moon tonight which could hamper viewing of faint auroras, but it’s no match for moderate to strong displays.
No matter what, it’s worth a look if you happen to be up late. Beleaguered by clouds like me? You can still enjoy this sweet video of northern lights made by Ohio astrophotographer John Chumack.