Heavy Rain Update: August 29, 2025

Here is an update concerning the heavy rain threat today into tonight:

Changes from previous update: The area of greatest threat has expanded southward slightly

 

Overview:

WHAT: MARGINAL RISK to SLIGHT RISK of Heavy Rain that could lead to flash flooding 

WHEN:  today through tonight

WHERE:  Most of southeast Louisiana and south Mississippi along and north of the I-10/I-12 corridor

CONFIDENCE: We are confident there will be showers and thunderstorms across the area. We have less confidence that any of them will result in heavy rainfall/flash flooding 

 

Impacts:

  • Rainfall of 1 to 3 inches is currently forecast. Locally higher amounts are expected.
  • High rainfall rates will quickly lead to runoff with ponding of water in low lying areas and localized flash flooding.
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