Flash Flood in Roanoke (c) County, Virginia

Flash Flood May 27, 2018 · Roanoke (c) County, Virginia

$500K

Damage as recorded

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

What the National Weather Service wrote

Extensive flooding occurred from Mudlick Creek along Grandin and Garst Mill Roads with water getting into many homes. Post-flood survey indicated a recurrence interval of about 10 years (0.1 annual exceedance probability) on Mudlick Creek as the stream rose roughly 10 feet above baseflow.

The wider storm

Slow-moving or stationary storms during the afternoon over a small part of Roanoke County and City produced severe flash flooding mainly confined to the Mudlick Creek basin, a small tributary of the Roanoke River. Radar estimates 4 to 6 inches of rain fell across parts of the 20 square mile basin, but later rain gauge reports indicated 6 to 7+ inches fell.

Began near Cave Spg (37.2571, -80.0028).

Source: NOAA Storm Events Database, event 750366. Narratives are written by the National Weather Service forecast office that issued the report.

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