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U.S. Weather Update 8.20.26

| August 20, 2026 | By

Thunderstorms, some severe, may lead to scattered instances of flash flooding across the Midwest and Ohio Valley and southern Arizona. The threat will shift to the Mid-Atlantic coast on Thursday. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that little-to-no relief from the scorching daytime highs will be available.

 

Flood Watch included but not limited to: Indiana, Illinois, Ohio, Pennsylvania, West Virginia, Kentucky, Missouri

Flood Advisory included but not limited to: Indiana, Illinois, Ohio

Flood Warning included but not limited to: Indiana, Ohio

Flash Flood Warning included but not limited to: Indiana, Ohio, Kentucky, Tennessee

Dense Fog Warning included but not limited to: Illinois, Iowa, Missouri, Kansas, Nebraska, South Dakota, Maine

 
 
 

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