G2 (Moderate) geomagnetic storm conditions were observed at 14:54 UTC (9:54 A.M. CT) and 19:57 UTC (2:57 P.M. CT) on 16 July due to continued activity from a coronal mass ejection that arrived earlier in the day. The G2 Warning has been extended and is now valid until 03:00 UTC on 17 July.
The Aurora Borealis phenomenon -- also known as the Northern Lights -- may be visible "as low as New York to Wisconsin to Washington State,"
-- NOAA's Space Weather Prediction Center
The Northern Lights may be visible in latitudes as low as locations in New York, northern Ohio, northern Pennsylvania, northern Illinois and Wisconsin and state in between to Washington State according to the 3-day forecast model from NOAA's Space Weather Prediction Center.
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http://www.arlingtoncardinal.com/?s=Visible+Northern+Lights+Possible+In+Northern+Illinois+--+Especially+Until+About+1:00+Am
Aurora Borealis, Northern Lights, Space Weather Prediction Center
