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A p.m. t-storm in spots
Showers and a heavier t-storm
Cooler with a stray shower
of sunlight, then sets at
of moolight, then sets at
As temperatures rise in time for the weekend, thunderstorms will also roll into the area. more >
Dec 20, 2012; 5:00 AM ET
The 540 line is often used by meteorologists to determine the chances of rain vs. snow.