10:30 AM | Wednesday, July 22, 2026
Key Messages:
- Tropical Storm Bertha will bring minor to moderate storm surge flooding and tropical storm winds (mainly in gusts) to coastal portions of SE LA today through Thu morning. There is potential for a few storms to also produce locally heavy rainfall leading to isolated flooding.
- Mainly minor impacts will be possible across coastal SW LA Thursday
- Heat will be a big concern today, with a lower threat continuing into Thursday
- Bertha will bring minor to moderate impacts to coastal Louisiana today through Thursday
- Minor to moderate storm surge flooding, with some low lying coastal roads becoming impassable – greatest impacts east of the MS River
- Tropical storm winds (mainly gusts) could down a few tree limbs and/or lead to isolated power outages – greatest threat along the immediate coast
- High rainfall rates in any storms that do affect land areas could lead to localized flooding
- Despite the landfalling tropical storm, heat is a significant concern today, with little in the way of cloud cover or rain on the north side of the storm, heat index values will climb to 110 degrees or higher across most of the state, possibly reaching as high as 118 degrees.
- While a low confidence forecast, there is some potential for re-development over the northwestern Gulf, and this could lead to mainly minor impacts across coastal southwestern Louisiana
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