Flood watch issued for San Francisco starting late Saturday afternoon

A flash flood watch was issued for San Francisco, starting the afternoon of Saturday, Jan. 7 and running through Sunday. A flash flood watch was issued for San Francisco, starting the afternoon of Saturday, Jan. 7 and running through Sunday. Photo: City Of San Francisco / Twitter Screen Grab Photo: City Of San Francisco / Twitter Screen Grab Image 1 of / 52 Caption Close Flood watch issued for San Francisco starting late Saturday afternoon 1 / 52 Back to Gallery

The National Weather Service issued a flood watch for San Francisco starting Saturday at 4 p.m. and running through Sunday.

A roaring atmospheric river moving into Northern California will drench the city this weekend with a total of two to four inches falling. The heaviest rains will hit Sunday morning.

The soaking could cause flash flooding across the city due to runoff from storm drains becoming overwhelmed.

The City of San Francisco sent out text alerts and issued a statement saying, "urban flooding may occur in areas that have historically flooded." Folsom and 17th is one area of the city that has flooded in the past.

San Francisco residents may receive up to 10 free sandbags each for pickup at 2323 Cesar Chavez Street (Marin/Kansas street gate), Saturday and Sunday 8:00 a.m. to 2 p.m.

Residents are also recommended to keep catch basins near their homes clear of leaves and debris. If you're unable to sweep the area yourself, you can call 3-1-1 for assitance.