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Associated Press

Posted on June 29, 2014 at 4:03 PM

Updated Sunday, Jun 29 at 4:05 PM

Weather Underground midday recap for Sunday, June 29, 2014

A low pressure system skimmed across the northern tier of the country on Sunday, while a separate low pressure system lingered to the east of Florida.

A low pressure system inched eastward over the northern Plains on Sunday. Although this system focused over south central Canada, it brought heavy rain and gusty winds to North Dakota. A cold frontal boundary associated with this system stretched southwestward over the central Plains and the Intermountain West. Cool, dry conditions pushed across the upper Intermountain West, as Yellowstone, Wyo., recorded a morning low of 30 degrees.

Meanwhile, a warm, humid air mass surged across the Tennessee and Ohio Valleys. This air mass initiated strong to severe thunderstorms across the region, as flash flood warnings were issued in northeast Arkansas. Flash flood watches were also issued in eastern Arkansas, northern Mississippi and southwest Tennessee on Sunday. West Memphis, Ark., reported a midday total of 6.17 inches of rain, while Memphis, Tenn., reported a midday total of 5.89 inches of rain.

Along the West Coast, an onshore flow from the Pacific pushed scattered showers over parts of western Washington and northwest Oregon. A ridge of high pressure over the eastern Pacific kept conditions clear across the Southwest, as temperatures jumped into the triple digits over the southern California, Nevada and Arizona deserts. Bullhead City, Ariz., recorded a midday high of 102 degrees on Sunday.

Temperatures in the Lower 48 states Sunday have ranged from a morning low of 30 degrees at Yellowstone, Wyo. to a midday high of 104 degrees at Pecos, Texas

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