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A p.m. t-storm in spots
A stray afternoon t-storm
Thunderstorms in the area tomorrow evening through Tuesday afternoon
Jul 12, 2014; 5:00 PM ET
Thunderstorms in the area Monday evening through Tuesday afternoon
Dec 20, 2012; 5:00 AM ET
The 540 line is often used by meteorologists to determine the chances of rain vs. snow.