SAN FRANCISCO (KRON) -- Widespread rain showers are expected to begin across the Bay Area Wednesday and could last through the week, according to the National Weather Service. The weather service is advising residents to be prepared for "cool and wet weather" across the region for Wednesday night in to Thursday morning. Spare the Air alert issued for New Year’s Day The expected wet weather will bring an increased chance of flooding with a coastal flood advisory going into effect at 5 a.m. Wednesday and lasting through 2 p.m. Sunday. Tides are expected to peak on Friday and Saturday, according to the California King Tides Project. The San Francisco Department of Emergency Management is warning of up to 1.8 feet of coastal flooding as New Year's Eve approaches. Watch: Video captures massive rainfall in San Francisco, flooded roads during Christmas storm "Help your community prepare for the upcoming storm by clearing out storm drains and checking in with friends and family who may need assistance during extreme weather," the department advised. Stick with KRON4 for ongoing coverage of the holiday storms. ...read more read less