Weather Underground midday recap for Wednesday, July 20, 2016
Stormy weather affected portions of the northern Plains and the Mississippi Valley on Wednesday, while monsoonal moisture surged across the Four Corners.
A wave of low pressure transitioned eastward across the northern Plains. This system interacted with warm and humid air, which triggered isolated showers and thunderstorms over the northern Plains and the upper Mississippi Valley. Reeve, Wis., reported 1.75 inch sized hail. Belleville, Ill., reported a midday total of 2.08 inches of rain. Excessive heat warnings were issued for a handful of states on Wednesday, including eastern North Dakota, South Dakota, Nebraska, Kansas, Missouri, Iowa, Minnesota, Wisconsin and Illinois. Minneapolis, Minn., recorded a midday high of 85 degrees with a heat index of 91 degrees. Lincoln, Neb., recorded a midday high of 91 degrees with a heat index of 100 degrees.
Meanwhile, the remnants of a stationary front interacted with moisture-rich air, which lead to isolated showers and thunderstorms across the Deep South and the Southeast. Darlington, S.C., reported a midday total of 2.39 inches of rain. Southern Pines, N.C., reported a midday total of 0.94 of an inch of rain.
Out west, monsoonal thunderstorms popped up across the Four Corners and the eastern edge of the Great Basin. Flood advisories were issued in central Arizona.
Most of the West Coast experienced dry weather on Wednesday. Los Angeles, Calif., recorded a midday high of 79 degrees. Seattle, Wash., recorded a midday high of 73 degrees.
Temperatures in the Lower 48 states Wednesday have ranged from a morning low of 32 degrees at Truckee-Tahoe, Calif. to a midday high of 107 degrees at Yuma MCAS, Ariz.