National Weather Service United States Department of Commerce

Prolonged Heavy Rain and Snowfall Event for the Northwest U.S.

A prolonged atmospheric river event will continue to bring moderate to heavy rain to northern and central California through the Pacific Northwest with mountain snow in the Cascades and northern Rockies today into next week. Read More >

A Flood Watch is in effect through 10 PM Sunday for Alameda, Contra Costa, Marin, Napa, San Francisco, San Mateo, Santa Clara, Santa Cruz, and Sonoma Counties. You should monitor later forecasts and be alert for possible Flood Advisories/Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.
Strong and gusty southerly winds are expected through this weekend. The combination of wind gusts of 40+ mph and moist soils will increase the risk for downed trees. If you have not already done so, secure loose outdoor objects that could be blown around or damaged by the wind.
Rain returns to our area on Friday as a series of systems impacts our region. The peak time period for the initial wave of light to moderate rainfall is anticipated Friday and into Saturday. Additional rounds of rainfall are forecast next week. Some of the storm systems could bring impactful rain amounts and windy conditions. There has been increasing confidence in impacts for the North Bay, with the forecast trending farther south, however, there's uncertainty with respect to this. In the meantime, clean out gutters/drains of leaves and also anticipate longer commute times on Friday and into next week. There's medium confidence in the forecast at this time, so check in with us for forecast updates at weather.gov/mtr.

 

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