High winds prompt Bay Area advisory

Marin County, Calif. (KTVU and wires) -- The National Weather Service is advising drivers and boaters of a potentially hazardous condition through Monday morning.

High winds in the Bay Area have prompted weather service officials to extend a wind advisory until at 10 a.m. Monday.

The wind advisory affects parts of Alameda, Contra Costa, Marin, Napa, Santa Clara, Sonoma, and Solano counties. Wind gusts could reach 50 mph.

People can encounter treacherous conditions on roadways and waterways, and trees can be knocked down.

The National Weather Service also issued a small craft advisory for an area from Point Arena to Point Reyes, that expired Sunday morning.