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Extreme Heat Across the Southern U.S.; Severe Thunderstorms and Heavy Rain in the Plains and Mississippi Valley

A heat wave over the Southwest will intensify late week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Severe thunderstorms and heavy rain are expected over portions of the Plains and Mississippi Valley tonight, which will shift to parts of the Upper Midwest and mid-Mississippi Valley Friday. Monsoonal showers and flooding persist in the Desert Southwest. Read More >

Fig. 8. KMAF base reflectivity loop from 1828 to 1938 UTC shows convection associated with one of Claudette’s outer rainbands moving over the McDonald Observatory. This convection likely generated the relatively stronger winds noted on the Mount Fowlkes meteogram between 1830 and 1930 UTC.