Flood Watch Issued for Bay Area Counties Due to Potential Heavy Rain
January 31, 2025
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The National Weather Service (NWS) in San Francisco has issued a Flood Watch for multiple Bay Area counties due to the potential for excessive rainfall from Friday afternoon through Sunday evening. The watch covers Sonoma, Napa, Marin, Contra Costa, Alameda, San Francisco, San Mateo, Santa Clara and Santa Cruz counties.
Why It Matters
The incoming storm is expected to bring significant rainfall across the region, with up to 5 inches predicted in higher elevations. Residents in low-lying and flood-prone areas are advised to prepare for possible flooding, poor drainage and hazardous road conditions. The alert comes as California continues to deal with the impact of frequent atmospheric rivers that have increased landslide risks and infrastructure strain.
What To Know
According to the NWS, the Flood Watch is effective from January 30 at 9:17 p.m. PST until February 2 at 10 p.m. PST. The areas expected to be impacted include San Francisco, the North Bay Interior Mountains, the Santa Cruz Mountains and the East Bay Hills. Urban flooding in city streets and disruptions to transportation routes are likely.
Local emergency officials have advised residents to take precautions, including clearing storm drains, securing outdoor belongings, and staying informed through emergency alerts. Drivers are warned against attempting to cross flooded roadways, as even a few inches of moving water can be hazardous.
San Francisco Upcoming Weather Forecast
According to the National Weather Service, the upcoming week’s forecast for San Francisco is as follows:
Friday: Rain is expected, with a high near 57 degrees Fahrenheit. South winds between 6 to 9 miles per hour. The chance of precipitation is 80 percent.
Friday Night: Continued rain, with a low of around 52 degrees. South winds around 8 to 10 mph. The chance of precipitation is 100 percent.
Saturday: Rain likely, with a high near 60 degrees. The chance of precipitation is 90 percent.
Saturday Night: Rain continues, with a low of around 54 degrees. The chance of precipitation is 90 percent.
Sunday: Rain expected, with a high near 60 degrees.
Sunday Night: Rain likely, with a low around 51 degrees.
Monday: Rain likely, with a high near 58 degrees.
What People Are Saying
NWS Bay Area on X, formerly Twitter: “Excessive Rainfall Outlooks Day 1 and Day 2 have been issued for portions of California highlighting a marginal to slight risk for rapid onset flooding. In other words, heads up this weekend. Flooding is possible.”
What Happens Next
This image, taken from Windy.com on January 31, 2025, shows upcoming rainfall forecasts for parts of the Bay Area in California. This image, taken from Windy.com on January 31, 2025, shows upcoming rainfall forecasts for parts of the Bay Area in California. Windy.com
Forecasters will continue monitoring the storm’s trajectory and intensity, with updates expected throughout the week. Emergency response teams are on standby, and residents are encouraged to check for alerts from NWS and local authorities.
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