The nation’s weather

Weather Underground Forecast for Friday, August 16, 2013.

Expect more showers and thunderstorms in the Southeast on Friday, while areas of storms persist for the center of the nation and scattered showers continue across the Pacific Northwest. In the South, a frontal boundary stalls over the Southeast and continues pulling moisture and energy in from the Gulf of Mexico. This will maintain shower and thunderstorm activity from the northern Gulf coast through the Carolinas and into the Virginias. At the same time, a tropical wave of low pressure developing in the Gulf of Mexico will continue moving northeastward towards Florida, bringing more moisture with showers and thunderstorms with it. This system currently has a medium, 50, chance of tropical cyclone development. For more information on this system, please see http://www.wunderground.com/tropical/.

Elsewhere, high pressure building across the Great Lakes, Midwest and Northeast will maintain dry and pleasant conditions. Expect high temperatures to remain in the 80s across most of the Midwest and Northeast. In the Plains, a trough of low pressure weakens as it continues sliding southeastward. This may allow for a few light showers and thunderstorms to develop over the southern Plains, but significant rainfall and strong storms are not anticipated. Out West, a low pressure system offshore of the Pacific Northwest will continue pulling Pacific moisture onshore. This will maintain scattered showers across Oregon and Washington through most of the day on Friday.

Temperatures in the Lower 48 states Thursday have ranged from a morning low of 32 degrees at West Yellowstone, Mont. to a high of 106 degrees at Needles, Calif.

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