Wednesday, November 20, 2013

National Weather Summary for November 20,2013 from weatherunderground.com

Weather Underground midday recap for Wednesday,November 20,2013

A cold frontal boundary stretched across California, Nevada and Idaho on Wednesday, while a separate cold front pushed southward over the central U.S.

Winter storm warnings were issued across the Intermountain West and northern Plains on Wednesday as a cold frontal boundary moved over the region. Temperatures were very cold throughout the morning and early afternoon, while moderate snow showers pushed across Idaho, Montana and North Dakota. Gallatin, Mont., recorded a midday total of 8.0 inches of snow, while Watford City, N.D., recorded a midday total of 6.75 inches of snow. Conditions were blustery across the northern Plains and upper Midwest, as Crosby, N.D. reported a morning low of 6 degrees, and Williston, N.D., recorded a morning low of 10 degrees.

A separate cold front pushed showers and thunderstorms across northern California, while light snow showers fell in the Sierra Nevadas and parts of the Great Basin. Meanwhile, the Pacific Northwest stayed clear of wet weather on Wednesday due to a high pressure system off of the coast of northern Washington.

Parts of the Mississippi Valley and upper Midwest also experienced thunderstorms on Wednesday as a cold air mass associated with a cold front interacted with a warm, southerly flow from the Gulf of Mexico. Lamoni, Iowa, recorded a midday total of 0.86 inches of rain. The majority of the East Coast stayed clear of precipitation, with the exception to that being Florida, where thunderstorms formed as a result of a lingering frontal boundary.

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