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Astro Bob

Tonight’s Aurora Is On Schedule … So Far

27 Sep 2019, 22:40 UTC
Tonight’s Aurora Is On Schedule … So Far
(200 words excerpt, click title or image to see full post)

This is the forecast showing the extent of the auroral oval around 5:22 p.m. Central Time this afternoon. The most expansive section of the oval sits at 2 o’clock (upper right). That part will sag over southern Canada and perhaps the northern U.S. around 1 a.m. local time tomorrow morning. If you are under or even some distance south of its edge, you will see the aurora. Right now, the view from Iceland must be amazing. Click the image to see the current oval. NOAA
Things are heating up! The Kp index indicates a minor geomagnetic storm already underway as of 5 p.m. Central Time. Were it night here in northern Minnesota I’m sure we’d be greeted with a throbbing green arc draped over the northern horizon. Let’s hope the action continues into the night. The current forecast still calls for a moderate G2 geomagnetic storm which usually means northern lights visible as far south as the Midwestern states. Skywatchers in Iceland, northern Scotland and Scandinavia should be seeing activity right now.
The Kp index, a guide to magnetic activity high in Earth’s atmosphere, hit 5 around 4 p.m. Central Time today. A “5” indicates minor storm conditions. Kp indices ...

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