Weather Underground midday recap for Wednesday, June 11, 2014
An area of low pressure pushed across the upper Midwest on Wednesday, while a cold frontal boundary extended from the Great Basin to the northern Plains.
A low pressure system moved eastward across the upper Midwest on Wednesday. This system drew warm, muggy air from the Gulf of Mexico to initiate widespread rain and thunderstorms over the eastern third of the country. The strongest thunderstorms focused over the eastern Ohio Valley and the Mid-Atlantic, as tornado watches were issued in southern Pennsylvania, northeast West Virginia, northern Virginia and western Maryland. Severe thunderstorm warnings were also issued across parts of North Carolina, South Carolina and Virginia, while severe thunderstorm watches were issued in West Virginia. Golf ball sized hail was reported in Nickelsville, Va., while Saxapahaw, N.C., reported quarter sized hail. Heavy rain also developed just to the east of the Mississippi Valley, as flood warnings were issued across a handful of states. Waukegan, Ill., reported a midday total of 2.34 inches of rain, while Bloomington, Ind., reported a midday total of 2.07 inches of rain. High pressure kept conditions mostly clear across the central and southern Plains. Temperatures ranged between the 90s and 100s across the region on Wednesday.
Meanwhile, a cold frontal boundary extended from the Great Basin to the northern Plains. An area of low pressure along the eastern end of the frontal boundary ushered showers and thunderstorms across the upper Intermountain West, the northern Plains and the upper Mississippi Valley. The heaviest rain focused over North Dakota and Minnesota. A ridge of high pressure brought clear conditions to the majority of the West Coast, as warm, dry weather persisted across the Desert Southwest. Needles, Calif., recorded a midday high of 100 degrees on Wednesday.
Temperatures in the Lower 48 states Wednesday have ranged from a morning low of 28 degrees at Stanley, Idaho to a midday high of 105 degrees at Pecos, Texas