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Associated Press

Posted on July 22, 2013 at 3:34 AM

Updated Monday, Jul 22 at 3:37 AM

Weather Underground Forecast for Monday, July 22, 2013.

Wet and unsettled weather will continue for the East on Monday. In the north, a low pressure system in southern Saskatchewan will continue eastward near the Canada-U.S. border through the day, becoming positioned just north of Lake Superior by the end of the day. As this system heads eastward, an associated warm front will extend through the Midwest into the Mid-Atlantic States, while the associated cold front trails across the Upper Midwest into the Central Plains. Strong to severe thunderstorms will become possible along and ahead parts off the cold front in the afternoon and evening hours. The Storm Prediction Center issued a slight risk of severe thunderstorm development for parts of the Upper Mississippi Valley and parts of the Central Plains and Mid-to Lower Mississippi Valleys with primary threats of damaging wind gusts and large hail. Meanwhile, numerous scattered showers and thunderstorms with periods of heavy rainfall are expect to the south of the warm front extending across the Ohio Valley into the Mid-Atlantic. A wave of low pressure along the boundary in the Mid-Atlantic will help produce more organized storms through the day.

Out West, monsoonal moisture will trigger showers and thunderstorms across much of the

Southwest and into portions of southern and central California and the central Great

Basin.

Temperatures in the Lower 48 states Sunday have ranged from a morning low of 32 degrees at Stanley, Idaho to a high of 99 degrees at China Lake, Calif.

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