At 12:05 p.m. on Thursday, the National Weather Service released a cold weather advisory valid from 7 p.m. until Friday 11 a.m. for Eastern Clinton and Eastern Essex. Wear appropriate clothing, a hat, and gloves.”Understanding cold weather alertsCold weather advisory: Be Aware. A cold weather advisory is issued when seasonably cold air temperatures or wind chill values, but not extremely cold values, are expected or occurring. An extreme cold warning is issued when dangerously cold air temperatures or wind chill values are expected or occurring. An extreme cold watch is issued when dangerously cold air temperatures or wind chill values are possible.