https://www.mercurynews.com/2022/03/27/storm-tracker-map-when-will-rain-arrive-in-the-bay-area/

A storm that could bring close to a half-inch of rain to much of the Bay Area — and perhaps 2½ inches in the Santa Cruz Mountains — is expected to arrive on Sunday evening.

The wind ahead of the storm was already in evidence by 1 p.m.; it’s expected to increase until the rain starts falling, around 6 p.m. in San Francisco and on the Peninsula, and an hour or two after that in the South Bay and Contra Costa County.