JACKSON, Mississippi — A Moderate Risk for flash flooding, rated level 3 out of 4, is in place from southeast Mississippi into south-central Alabama today. Heavy rain is expected to train repeatedly over the same locations across the Jackson, Hattiesburg and Montgomery corridor, meaning the same streets, neighborhoods and low-lying areas will receive multiple rounds of heavy rainfall with little time to drain between storms. Dewpoints in the low to mid 70s and precipitable water values over 2 inches are in place, creating an atmosphere that will wring out heavy rainfall very efficiently.
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Who Faces the Highest Flash Flood Risk
- Moderate Risk — at least 40% chance of flash flooding within 25 miles: Jackson through Hattiesburg corridor across central and southeast Mississippi, extending into Montgomery and south-central Alabama
- Slight Risk — at least 15% chance: Broader zone covering Starkville, Tuscaloosa, Mobile, Biloxi, Gulfport and Baton Rouge
- Marginal Risk — at least 5% chance: Outer fringe covering Monroe, Alexandria, Lafayette…