A Rec & Park spokesperson told Hoodline that the tree fell around 8 p.m., at the corner of Duboce Avenue and Steiner Street. No injuries were reported, they said, and it's still unclear what brought the tree down.
"A high-wind zone, water saturation, age – these are all potential factors," the spokesperson said.
Because of damage to the overhead wires, inbound N-Judah trains were switching back at Carl Street and Hillway Avenue, while outbound trains rerouted to Castro station, the San Francisco Municipal Transportation Agency (SFMTA) said on Twitter.
In place of the trains, bus shuttles operated between Church & Duboce and 19th & Judah for the remainder of the evening.
It's not the first time a large tree has fallen in Duboce Park. Back in 2011, high winds toppled a giant tree at the same corner; two weeks later, another tree crashed to the ground on the northern side of the park, near Potomac Street.
As for this tree, SF Public Works and Rec & Park crews have been out conducting cleanup last night and this morning. The Rec & Park spokesperson said that repairs to the damaged turf zone around the fallen tree will continue for the next few weeks.