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Heavy rain prompts flash flood watch in NE Tennessee

Johnson City Press • Updated May 20, 2020 at 4:53 PM

The National Weather Service has issued a flash flood watch for Carter, Unicoi and Johnson counties through Thursday morning.

Heavy rain along the Tennessee and North Carolina border will result in possible flash flooding of small streams and rivers. This includes areas such as the Doe River and Watauga River basins near Roan Mountain. Storm total rainfall up to 4 inches will be possible in this area.

Flash Flood Watch means that conditions may develop that lead to flash flooding. You should monitor later forecasts and be prepared to take quick action if flooding is observed or a Flash Flood Warning is issued. If you come to a closed or flooded road, turn around.

The Tennessee Valley Authority River Forecast Center expects Watauga Lake to rise 7 to 8 feet between Wednesday and Sunday, according to a TVA news release.

That projection is rainfall dependent and based on the current rainfall forecast. Pool levels at Watauga Lake have the potential to reach and break the record level of 1967.06 set in 2013. South Holston Lake is also expected to rise significantly, 3 to 4 feet based on latest forecasts.

“TVA encourages marinas, property owners or other shoreline interests to follow lake levels via the TVA Lake Info App, TVA.com or through the National Weather Service,” TVA said in the release.

Forecasts and data are updated almost in real time and around the clock:

— Watauga: https://water.weather.gov/ahps2/hydrograph.php?wfo=mrx&gage=wtgt1

— South Holston: https://water.weather.gov/ahps2/hydrograph.php?wfo=mrx&gage=shdt1

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