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Weather across the nation: 9/7/12

4:47 PM, Sep 7, 2012   |    comments
  • Friday afternoon surface map
    
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A strong cold front moved across the Central U.S. on Friday and produced active weather from the Central Plains through the Great Lakes.

This system pulled warm air and moisture in from the Gulf of Mexico, which allowed for heavy rainfall and strong thunderstorms to develop across the Plains and the Midwest. Some of these storms turned severe with strong and damaging winds, heavy rainfall, and large hail.

Hail up to 1 inch in diameter was reported in Pekin, Illinois, and Anderson, Indiana, while multiple trees and power lines were blown down across northern Indiana and Ohio. Heaviest rainfall was reported at Iowa City, Iowa. with a midday total of 1.38 inches of rain.

The back side of this system allowed for significantly cooler temperatures to spread across the Northern U.S. as it pulled in cool air from Canada. High temperatures dropped by 10 to 15 degrees in some places of the Northern Plains and Upper Midwest. To the south, the tail end of a frontal boundary lingered over Florida.

This allowed for widespread showers and thunderstorms to develop across the state. Heaviest rainfall was reported in Opa Locka, Florida, with a midday total of 2.33 inches. In the northern Gulf of Mexico, an area of low pressure weakened but continued to kick up disorganized thunderstorm activity.

Out West, monsoonal moisture over the Southwest produced showers and thunderstorms across Arizona. Some storms stretched eastward into Colorado and New Mexico.

FRIDAY'S WEATHER EXTREMES:

HIGHEST TEMPERATURE (DEGREES F).........................107 Breckenridge, Texas

HIGHEST HEAT INDEX (DEGREES F)..........................118 Enid, Okla.

LOWEST TEMPERATURE (DEGREES F)..........................25 Stanley, Idaho

LOWEST WIND CHILL (DEGREES F)...........................20 Barter Island, Alaska

HIGHEST WIND GUST (MPH).................................63 Emporia, Kan.

HIGHEST PRECIPITATION (INCHES)..........................2.33 Opa Locka, Fla.

ON THIS DATE....... On this date in 1970, a bolt killed 2 football players and injured another 22 at Gibbs High School in St. Petersburg, Fla. All 38 players and 4 coaches on the field were knocked off their feet.

The Associated Press

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