Flash Flood in Lamoille County, Vermont
Flash Flood May 17, 2025 · Lamoille County, Vermont
Where the report was made, with tornadoes recorded within 15 miles over the years.
What the National Weather Service wrote
Several reports of road closures and/or washouts in the Cambridge/Jeffersonville area. These include, but are not limited to Route 15 east of the Wrong Way Bridge, Bartlett Hill Rd. and Williamson Rd.
The wider storm
A weak area of low pressure and associated front moved across northern NY and Vermont during the afternoon and evening hours of May 17th. This system moved across a relatively unstable airmass across the region that resulted in numerous showers and thunderstorms.
Some of the thunderstorms were severe with damaging winds and large hail upward of golf ball size (1.75 inches diameter). In addition there was heavy rain and some training of thunderstorms that quickly produced 2 to 3 inches of rain. some of these areas had actually witnessed 1/2 to 1+ inches of rain the preceding day, making it more vulnerable to flooding.
Began near Cambridge (44.6296, -72.9021).
Source: NOAA Storm Events Database, event 1246494. Narratives are written by the National Weather Service forecast office that issued the report.
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