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The NWS San Francisco CA issued a report at 10:28 p.m. on Saturday for showers until 11 p.m. for San Francisco County.
“At 10:28 p.m., Doppler radar tracked a shower over San Francisco, moving northeast at 45 mph,” says the NWS. “Minor damage to outdoor objects is possible.”
The alert is for San Francisco.
The NWS comments, “Monitor the weather situation closely and be alert for threatening weather conditions.”
This alert is in effect until 11 p.m.
What steps to follow when driving in the rain? Turn on headlights – Even in daylight, using headlights can help improve visibility and let other drivers know where you are.While on the road – Opt for the middle lanes and remain on higher ground. Rainwater tends to gather along the road edges.Keep clear of puddles – Driving through puddles or low rainwater areas can cause vehicles to hydroplane or skid out of controlDo not follow large vehicles closely – Large vehicles like trucks or buses can create a spray of water that can reduce your visibility.Avoid flooded zones – If you encounter a flooded road, make a U-turn and go back. The powerful currents of flash floods can carry drivers off the road. Driving through deep water can also damage a vehicle’s mechanical and electrical systems.
What is hydroplaning?
Hydroplaning is when a vehicle starts uncontrollably sliding on wet roads.
This happens when water in front of the tire builds up faster than the vehicle’s weight can push water out of the way. The water pressure then causes the vehicle to rise and slide on a thin layer of water between the tires and the road, making the driver lose control. Hydroplaning is most commonly attributed to three factors:
Vehicle speed – When a vehicle’s speed increases, the tire-traction grip and ability to control the vehicle decreases. Drive at a reduced speed during wet weather.Water depth – The deeper the water, the sooner a vehicle loses traction on the road. It doesn’t matter how deep the water is, even a thin layer can lead to hydroplaning.Tire tread depth – Checking your tire tread before hitting the road is important, as low or no tread can lead to sliding.
In the event of your vehicle hydroplaning, here’s what to know:
Ease off the accelerator – Step off the gas to slow down the vehicle until the tires find traction.Turn into the skid – Turning into the skid can help the vehicle’s tires realign to regain control.Make sure the tires reconnect with the road – During the skid, wait until the tires reconnect with the road and then gently straighten the wheels to regain control.Brake gently as needed – Brake normally if the vehicle has anti-lock brakes and pump brakes gently if in an older vehicle.
Source: The National Weather Service
United Robots California
This story was originally published April 11, 2026 at 10:30 PM.