The Bay Area is in line for a shot of light rain Monday night and Tuesday morning, but the heaviest totals will fall well north of San Francisco. Santa Rosa, Napa and the surrounding hills could see up to half an inch, while most of the urban Bay Area will be lucky to pick up more than a tenth.
A low-pressure system has been hovering just off the coast of Central California all weekend, bringing consecutive days of below normal temperatures and cloudy skies. That low will slowly drift toward the southeast on Monday and Tuesday, taking about 36 hours for the center of the storm system to move from the Bay Area toward Los Angeles.
Initially, that means Monday will be another day filled with clouds and cool temperatures. But by Monday night, rain showers will develop on the “backside” of the storm system, moving in from the northeast — an atypical direction for Bay Area rain — and sliding southwest across the North Bay, San Francisco, the Peninsula, and parts of the East Bay through Tuesday morning…