Photos: Skiing in sunny San Francisco

Photographers line a two-block artificial snow slope in San Francisco's tony Pacific Heights neighborhood on Thursday. The ski ramp was set up for a promotional ski-jump competition by ski wax and apparel company Icer.

Olympic gold medalist skier Jonny Moseley, who helped set up San Francisco's urban ski jump, hikes back up the slope on Thursday. Icer trucked in an estimated 200 tons of snow for the run.

A skier takes flight above the urban ski jump at the intersection of Vallejo and Fillmore streets in San Francisco.

Spectators pound on the wall that lines the ski jump on San Francisco's Fillmore Street, egging the athletes on. Temperatures hit the upper 70s during the Icer Air 2005 event.

A downhill skier gains speed for the Fillmore Street jump on Thursday. Concerned about crowds and safety, not everyone who lives in the neighborhood was thrilled about the event.

Some skiers chose to go down the artificial snow slope backward.