SF Weather This Week: Cool Snap, Flood Warnings—Live Tracker Map
February 4, 2025
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San Francisco is bracing for a wet and windy week as an atmospheric river storm brings heavy rainfall, prompting flood advisories and watches across the Bay Area. With temperatures running cooler than the historical average for early February, the National Weather Service (NWS) has issued multiple warnings for potential urban and small-stream flooding, making travel conditions hazardous in some areas.
Why It Matters
The city is experiencing a significant shift in weather patterns, with Tuesday’s temperature 2.9 F cooler than the five-year historical average for February 4. More pressing, however, is the flood risk—San Francisco is expected to receive 1.5 to 3 inches of rain throughout the day, with peak precipitation rates nearing an inch per hour, according to the San Francisco Chronicle.
What To Know
The NWS has issued a flood advisory until 9:45 a.m. PST and a flood watch through 4 a.m. Wednesday. These warnings highlight the potential for road closures and transportation disruptions, particularly in low-lying areas and along major highways, where excessive rainfall could overwhelm drainage systems.
Atmospheric rivers, which are long streams of moisture-laden air, are responsible for the intense rain. According to USA Today, these systems can transport as much moisture as the Mississippi River carries in liquid water, leading to significant precipitation and flooding concerns.
San Francisco Upcoming Weather Forecast
According to the NWS, San Francisco will experience a mix of wet and dry conditions over the next seven days. Tuesday will bring heavy rain and strong winds, with temperatures peaking at 59 F and dropping to 46 F at night.
The downpours may cause flooding and power outages due to fallen trees and power lines. On Wednesday, conditions will improve slightly with partial sunshine, a high of 56 F, and a low of 48 F.
Thursday will see another round of rain accompanied by strong winds, with a high of 55 F and a low of 45 F. Friday is expected to be breezy in the morning, with clearing skies later in the day and temperatures reaching 56 F before dropping to 42 F at night. The weekend will bring a mix of sun and clouds, with Saturday’s high reaching 57 F and Sunday’s high at 55 F, both with lows in the low 40s.
Monday will start the new week with partly cloudy skies and a high of 58 F, with nighttime temperatures cooling to 43 F. Residents should remain vigilant for weather updates and prepare for possible shifts in conditions as the storm system progresses.
What People Are Saying
In several posts on X, formerly Twitter, the NWS Bay Area issued flood advisory for different areas.
“A general thunderstorm outlook is in effect for the Bay Area and northern Monterey Bay Region on Tuesday. The highest potential will be from 10 AM to 7 PM as a cold front passes through the region,” the service said.
What’s Next
The storm’s slow-moving nature could prolong the wet conditions, particularly in the Santa Cruz Mountains, where rainfall totals may exceed 4 inches. Wind gusts up to 55 mph are also expected, with a wind advisory in place for coastal regions and higher elevations.
Beyond this system, another round of rain could develop by the weekend, keeping flood concerns elevated. Residents are advised to check real-time updates through the NWS live tracker map and local news reports to stay informed about evolving conditions.
This image, taken from Windy.com on February 4, 2025, shows upcoming weather forecasts for San Francisco. This image, taken from Windy.com on February 4, 2025, shows upcoming weather forecasts for San Francisco. Windy.com
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