Marine Thunderstorm Wind — Lake Ponchartrain and Lake Maurepas, Gulf of Mexico

2025-08-21 · near Mandeville Lakefront - Xmvl Weatherflow, Lake Ponchartrain and Lake Maurepas, Gulf of Mexico

Event narrative

Mandeville Weatherflow station XMVL measured a wind gust of 46 mph.

Wider weather episode

The local area was on the eastern periphery of an upper level ridge. A weak frontal boundary was slowly sagging in from the northeast due to the presence of an upper level trough along the east coast of the United States. Strong daytime heating combined with ample moisture in place and weak surface boundary convergence created an environment conducive for widespread thunderstorms over the marine areas.

View location on OpenStreetMap → (30.3600, -90.0900)

Source: NOAA Storm Events Database, event_id 1292985. Narrative written by the NWS forecast office that issued the report.