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Today's Weather Outlook

UPDATED 7 AM EDT, August 11, 2009

By WeatherBug's Stephen Baxter

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Stormy weather will threaten from the Northeast to the mid-Mississippi Valley and southern Plains today while the rest of the U.S. remains mainly dry. Thunderstorms in Florida and light rain the Pacific Northwest will be the other exceptions to mostly sunny, summer-like U.S. weather.

WeatherBug Meteorologist Rachel Peterson has today`s forecast in this exclusive WeatherBug National Outlook Video.

A cold front will slowly move east toward the Atlantic, moderating the oppressive heat in the mid-Atlantic and Northeast. Thunderstorms will accompany the front, fueled by the hot, humid air mass in place. Temperatures will pull back several degrees from Monday`s highs with 80s in southern New England giving way to temperatures near 90 degrees in Washington, D.C.

The same front will set off thunderstorms from the southern Ohio Valley through the southern Plains. Places that will see especially heavy rain and strong storms include Memphis, Tenn., Little Rock, Ark., and Oklahoma City. Large hail and damaging winds are possible in the strongest storms. Temperatures here will range from the mid-80s in the Ohio Valley to the mid and upper 90s in Oklahoma.

Only isolated thunderstorms are expected today from central Texas through the remainder of the Southeast. More numerous storms could dampen afternoon activities in the Florida Peninsula, where widespread low 90s are on tap. Highs in the 90s from the Carolinas to Louisiana are expected while much of Texas soars into triple-digits.

Dominating high pressure will make for a mostly sunny but warm day from the central and northern Plains through the Great Lakes. Warm 80s will prevail from Kansas City to Minneapolis, while hotter 90s bake the northern High Plains. A few cool 70s will hold in the Great Lakes, mainly near the water.

Light rain under mostly cloudy skies will linger today in the northwestern most corner of the U.S. The mercury will be stuck in the upper 60s near the Puget Sound including Seattle.

Hot and dry weather will remain in control elsewhere in the West with sunny 100s extending from Phoenix to Las Vegas. Temperatures over the century mark will also be felt in the hottest regions of interior California, while 90s will be commonplace through the Intermountain West`s valleys.

Be sure to keep your WeatherBug active to receive the latest weather in your neighborhood. Get the latest updates anywhere on Twitter at WeatherBug WeatherBuzz.

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