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Jun 25, 2026

Post-tropical storm could unleash life-threatening flash flooding with millions of Americans at risk

Life-threatening flash flooding fueled by days of heavy rain slams multiple states as Arthur sweeps the South Email New York Post Read the Latest on Page Six

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Post-tropical storm could unleash life-threatening flash flooding with millions of Americans at risk

By Raymond Sanchez, FOX Weather Published June 18, 2026, 10:04 a.m. ET

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Originally Published by:

FOX Weather

Post-Tropical Storm Arthur is unleashing potentially catastrophic and life-threatening flooding throughout the South, as days of heavy rain will slam communities in Louisiana, Mississippi and Alabama.

The remnants of Tropical Storm Arthur persist, as millions of Americans are at risk of flash flooding from Eastern Texas to Georgia.

A Level 4 out of 4 flash flood threat has been issued for Thursday and a Level 3 out of 4 risk for Friday in the Southeast U.S., where widespread rain and catastrophic flooding are possible.

Locations with a high flood risk include Baton Rouge, Louisiana; Jackson, Mississippi; Montgomery, Alabama; and Atlanta.

“Pacific and Gulf moisture combining into a persistent plume across the South will increase the flooding risk across Louisiana, Mississippi and Alabama as the heaviest moisture remains on the eastern side of the storm as it moves northward in the coming day,” said the FOX Forecast Center.

As a result, flood watches are in effect across most of Louisiana, Mississippi, Alabama, and Georgia.

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