Heat Wave and Severe Thunderstorms this Independence Day

A prolonged, dangerous heat wave will persist through the Independence Day weekend across the Ohio Valley, Midwest, and Mid-Atlantic. Numerous temperature records are expected. Clusters of severe thunderstorms will move across parts of the Allegheny Plateau into Mid Atlantic this Independence Day, with potential for widespread damaging winds. Additional severe thunderstorms in the Great Plains. Read More >

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Last Map Update: Sat, Jul 4, 2026 at 2:36:20 pm PDT

Watches, Warnings & Advisories

National Weather Service Seattle/Tacoma, WA

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Red Flag Warning

July 4th Red Flag Warning

West winds will pick up across the region on Independence Day bringing elevated to critical fire weather conditions. The strongest winds are forecast in Central Washington and near the Blue Mountains, where Red Flag Warnings are in effect for Saturday afternoon and evening. Winds will gust up to 30-35 MPH, with relative humidity bottoming out between 12-25%.