At 12:24 p.m. on Thursday, the National Weather Service issued an extreme cold warning valid from Friday 7 p.m. until Saturday 1 p.m. for Northern St. Lawrence, Northern Franklin, Eastern Clinton, Southeastern St. Lawrence, Southern Franklin, Western Clinton, Western Essex, Eastern Essex and Southwe stern St. Lawrence.The weather service comments, “Dangerously cold wind chills of 20 to 40 degrees below expected.” ...read more read less