A very cold night is on tap tonight as high pressure settles in across the area, bringing winds down but also helping to create ideal radiational cooling conditions that will send lows to the low 20s across much of the metro by Friday morning, with 20s even reaching the beaches. Further inland, we could see temperatures dip into the upper teens. A Cold Weather Advisory is in effect for Berkeley and Dorchester counties where the most chilly conditions are expected. This’ll be pipe-busting cold so make sure you’ve got a faucet dripping, plants are covered, pets are inside and warm, and the vulnerable people in your life are accounted for and safe.