There is a COASTAL FLOOD ADVISORY from 8 a.m. to 3 p.m. Thursday for the San Pablo Bay, the Bay Shoreline of San Francisco, and additionally for the Pacific Coastline from 9 a.m. Monday to 3 p.m. Thursday.
Sonoma County officials are stepping up preparations for a potentially wet winter, declaring an emergency Tuesday as forecasters warn that a strong El Niño could bring unusually heavy rain.
Nolo was expected to strengthen to a major hurricane on Saturday.
At state warehouses, millions of sandbags and other flood-fighting supplies are being staged for rapid deployment. Marin County Public Works officials say the materials will supplement an already extensive local inventory as communities prepare for winter storms and unusually high King tides.
Lowell is a Category 3 hurricane as of Monday morning