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Weather across the nation: 8/1/12

4:46 PM, Aug 1, 2012   |    comments
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An active weather pattern developed across the nation on Wednesday as monsoonal activity continued in the West, frontal disturbances and low pressure trekked across the North, and a trough of low pressure lingered over the eastern third of the nation.
 
In the West, monsoonal moisture streamed inland from the southwest across southeastern California and the Four Corners through the day.

Ample moisture over these areas combined with waves of energy pushing through the region translated into areas of rain and thunderstorms during the afternoon. Flash Flood Watches remained in effect for areas from southeastern California and northwestern Arizona through southern Utah, while Flood Advisories were in effect for north-central Arizona and parts of western Colorado.
 
To the east of this activity, high pressure ridging continued over the south-central U.S. with scorching hot temperatures. Areas from the Southern and Central Plains through the western Tennessee Valley and the mid-South experienced daytime highs ranging from 100 to 110 degrees. A few showers and thunderstorms formed in the Mid-Mississippi Valley as disturbances from the West were guided through the Central Plains, but provided little relief from the heat. A variety of Heat Advisories and Excessive Heat Warnings remained in effect for the region.
 
To the north, frontal disturbances with low pressure supported showers and clusters of thunderstorms in the Northern High Plains and the Northern Plains. Areas from parts of the Central and Northern Plains into the Upper Mississippi Valley remained at slight risk of severe thunderstorms with severe wind and hail.
 
In the East, a trough of low pressure lingered over the eastern third of the nation and supported more showers and thunderstorms. Much of this weather activity was focused in the Southeast and Mid-Atlantic.
 
WEDNESDAY'S WEATHER EXTREMES:
 
HIGHEST TEMPERATURE (DEGREES F).........................113 Chandler, Okla.
 
HIGHEST HEAT INDEX (DEGREES F)..........................118 Cushing, Okla.
 
LOWEST TEMPERATURE (DEGREES F)..........................32 Truckee-Tahoe, Calif.
 
LOWEST WIND CHILL (DEGREES F)...........................29 Truckee-Tahoe, Calif.
 
HIGHEST WIND GUST (MPH).................................54 Oceana NAS, Va.
 
HIGHEST PRECIPITATION (INCHES)..........................1.11 Wilmington, N.C. 
 
ON THIS DATE....... On this date in 1983, President Ronald Reagan arrived at Andrews Air Force Base. Just 10 minutes after the landing, a wind gust of 149 mph in a microburst was recorded. Planes have been known to crash due to such high velocity wind gusts.

The Associated Press

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