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Flash Flood — Washington, TN

Sep 27, 2024

Tropical Storm Helene caps off a several day heavy rainfall event in association with a stalled closed upper low that drew a stream of tropical moisture into the area on the 25th and 26th. The arrival of Helene on the 27th yielded catastrophic flash flooding and river flooding, as well as significant wind damage as wet soils and strong wind gusts led to forest damage.

Source: NOAA National Weather Service Storm Events Database (event 1218741). Narrative written by NWS staff at the time of the event.

Flood Risk Context for Washington, TN

This event is one of many recorded floods in Washington County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.

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More Flood Stories

Flash Flood$25K damage

Washington, TN · Jul 17, 2013

Severe thunderstorms formed in a moist and moderately to strongly unstable air mass situated on the periphery of a large Upper Level High Pressure System over the Ohio Valley. The storms produced mostly wind damage.

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Flash Flood

Washington, TN · Sep 27, 2024

Tropical Storm Helene caps off a several day heavy rainfall event in association with a stalled closed upper low that drew a stream of tropical moisture into the area on the 25th and 26th.

Read the full account →
Flash Flood$10K damage

Washington, TN · Apr 9, 2011

A boundary across the area triggered scattered severe thunderstorms during the afternoon and evening hours. Six tornadoes touched down across northeast Tennessee and into southwest Virginia.

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Flash Flood

Washington, TN · Apr 13, 2020

A prolonged convective event with deep moist southerly flow in an unstable environment with strong wind shear generated supercell thunderstorms across Southeast Tennessee and Southwest North Carolina.

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