Flood in San Francisco County, California

Photos and videos on X (formerly Twitter) showed flooding at the intersection of Alameda and henry Adams Streets. A car was stuck in the water and video showed water extending up the first step in a flight of stairs.

The first atmospheric river of the winter storm season created flooding across the North Bay between November 20 and 23. The atmospheric river was accompanied by a very rapidly intensifying cyclone that deepened by 66 millibars within 24 hours, easily meeting the criteria for bomb cyclogenesis. The greatest impacts were concentrated across the North Bay as the river stalled over the region. The North Bay valleys received nearly a foot of rain in three days and the mountains received as much as 22.57 inches (from the Venado gauge).