Monday, August 26, 2013

National Weather Summary for August 26,2013,from weatherunderground.com

Weather Underground midday recap for Monday,August 26,2013.

Wet weather with threats of flooding continued from the Desert Southwest into the Central Great Basin on Monday, while hot weather and chances of severe weather continued in the upper Midwest.

In the West, periods of widespread and frequent showers with embedded thunderstorms and chances of locally heavy rainfall from parts of inland southern California and Arizona into southern Nevada and Utah. Flood and flash flood warnings and watches were issued for the region due to recent and continued moderate to heavy rainfall. Burn areas from recent fires were especially prone to flash flooding debris flow.

In the Central U.S., hot temperatures continued in the Midwest as an upper level ridge of high pressure over the Central U.S. began to shift to the east. Heat advisories remained in effect for portions of the upper Midwest, from parts of the eastern Dakotas and eastern Nebraska through western areas of Wisconsin and Illinois, as daytime highs climbed into the 90s to near the 100 degree mark and heat indices reached into the triple digits. An excessive heat warning was issued for southern Minnesota as daytime maximum heat index values ranged between 100 and 110 across the region. Meanwhile, strong heating along and to the southwest of a stalled frontal boundary extending form the Dakotas eastward across central Minnesota triggered chances of thunderstorms in South Dakota Minnesota and southwestern Wisconsin. Areas from the South and North Dakota border through central Minnesota into Wisconsin remained at slight risk of severe thunderstorm development with damaging wind gusts and large hail from Monday afternoon through early Monday night.

Further east, an associated warm front and weak wave of low pressure kick up areas of showers in the Northeast as the disturbances trekked toward the East Coast. To the south, showers and thunderstorms continued near the Gulf Coast and across Florida.

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