If rescue is delayed or the weather dictates, build an emergency shelter. If a back or neck injury is suspected, DO NOT move the injured person unless there is danger in leaving them where they are. Hypothermia can strike anytime the temperature is 50 degrees F or below. Watch carefully for warning symptoms - persistent or violent shivering, slurred speech, memory lapses, fumbling hands, and drowsiness. Rain - keep as dry as possible.
Wet clothing causes excessive body heat loss.
Blizzard - postpone your outing. If caught in a blizzard, find suitable shelter from the wind and cold. Remain there until the storm abates. Dense fog - postpone your outing. If caught in a dense fog, proceed with extreme caution.