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Marine Thunderstorm Wind · Gulf of Mexico

Marine Thunderstorm Wind August 21, 2025 · Lake Ponchartrain and Lake Maurepas, Gulf of Mexico

46 mph

Measured gust (40 kt)

Where the report was made, with tornadoes recorded within 15 miles over the years.

What the National Weather Service wrote

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

The wider storm

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.

Began near Mandeville Lakefront - Xmvl Weatherflow (30.3600, -90.0900).

Source: NOAA Storm Events Database, event 1292985. Narratives are written by the National Weather Service forecast office that issued the report.

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