San Francisco also experienced a multi-day blackout recently after a fire at a substation in its South of Market District left hundreds of thousands of customers without power. Early Christmas morning, a line of severe thunderstorms moved into Northern California with wind gusts in excess of 70 mph, setting off flash flooding in the San Francisco metro. San Francisco International Airport recorded a wind gust of 72 mph, and numerous gusts to 80 and 90 mph occurred in higher elevations, according to the NWS. San Francisco International Airport recorded a wind gust of 72 mph, and numerous gusts to 80 and 90 mph occurred in higher elevations, according to the NWS. Flooding rain risk continues: About 8 million people in portions of Southern California are in the moderate-risk zone on Christmas Day, according to the Weather Prediction Center.

Source: CNN December 25, 2025 17:18 UTC