Flash Flood — Ascension, Louisiana

2024-12-09 · near Donaldsonville, Ascension, Louisiana

Event narrative

A CO-OP observer reported that Lee Street in Donaldsonville was completely covered with water and impassible.

Wider weather episode

On December 9, 2024, a slow-moving cold front interacting with a deep moisture plume resulted in prolonged periods of heavy rainfall across southeastern Louisiana. Widespread rainfall totals of 4 to 8 inches were reported, with localized amounts exceeding 10 inches, particularly in the river parishes portions of the Northshore. The excessive rainfall led to flash flooding, with numerous road closures.

View location on OpenStreetMap → (30.1000, -90.9800)

Source: NOAA Storm Events Database, event_id 1228570. Narrative written by the NWS forecast office that issued the report.