UPDATE: Tornado Threat and Flash Flooding Trigger Boat Rescues in Harrison County, West Virginia

Swift-water rescue teams are using boats to reach people affected by rapidly rising floodwaters across Harrison County, West Virginia, as powerful thunderstorms move through the Appalachian region.

The emergency response marks a major escalation after flash flood warnings were issued for Clarksburg and surrounding communities Monday afternoon.

Heavy Rain Triggers Dangerous Flooding

Repeated lines of severe thunderstorms have produced heavy rainfall across northern West Virginia, flooding roads, streams and low-lying areas.

Clarksburg, Bridgeport, Shinnston, Stonewood, Nutter Fort, Anmoore and nearby communities are among the locations threatened by flash flooding.

Sections of Interstate 79 and U.S. Route 50 are also within the warned area.

Residents Urged to Avoid Flooded Roads

Authorities are urging residents to stay away from flooded streets and never attempt to drive through moving water.

Details about the number of people rescued or whether any injuries occurred were not immediately available.

The rescue operations and severe-weather emergency remain ongoing.