Photo: San Francisco Landslide

150 people were evacuated as "20 school buses worth" of boulders and dirt (words from Fox News on-air) came crashing down from the hill above homes and businesses in San Francisco Tuesday morning. Weather could be the cause, Forbes says, as the ground was saturated. But less than half an inch of rain has fallen there in the previous 24 hours to this morning, with an inch in the last week, according to NWS maps.

A woman, lower right, looks out her back porch near the edge of a cliff which gave way early Tuesday, Feb. 27, 2007, in San Francisco. A landslide sent rocks and boulders tumbling down onto an apartment building early Tuesday, sending 150 residents of San Francisco's North Beach district into the streets. No injuries were reported, but city engineers were assessing the safety of the remaining hillside as well as possible damage from the massive pile of boulders and mud lodged against an apartment building and a night club at the bottom of the hill, Fire Department Lt. Ken Smith said. (AP Photo/Ben Margot)