The latest atmospheric river arrived Wednesday in the Bay Area with a forecast of strong, damaging winds, chances of thunderstorms, and possible snow in the highest peaks.At 2:17 p.m., the National Weather Service issued a bulletin for a severe thunderstorm warning for San Francisco and the northwestern Peninsula as radar indicated a line of thunderstorms coming ashore from the coast where a special marine warning had been issued the previous hour.

The first in a series of storms that will make the pleasant weather of the past week seem a distant memory left the ground wet, the air cold and the tree leaves rippling through most of the region early.