Flash Flood in Johnson County, Tennessee

Flash Flood September 25, 2024 – September 26, 2024 · Johnson County, Tennessee

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

What the National Weather Service wrote

Several roadways remain flooded across Johnson County, and a few roads were washed out. Several people needed rescue due to the flooding and washouts.

The wider storm

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.

Began near Mountain City (36.4084, -81.8891).

Source: NOAA Storm Events Database, event 1218454. Narratives are written by the National Weather Service forecast office that issued the report.

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