Flash Flood in Ascension Parish, Louisiana
Flash Flood July 30, 2025 · Ascension Parish, Louisiana
Where the report was made, with tornadoes recorded within 15 miles over the years.
What the National Weather Service wrote
High water near Ascension Parish Rd and Old Jefferson Hwy. Multiple parking lots under water and a partially submerged vehicle.
The wider storm
A primed microburst environment was in place on July 30, 2025, as hot and humid conditions combined with a weak surface low pressure across southeast Louisiana and southern Mississippi. Numerous severe thunderstorms developed through the afternoon. In Marrero, Jefferson Parish, thunderstorm winds knocked down a powerline, while additional wind damage in Hammond brought down multiple trees, including one onto a powerline. In Centreville, MS, a downed tree damaged two homes. Heavy rainfall also led to flash flooding, with high water reported in Gretna, Baton Rouge, and Ascension Parish where parking lots were submerged and a vehicle partially underwater. Hail up to the size of quarters was observed in Baton Rouge.
Began near Oak Grove (30.3200, -90.9800).
Source: NOAA Storm Events Database, event 1286894. Narratives are written by the National Weather Service forecast office that issued the report.
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