A wind advisory is in effect for Christmas Day in Pleasanton and the Tri-Valley as a sharp cold front advances on the California Coast, according to the National Weather Service.
Rain is expected here today with a high temperature of 55 degrees by mid-day. Rain showers will become lighter overnight when the temperature should dip to 44 degrees.
Wind speeds will be strongest from mid-morning through mid-afternoon, and the weather service has issued the advisory for 7 a.m. until 4 p.m. today for portions of all Bay Area counties except for Solano County. Southerly winds are expected to kick up beginning at sunrise, with the strongest winds expected along the coast and reaching into the East Bay hills and Mount Diablo. Wind speeds of 20 to 30 mph are expected, along with occasional gusts of 45 mph.
Motorists should take extra care, as the weather service advises that the winds will make driving more difficult. High profile vehicles will be most susceptible to the gusts and wind-swept debris could litter roadways. Small tree branches and other unsecured light items could also be blown into roadways, the weather service said.
Power disruptions may occur if winds down power lines, and the weather service recommends residents be prepared for such scenarios while the advisory is in effect.
The Weather Service is calling for a 40% chance of rain tomorrow with the temperature rising to a high of 56 degrees.
Christmas Day's record high temperature was 78 degrees in 1946, recorded at the Livermore airport.