Dangerous waves and tidal surges are expected to hit San Mateo County between 7:30 a.m. and 8 a.m.
County officials are advising residents in the low-lying areas west of Highway 1 to move to ground east of the highway, according to the county's emergency alert system.
Residents in the Linda Mar area of Pacifica are advised to evacuate to the east of Adobe Drive.
Those in El Granada should evacuate to the east of Coronado Street.
Evacuation shelters are being established at Terra Nova High School at 1450 Terra Nova Blvd., Oceana High School at 401 Paloma Ave., Farallone View Elementary School at 1100 Le Conte Ave., and Pescadero High School at 350 Butano Cutoff, officials said.
Residents are advised to monitor local media for additional information.