Thursday, August 15, 2013

National Weather Summary for August 15,2013,from weatherunderground.com

Weather Underground midday recap for Thursday,August 15,2013.

Multiple areas of active weather developed across the nation on Thursday. In the South, heavy rainfall developed along a cold front that stalled over the Southeast. Abundant moisture from the Gulf of Mexico fed energy into this system, which allowed for heavy rainfall and strong thunderstorms to develop from the northern Gulf coast through the Carolinas. Heaviest rainfall was reported at Mount Pleasant, South Carolina with a midday total of 2.17 inches of rain. Severe thunderstorms have not yet developed with this system.

Behind this activity in the Plains, a trough of low pressure over the northern High Plains slid southeastward toward the Mississippi River valley. This brought heavy rainfall and strong storms to the central and southern Plains. These areas were under a slight risk of severe thunderstorm activity with strong winds and large hail, but severe storms have not yet developed. Heaviest rainfall across the Plains reached up to 2.17 inches at Garrison, North Dakota.

Out West, weak monsoonal moisture over Arizona and New Mexico triggered scattered afternoon thunderstorms. Heavy rainfall has not developed in these areas. To the north, a low pressure system off the coast of the Pacific Northwest pushed a cold front eastward, which kicked up a few scattered showers over Washington and Oregon.

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