From the ABC 7 Weather team

Heat Advisory until 8 p.m. Tuesday and Wednesday for D.C.

May 31, 2011 - 06:26 PM
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Records have been tied and heat index values are making it feel like the 100 degree mark. Changes are on the way tomorrow with a cold front.

Overnight: Mostly Clear, Warm & Muggy

Lows: 70s | Wind: S 5 m.p.h.

Wednesday: Partly Cloudy, T-Storms Possible

Highs: Low to Mid 90s | Wind: SW 5-10 m.p.h.

Thursday: Mostly Sunny, Hot but Less Humid

Highs: Around 90 | Wind: NW 5-10 m.p.h.

A stagnant air mass sitting over the region is allowing for mostly sunny skies and hot temperatures in the 90s. Heat index values have been at or above 100 degrees over the past few hours, and a Heat Advisory continues until 8 p.m. tonight. Overnight, lows will only fall into the 70s under mostly clear skies.

On Wednesday, a cold front will move through in the early afternoon, bringing with it the chance for thunderstorms. A few storms may be severe with large hail and damaging wind gusts. Otherwise, temperatures will continue to be hot ahead of the front in the low to mid 90s. Another heat advisory is in effect for tomorrow as well.

Thursday and Friday will see improving conditions with lower levels of humidity but warm temperatures in the upper 80s to near 90 degrees. There is another chance for a few storms this weekend on Saturday with highs near 90. Sunday looks pleasant so far with highs in the upper 80s under partly cloudy skies.

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