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Dangerous Heat in the Southwest; Severe Thunderstorms from the Central Plains into the Ohio Valley

Dangerous heat will build across the Southwest U.S. through the end of the week with daytime highs of 110-115°F. Isolated to widely scattered severe storms are expected across parts of the central and southern High Plains, Great Lakes into the Ohio Valley, and parts of the Ozarks to Lower Mississippi Valley today. Read More >

Overview

A line of severe thunderstorms initially developed over southeast Iowa on the morning of June 28th, 2018. A moist and unstable airmass out ahead of these storms allowed them to strengthen as they moved southeast, reaching peak intensity as they moved through portions of the northern and eastern St. Louis metro area and western Illinois. Significant and fairly widespread wind damage occurred from these storms Thursday afternoon into Thursday evening, with even a weak tornado hitting near Elsah, IL.
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