About 150 to 200 feet of power lines came down near Judah Street and 22nd Avenue, and near Duboce Avenue and Fillmore Street, at about 5:55 p.m., Muni spokesman Paul Rose said.
No injuries were reported, but the N-Judah line stopped service near the fallen lines and did start running again until about 10:10 p.m., Rose said.
Up to 5,000 PG&E San Francisco lost power due to the downed lines, utility spokesman J.D. Guidi said.
Those customers had their power restored in the early morning hours, Guidi said.