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Weather across the nation: 8/9/12

4:15 PM, Aug 9, 2012   |    comments
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Severe thunderstorms developed across the East today as a low pressure system moved over the Mississippi River Valley.

Flow around this system created a warm front that extended up the Ohio River Valley, and produced showers and thunderstorms across the Great Lakes and extreme Northeast. At the same time, a cold front moved over the Mid-Mississippi River Valley, into the Tennessee Valley.

Abundant moisture fed into this system from the Gulf of Mexico, thus, moderate to heavy showers and thunderstorms developed. Storms have turned severe from the Northeast through the Southeast with multiple reports of damaging winds and large hail. Behind this system to the north, another weaker cold front dropped into the Upper Midwest and triggered more thunderstorm activity for Minnesota, Wisconsin, and the Upper Peninsula of Michigan.

Meanwhile in the South, the tail end of a frontal boundary lingered over the Gulf coast. This system allowed for more showers and thunderstorms to develop from southern Louisiana through northern Florida. Heavy rains developed along this front but severe storms have not been reported.

Out West, hot temperatures persisted in most areas as a strong ridge of high pressure dominated. This maintained offshore flow which allowed for sunny and hot conditions to continue. High temperatures surpassed 110 degrees across the deserts of California, Arizona, and Nevada.

THURSDAY'S WEATHER EXTREMES:

HIGHEST TEMPERATURE (DEGREES F).........................108 Lawton, Okla.

HIGHEST HEAT INDEX (DEGREES F)..........................115 Imperial, Calif.

LOWEST TEMPERATURE (DEGREES F)..........................36 Meacham, Ore.

LOWEST WIND CHILL (DEGREES F)...........................28 Mekoryuk, Alaska.

HIGHEST WIND GUST (MPH).................................61 Knoxville, Tenn.

HIGHEST PRECIPITATION (INCHES)..........................3.42 Crestview, Fla.

ON THIS DATE: Lightning caused several injuries on this date in 1980. Two West Virginian golfers were injured by lightning, while a third person standing between them was uninjured. A dozen people attending a prayer service in Bluefield, W. Va. were also injured by lightning.

The Associated Press

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