Strong to severe storms are expected later Saturday afternoon into the overnight especially from central and eastern North Dakota into northern South Dakota and eventually far western Minnesota. High winds, large hail, and potentially a tornado or two will accompany these dangerous storms.
Instability is building just behind a warm front inching slowly eastward across the Northeast. Along and just behind this front will exist a threat for widely scattered severe storms this afternoon into this evening from eastern Pennsylvania into northern New Jersey and the Hudson Valley of New York. Gusty winds will fell trees, leading to scattered power outages.
Scattered storms will be likely for a large portion of the Midwest and Mid-Atlantic, from Missouri to Pennsylvania.
A long-lived squall line of severe storms has passed into the Ohio River Valley with clearing skies allowing the atmosphere to destabilize over the Upper Midwest. An approaching cold front will spark storm development shortly. Severe cells will be capable of producing damaging wind gusts to 65 mph, large hail to 1.5″ in diameter, and perhaps a tornado or two.
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