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Extreme Heat and Excessive Rainfall This Week

A significant heat wave continues for the Rockies, Northern Plains, and Great Lakes into the Mid-Atlantic, peaking in intensity through midweek and lingering across parts of the Northern Plains and Midwest until this weekend. Excessive rainfall my bring life-threatening and locally catastrophic flash and urban flooding across portions of southwestern Texas through early Friday. Read More >

Fig. 18. Radar base reflectivity from 2206 to 2340 UTC showing convection along an east- to-west oriented segment of Claudette’s outer rainband north of the storm’s center. At least two storms seen in the loop were relatively long lived and displayed evidence of storm scale organization.