Northern California was placed under a wind advisory by the National Weather Service on Wednesday at 12:10 a.m. The advisory is valid between 8 a.m. and 8 p.m.

The NWS San Francisco CA said, “South winds 20 to 30 mph with gusts up to 55 mph expected.”

“Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result,” the NWS said. “Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Secure loose outdoor objects that could be blown around or damaged by the wind.”

The full list of affected locations includes:

Marin Coastal Range
Sonoma Coastal Range
North Bay Interior Mountains
Coastal North Bay including Point Reyes National Seashore
North Bay Interior Valleys
San Francisco Bay Shoreline
San Francisco Peninsula Coast
East Bay Interior Valleys
Santa Cruz Mountains
Santa Clara Valley Including San Jose
Eastern Santa Clara Hills
East Bay Hills
Northern Monterey Bay
Southern Salinas Valley/Arroyo Seco and Lake San Antonio
Santa Lucia Mountains and Los Padres National Forest
Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park
Northern Salinas Valley/Hollister Valley and Carmel Valley
Southern Monterey Bay and Big Sur Coast
San Francisco County