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Dangerous Cold Weather for Most of the Country; Rare Winter Storm for the South; Fire Weather Concerns for Southern California

Arctic air will filter south and east through early this week. As this cold air moves across the South, a rare winter storm is forecast to develop from Texas, Gulf Coast States into the Southeast through early this week. Several new daily record low temperatures are expected, including new record-low maximum temperatures. For Southern California, fire weather concerns increase this week. Read More >

Overview

A cluster of strong storms over southern lake Michigan, around 6 AM EDT, organized further as they tracked into northwest Indiana/southwest Michigan which prompted initial severe warnings based on deep cores (50dbz > 40kft) and emerging wind signatures. The most intense line segment peeled east-southeastward and hammered Elkhart, Kosciusko, and Whitley counties with widespread wind damage. An initial 70mph wind gust was recorded followed by a second 73 mph gust around 3 min later with a microburst core over Kosciusko County. The eastward leading convective line proved more vigorous as it aligned with the low-level shear vector and produced additional wind damage into northwest Ohio (Van Wert county). Additional intensification occurred to the west within the larger line segment with gusts 58-62 mph noted in AWOS METARS from Monticello east to Grissom Airports.

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A shelf cloud approaching Bluffton, IN. Via @jtinneywx
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