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Flash Flood Watch Issued For Napa County, North Bay

Patch logo Patch 10/22/2021 Maggie Fusek
A flash flood watch means residents should monitor forecasts and be prepared should flash flood warnings be issued. © Shutterstock A flash flood watch means residents should monitor forecasts and be prepared should flash flood warnings be issued.

NAPA COUNTY, CA — A flash flood watch has been issued for the valleys and mountains of Napa County and the North Bay as an atmospheric river is forecast to take aim at the region.

National Weather Service meteorologists are forecasting heavy rainfall late Saturday through Sunday evening over the 2020 burn areas in Napa and Sonoma counties, which may lead to flash flooding and debris flow.

"In addition to potential flash flooding over the 2020 burn areas there will be the threat of urban and small stream flooding throughout the North Bay," the weather service said Friday.

"An atmospheric river will take aim at the North Bay with light rain developing Saturday night," forecasters said. "Steady rain on Sunday morning will become heavy as the frontal boundary passes through the North Bay and then reaches the Santa Cruz mountains by Sunday afternoon and evening. The heavy rain band will then shift into the coastal hills of Monterey county Sunday night. Lingering showers on Monday."

The flash flood watch means residents in the cities of Rohnert Park, Santa Rosa, Lagunitas-Forest Knolls, Angwin, San Rafael, Woodacre, South Santa Rosa, Petaluma, Napa and Novato should monitor forecasts and be prepared should flash flood warnings be issued.

"Local emergency services are monitoring the situation," the National Weather Service San Francisco Bay Area said. "PLAN NOW so you will know what to do in an emergency. Keep informed by listening to local radio and television for statements and possible warnings. Follow the advice of public safety officials."

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