MENDOCINO CO., 2/22/26 – The National Weather Service has issued a flood watch for Mendocino County, as an atmospheric river could bring 1 to 5 inches of rain starting Monday through Tuesday night.
The watch is in place from 10 p.m. Monday until 10 p.m. Tuesday.
According to the weather service office in Eureka, there is an increased risk of flooding along rivers, creeks and streams, as well as in low-lying and flood-prone areas.
The weather service also warned of an increased risk of rockslides and landslides.
“You should monitor later forecasts and be alert for possible flood warnings,” the agency said in a statement. “Those living in areas prone to flooding should be prepared to take action should flooding develop. Take extra caution if driving.”
A wind advisory is also in effect until 5 p.m. Sunday.
Will the Russian, Navarro, Garcia rivers flood?
The National Water Prediction Service, operated by NOAA, currently forecasts that the Russian River could crest at 13.9 feet Tuesday evening. That is just below its 15-foot flood stage. Localized flooding is possible, meaning state Highway 175 in Hopland could be impacted.
While the Navarro River is not expected to reach its flood stage of 23 feet, it is currently forecast to crest around 14.8 feet early Wednesday morning, meaning state Highway 128 could see flooding.
NOAA does not have an established flood stage for the Garcia River at Highway 1, so we cannot forecast if it will flood or not, but it’s always good to be prepared just in case.
Beyond Mendocino County
Lake and Humboldt counties are also under a wind advisory Sunday afternoon and a flood watch through Tuesday. Both counties will see the same weather conditions as Mendocino, with Humboldt forecast to see a bit more rain than Mendo.
As of Sunday morning, Sonoma County has no active warnings or watches. Weather is forecast to be windy and cloudy, with a chance of drizzle on Sunday. Monday and Tuesday brings rain across the North Bay.
Learn more and stay safe
If you live in a low-lying or flood-prone area, consider clearing storm drains and culverts, securing loose outdoor items, charging devices, and picking up sandbags if you typically need them during heavier storms.
Drivers should use caution and check for road closures or hazards before traveling. For state highway conditions, visit https://quickmap.dot.ca.gov/.
Residents are encouraged to monitor updated forecasts as the timing and intensity of the system become clearer. Visit http://www.weather.gov for localized weather and http://www.mendoready.gov for emergency readiness tips.