Special Weather Statement issued January 24 at 5:15AM EST by NWS Charleston SC

Temperatures in the low to middle 20s across many areas this
morning will remain below freezing through 9 or 10 AM this
morning. As a result, many roadways will remain hazardous for
travel with compact snow/ice and black ice. This includes primary
roads, secondary roads, and back roads, plus bridges and
overpasses.

Black ice is difficult to see and distinguish from dry surfaces.
The deceptive nature of black ice can catch you unaware while you
are driving or walking, causing you to lose control of your motor
vehicle or to slip and fall.