Until then, forecasters said residents should be prepared for rain, even if not quite so much. The rain - what little there has been so far - spawned from a low-pressure system spinning offshore that is expected to stay around for a few days. The Friday storm is probably on track to be the wettest overall.” “That one is probably going to be most impactful on the coastal ranges and less so in the interior valley. “This next one is looking to be more plentiful in terms of rain than the one that just went through,” Gass said. The next system is expected to bring a wider, heavier wave of rain beginning Wednesday and lingering into Thursday, Gass said. Seven-hundredths of an inch fell in Olema Valley and three-hundredths of an inch on Mount Tamalpais’ Middle Peak, according to the weather service. The weather service said one-third of an inch of rain fell in Santa Rosa, the wettest spot in the region.

“We did see the first system really covering more of the North Bay than anything, and we did get some rain there,” meteorologist Roger Gass said Tuesday afternoon.

The opener in a three-system storm series kicked off Tuesday with a punch less powerful than expected, but the action may be to come, National Weather Service forecasters said.

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