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Rain continues to soak southeast

3:54 PM, Jul 6, 2013   |    comments
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A stalled frontal boundary produced more rain for the Southeast and Eastern Valleys on Saturday, while showers and thunderstorms popped up across the Northern Plains and Upper Midwest.

A ridge of high pressure spinning in the Mid-Atlantic Ocean maintained northward flow for the East, which pushed ample moisture and energy in from the Gulf of Mexico. This allowed for heavy rainfall to persist with isolated thunderstorm activity from the panhandle of Florida through the Ohio River Valley.

Severe storms had not yet developed by midday on Saturday, but heavy rainfall associated with this system allowed for flooding to remain a concern for the East. Valparaiso, Fla., reported the heaviest rainfall for the region with a midday total of 3.44 inches.

Meanwhile in the North, a trough of low pressure moved off the Northern Rockies and into the Northern Plains early on Saturday. Counter-clockwise flow around this system pushed warm air northward, and created a warm front that extended eastward toward the Great Lakes.

This front kicked up scattered showers and thunderstorms across the Dakotas and Minnesota. With a cold front following closely behind, the region had a slight risk of severe thunderstorm development with strong winds and large hail likely, and possibly a tornado or two. However, severe storms have not yet been reported across the region.

In the West, temperatures continued to cool as onshore flow remained strong and high pressure shifted eastward over the Southern Rockies. Some limited monsoonal moisture allowed for a few scattered thunderstorms to develop over the Desert Southwest from Southern California through New Mexico.

SATURDAY'S WEATHER EXTREMES:

HIGHEST TEMPERATURE (DEGREES F).........................104 Glendale, Ariz.

HIGHEST HEAT INDEX (DEGREES F)..........................109 Naples, Fla.

LOWEST TEMPERATURE (DEGREES F)..........................34 Stanley, Idaho

LOWEST WIND CHILL (DEGREES F)...........................32 Saint Paul Island, Alaska

HIGHEST WIND GUST (MPH).................................63 Mt. Washington, N.H.

HIGHEST PRECIPITATION (INCHES)..........................3.49 Valparaiso, Fla.

ON THIS DATE....... It was sunny on this date in 1991 at St. Paul Island, Alaska. This is not exciting until you know that the next 60 days were cloudy, with the next sunny day occurring on Sept. 5. When the sun finally came out, the island reported a daily record high of 55 degrees.

The Associated Press

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