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Dangerous Heat Continues in the East; Heavy Rain and Flash Flooding in the Southwest, Plains, and Upper Midwest

Prolonged and intense heat wave continues into Friday with relief expected by this weekend. The most significant cumulative heat impacts are anticipated across the Mid-Atlantic through Thursday and eastern Ohio Valley through Friday. Thunderstorms and heavy rain will continue to bring a flash flood threat over portions of the central Plains, Midwest, northern Great Lakes, and the Southwest. Read More >

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Cooler but very dry and windy conditions will prevail across south and central Wyoming on Saturday behind Friday's cold frontal passage. These conditions result in high to extreme fire danger, especially across Johnson and Natrona counties and the southern Bighorn Mountains where Red Flag Warnings remain in effect until 9 pm Saturday. Any fires that develop in these areas will likely spread rapidly.  Outdoor burning is strongly discouragedLearn before you burn. 

 

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Red Flag Warnings (lavender shaded areas) for portions of central Wyoming continue until 9 pm Saturday.

 

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Minimum Relative Humidity.  A cooler but very dry airmass will prevail over the area Saturday behind Friday's cold frontal passage. Mimimum relative humidity of 8-15% combined with gusty west wind will be favorable conditions for rapid fire growth of any existing fires or hotspots Saturday afternoon. 

 

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