This is the blog for the United States' national forecast. These summaries are by Weather Underground forecasters and are updated twice each day.
By: nationalsummary , 10:43 AM GMT on May 14, 2014
Weather Underground midday recap for Wednesday, May 14, 2014
An active weather system moved across the eastern third of the country on Wednesday, while warm, dry conditions persisted across the West Coast.
A cold frontal boundary inched eastward over the eastern third of the country on Wednesday. As this system collided with a warm, muggy air mass from the Gulf of Mexico, strong to severe thunderstorms developed over the central Gulf Coast, the Mississippi Valley, the Tennessee Valley, the Ohio Valley and parts of the upper Midwest. Severe thunderstorms impacted the Tennessee Valley and the Ohio Valley as tornado warnings were issued in northeast Ohio. Hebron, Ohio, reported a midday total of 1.00 inches of hail, while Ashville, Ohio, reported a midday total of 0.88 inches of hail. Heavy rain associated with these thunderstorms also produced flash floods across the region, as flash flood warnings were issued in Mississippi, Alabama and West Virginia. Flash flood watches were also issued in a number of other states, as Corning, Ark., reported a midday total of 1.73 inches of rain, while Jackson, Tenn., reported a midday total of 1.67 inches of rain.
Meanwhile, a separate cold front extended across the upper Intermountain West and the northern Plains. Scattered showers moved over parts of the central Plains, while the central Rockies experienced high elevation snow showers. Just to the southwest of this system, a large ridge of high pressure lingered over the Great Basin and the Intermountain West. This system brought very warm, dry conditions to the West Coast, as excess heat warnings were issued in the San Francisco Bay Area. Temperatures ranged between the 90s and 100s across the West Coast, as Santa Maria, Calif., recorded a midday high of 100 degrees.
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