Winter Weather Advisory: Winter weather conditions, such as cold, ice or snow, are expected to delay travel, cause major problems or create other types of dangerous conditions.
Winter Storm Watch: Usually issued 24 hours before the start of the event. Means potential exists for six-inch accumulations or more of ice and snow.
Winter Storm Warning: Usually issued within 12 hours of the start of the event. Means the occurrence of heavy snow, sleet or freezing rain is expected.
Blizzard Warning: Heavy snow, high winds and dangerously low temperatures are expected. Blizzards can cause severe weather conditions, such as zero visibility and life-threatening wind chill.
Frostbite: A severe reaction to cold exposure that can permanently damage its victims. Symptoms include a loss of feeling and a white or pale appearance in fingers, toes, nose and/or ear lobes.
Hypothermia: Brought on when the body core temperature drops below normal. Symptoms include uncontrollable shivering, slow speech, memory lapses, frequent stumbling and drowsiness.