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Flash flood warnings issued in northeastern US as wildfire smoke affects air quality

Flash flood warnings are in effect across the northeastern US as severe thunderstorms bring heavy rain. Concurrently, air quality in New York City has deteriorated due to smoke from Canadian wildfires, reaching unhealthy levels.

On July 18, 2026, flash flood warnings were issued for parts of the northeastern United States due to severe thunderstorms. The storms followed a period of poor air quality in New York City and surrounding areas, attributed to smoke from Canadian wildfires. The air quality in these regions has reached unhealthy levels as the smoke returned on Saturday after a brief respite on Friday.

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Flash flood warnings strike north-east US amid wildfire smoke from Canada

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Flash flood warnings issued in northeastern US as wildfire smoke affects air quality