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Weather across the nation: 8/17/12

3:39 PM, Aug 17, 2012   |    comments
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Showers and thunderstorms developed across the Southern and Eastern US on Friday.

A low pressure system moving through Canada continued to push a cold front southeastward through the Eastern US. This front extended from the Northeast, down the Ohio River Valley, and into the Lower Mississippi River Valley.

Moisture poured in ahead of this system from the Gulf of Mexico and kicked up severe weather across the Tennessee Valley and Lower Mississippi River Valley. Lighter and more widespread showers and thunderstorms popped up across the Ohio River Valley and Northeast.

Strong winds, hail, and periods of heavy rainfall have been reported across the Tennessee Valley. Winds gusts up to 63 mph were reported in Monroe, Louisiana, while 2.96 inches of rain was reported in Barksdale, Louisiana. Rainfall totals along the northern side of this system remained under an inch.

Behind this system, a ridge of high pressure continued to build across the Plains and Midwest. This allowed for flow from the north to continue, which pulled cooler air in from Canada. Highs ranged in the 70s and 80s across the region.

Meanwhile, out West, monsoonal moisture lingered over the Southwest. This allowed for more showers and thunderstorms to develop across Arizona, New Mexico, and parts of California. Severe storms were not anticipated in these areas.

FRIDAY'S WEATHER EXTREMES:

HIGHEST TEMPERATURE (DEGREES F).........................100 Corpus Christi, Texas

HIGHEST HEAT INDEX (DEGREES F)..........................112 Ellington Field, Texas

LOWEST TEMPERATURE (DEGREES F)..........................32 West Yellowstone, Mont.

LOWEST WIND CHILL (DEGREES F)...........................32 Pinedale, Wyo.

HIGHEST WIND GUST (MPH).................................88 Sparta, Tenn.

HIGHEST PRECIPITATION (INCHES)..........................2.96 Barksdale AFB, La.

ON THIS DATE....... Hurricane Camille collided with the Mississippi coast on this date in 1969, becoming the second most destructive hurricane in U.S. history. The storm packed winds up to 190 mph near Bay Saint Louis, MS while claiming 256 lives. Some ships were even carried 7 miles inland by the hurricane.

The Associated Press

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