A dense fog advisory for the Charleston area has been extended until 4 p.m., the National Weather Service reports.

Area meteorologists initially reported that a thick layer of fog that blanketed the Lowcountry overnight would clear by noon. But as the morning hours passed by, it became clear that wouldn't be the case along the coast, Weather Service meteorologist Vern Beaver said.

"It's just not dissipating and really not moving," Beaver said.

According to Beaver, the fog will remain along the coastal area until a cold front that's passing through Lowcountry pushes it out to sea.

Mostly cloudy skies and scattered storms are also expected today, according to the Weather Service.

A 50 percent chance of rain is expected with highs in the mid 70s and lows around 40. Winds will reach up to 20 mph.

Thursday: Mostly sunny skies are expected with highs in the upper 50s and lows around 40. A slight chance of rain is expected with winds up to 15 mph.

Friday: Mostly cloudy skies are expected with a 50 percent chance of rain. Highs will be in the mid 50s with lows in the upper 40s. Winds will reach up to 10 mph.