A cold wedge of high pressure expanded over the area within a light northerly flow while low pressure developed south of the region and tracked northeast along the coast. The combination of moisture associated with the passing low and cold temperatures associated with the entrenched wedge of high pressure eventually caused light rain to freeze during early morning hours. Several bridges were shut down around the Charleston Metropolitan area as a trace to a few hundredths of an inch ice accumulated by the Friday morning commute. A peak storm total ice accumulation of 0.03 inches occurred at the National Weather Service office in North Charleston, SC.

Winter Weather in INLAND BERKELEY, SOUTH CAROLINA
From 29-DEC-17 02:00:00 to 29-DEC-17 09:00:00 (EST-5)
Reported by: NWS Employee

NWS employees and CoCoRahs reports indicated light ice accumulation on cars and trees in the College Park area as well as on the surface near the Old Santee Canal State Park. Estimated ice accumulation was as high as 0.02 inches near Terry Town, SC.

Winter Weather in NORTHERN COLLETON, SOUTH CAROLINA
From 29-DEC-17 04:00:00 to 29-DEC-17 09:00:00 (EST-5)
Reported by: Broadcast Media

The media reported light icing on metal surfaces in the Walterboro, SC area.

Winter Weather in DORCHESTER, SOUTH CAROLINA
From 29-DEC-17 02:00:00 to 29-DEC-17 09:00:00 (EST-5)
Reported by: Public

The public reported minor ice accumulation on elevated surfaces such as automobiles, table tops and grills in the Knightsville area. Light icing was also reported near Greg's Landing.

Winter Weather in TIDAL BERKELEY, SOUTH CAROLINA
From 29-DEC-17 02:00:00 to 29-DEC-17 09:00:00 (EST-5)
Reported by: Broadcast Media

The media and trained spotters reported a light glaze of ice on cars and shrubs in the Wando area. The Don Holt Bridge was also reported closed due to icing during the morning commute.

Winter Weather in CHARLESTON, SOUTH CAROLINA
From 29-DEC-17 02:00:00 to 29-DEC-17 09:00:00 (EST-5)
Reported by: Broadcast Media

The media, NWS employees and the public reported a thin glaze of ice covering cars, fences, road signs, elevated structures and various vegetation such as trees and plants above the ground in Charleston, North Charleston, Mt Pleasant, James Island, Johns Island, West Ashley, Redtop, Rantowles, Meggett and Cainhoy, SC. Several areas also experienced a thin layer of ice on grass and roadways, especially on elevated bridges in Charleston, SC and Mt Pleasant, SC. The greatest storm total ice accumulation in Charleston County was 0.03 inches, which occurred at the National Weather Service office in North Charleston, SC. Elsewhere, storm total ice accumulation ranged from a trace to a few hundredths of an inch. The greatest impact associated with the ice accumulation was the closing of major bridges and overpasses in the Charleston, SC Metropolitan area including: Arthur Ravenel Bridge, Isle of Palms Connector, Ben Sawyer Bridge, Northbridge and the I-26/Cosgrove Ave overpass.

Winter Weather in BEAUFORT, SOUTH CAROLINA
From 29-DEC-17 04:00:00 to 29-DEC-17 09:00:00 (EST-5)
Reported by: Broadcast Media

The media along with social media reports indicated minor ice accumulation on elevated surfaces such as trees and roadway signs in Beaufort, Lady's Island and Burton, SC.