Heavy Rain, Flash Flood Update: May 20, 2026

Here is an update concerning the risk for a few areas of flash flooding with storms this afternoon into tonight:

WHAT: MARGINAL to SLIGHT RISK of excessive rainfall

WHEN: Re-development mainly all afternoon thru early parts of tonight.

WHERE: Most of SE LA and portions of southern MS.

CONFIDENCE: Redevelopment this afternoon/evening: Medium/high confidence we’ll see numerous scattered shower/storms redeveloping later today that will likely contain the risk to produce flash flooding.

Impacts: The main threats associated with any severe storms will be:

  • Areas of flash flooding caused by slow-moving or training thunderstorms with intense rain rates of 2-4″+ /hour.
  • A few locally strong storms could be possible, producing locally gusty winds. 
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