Source: R1 / CanvaAn extended stretch of dangerous cold will grip Maryland through the weekend, with forecasters warning residents to prepare for life-threatening wind chills during the early morning hours. The harshest conditions are expected before 9 a.m. each day, when wind chills could range from zero to 20 degrees below zero. Officials are urging residents to take the cold seriously and check on family members, neighbors and anyone who may be vulnerable. Prolonged exposure to temperatures this low can quickly lead to frostbite or hypothermia. The bitter cold also raises the risk of frozen or burst pipes and potential water main breaks.