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Weather across the nation: 8/3/12

3:43 PM, Aug 3, 2012   |    comments
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The nation saw another active weather day as multiple weather features developed on Friday.

A trough of low pressure dipped into the Northern High Plains from central Canada. This system created a series of frontal boundaries that produced moderate to heavy showers and thunderstorms from central Montana through the Dakotas. The system advanced eastward throughout the day and reached into the Upper Midwest.

There was a slight chance of severe weather development across the eastern Dakotas, Minnesota, and Nebraska, but severe storms have not yet been reported. Strongest winds were reported in Valentine, Neb., with gusts up to 50 mph. To the south, scattered showers and thunderstorms developed from the Central and Southern Plains through the Tennessee and Ohio Valleys, as a few waves of low pressure moved through the region.

These storms also had a slight chance of severe weather development across Mississippi and Arkansas. Main threats in these areas were strong winds and large hail, with possibly a tornado or two. Farther south, a tropical wave of low pressure over the Bahamas pushed abundant moisture into Florida as it slowly approached from the east.

This created heavy rains and strong winds for most of Florida. Midday total rainfall reached up to 1.73 inches in Opa Locka, Fla. Meanwhile, in the West, monsoonal moisture over the Southwest maintained shower and thunderstorm activity across Arizona, New Mexico, and into the Central Rockies and Great Basin.

FRIDAY'S WEATHER EXTREMES:

HIGHEST TEMPERATURE (DEGREES F).........................111 Hobart, Okla.

HIGHEST HEAT INDEX (DEGREES F)..........................114 Beaufort, N.C.

LOWEST TEMPERATURE (DEGREES F)..........................33 Stanley, Idaho

LOWEST WIND CHILL (DEGREES F)...........................28 Cold Bay, Alaska

HIGHEST WIND GUST (MPH).................................66 Harrisburg, Pa.

HIGHEST PRECIPITATION (INCHES)..........................1.74 Opa Locka, Fla.

ON THIS DATE....... In 3 hours on this date in 1898, 5.84 inches of rain fell on Philadelphia. The force of the accumulated runoff on the hydraulic pressure in city sewers caused overflows via toilets, basins, and sinks.

The Associated Press

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