Flash Flood in St. Bernard Parish, Louisiana

Flash Flood September 28, 2021 · St. Bernard Parish, Louisiana

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

What the National Weather Service wrote

Veronica Drive in Chalmette was impassible due to high water.

The wider storm

Gulf moisture surging into the local area pushed precipitable water values to above the 90th percentile for this time of year. At the same time, an upper level trough was digging into Texas. Showers and thunderstorms began developing ahead of this feature. A weak wind field in place was a prime environment for a slow moving storm to produce flash flooding.

Began near Versailles (29.9400, -89.9500).

Source: NOAA Storm Events Database, event 986770. Narratives are written by the National Weather Service forecast office that issued the report.

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