SAN FRANCISCO (KRON, BCN) — The roads in the Bay Area were expected to be wet and slippery Thursday afternoon, as commuters head home from work during the P.M. drive, according to the National Weather Service.

Heavier showers are forecast for Thursday afternoon and Thursday evening, although the showers will be scattered, forecaster Steve Anderson said.

“We’re not done yet,” Anderson said. “It will be another wet one this afternoon, here and there.”

Forecasters cannot say how much rain will fall Thursday afternoon since the showers will be scattered, Anderson said.

The rain that fell Wednesday night and Thursday morning was about what was expected.

San Francisco reported a quarter-inch of rain, while Oakland reported .23 inches, Anderson said. San Jose saw .10 inches, while Concord received .27 inches and Santa Rosa reported .78 inches, he said.

A gauge on Mt. Tamalpais collected 2.86 inches, he said.Winds gusted up to 50 mph early Thursday morning in the North Bay mountains, Anderson said.

Thursday on the coast, a high surf warning goes into effect at 4 p.m. and lasts until 4 p.m. Friday for the Bay Area, according to Anderson.

Waves of 20 to 30 feet are forecast for some areas such as Mavericks, a popular surfing location near Half Moon Bay, Anderson said.

At Ocean Beach, waves could reach 15 feet, he said.The surf conditions could be deadly for anyone except professional surfers, Anderson said. He also warned people to avoid being near shore.

“Be advised to stay well back from the water the next day or two,” Anderson said.