Dense fog and coastal flood advisories are in effect for the Charleston area until 9 a.m., the National Weather Service reports.

Areas of fog are expected to clear in time for partly sunny skies this afternoon, the Weather Service said. Highs will be in the mid 70s with lows around 60. Winds will reach up to 10 mph.

Friday: Dense fog is expected in the morning with mostly cloudy skies. Highs will be in the mid 70s with lows around 60. A 20 percent chance of rain is expected with winds up to 15 mph.

Saturday: Patchy fog is expected in the morning with mostly cloudy skies. A 40 percent chance of rain is expected with highs around 70 and lows in the mid 50s. Winds will reach up to 10 mph.