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Heat Across the Center of the Nation; Severe Thunderstorms Across the Great Lakes and Ohio Valley

Heat expands across the Desert Southwest, Plains, Mississippi Valley and Midwest into Monday. Fire weather concerns continue for portions of the Intermountain West. Active monsoonal moisture fuels thunderstorms over the Southwest with possible flash flooding. Tropical cyclone Fausto in the Pacific, should weaken as it approaches Hawaii; Dangerous surf, swells and rip currents are expected. 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.