Flash Flood in Westchester County, New York

Flash Flood August 6, 2024 · Westchester County, New York

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

What the National Weather Service wrote

Route 1 in Mamaroneck closed due to flooding.

The wider storm

Several rounds of heavy thunderstorms developed over the area on the afternoon of August 6th. A slow moving frontal system stalled out over the area. PWATs of 2-2.2 inches and a sharp gradient of MUCAPE peaking out over the area near 2500 J/kg allowed for the development of strong thunderstorms producing torrential rainfall with rates upwards of 1.5-2.5 inches per hour. Total rainfall was 1-3 inches with localized amount up to 4-5 inches.

Began near Larchmont North (40.9300, -73.7500).

Source: NOAA Storm Events Database, event 1212538. Narratives are written by the National Weather Service forecast office that issued the report.

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