Weather Service: Flash flood watch for Guam and Rota starting at 6 p.m.

A flash flood watch in effect for Guam and Rota beginning at 6 p.m.

The National Weather Service on Guam is monitoring a large trade-wind disturbance to the southeast of the Mariana Islands, expected to bring heavy showers. Rainfall of 3 to 5 inches is possible. The heaviest showers are expected Thursday night.

A flash flood watch means that conditions may develop that lead to flash flooding, a very serious situation, the Weather Service stated.

The community is advised to monitor forecasts and take precautionary actions should a flash flood warning be issued or heavy rains occur, the Weather Service advised.

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Residents should:

• Clear drainage areas and unblock clogged storm drains to minimize the chance of flooding.
• Avoid walking or driving through flood waters. Just 6 inches of moving water can knock you down, and 2 feet of water can sweep your vehicle away
• Be prepared to move immediately to higher ground if there is a chance of flash flooding.
• If floodwaters rise around your car but the water is not moving, abandon the car and move to higher ground. If the water is moving, don’t leave the car.
• Avoid camping, parking or hiking along streams and rivers during heavy rainfall; they can flood quickly and with little warning.

This article originally appeared on Pacific Daily News: Weather Service: Flash flood watch for Guam and Rota starting at 6 p.m.