Attempting to push your car, shovel heavy drifts, and other difficult chores during a blizzard my cause a heart attack - even for someone in apparently good physical condition. Stay in your vehicle. Do not attempt to walk out of a blizzard.
Disorientation comes quickly in blowing and drifting snow.
You are more likely to be found when sheltered in your car. Keep fresh air in your car. Freezing wet snow and wind driven snow can completely seal the passenger compartment. Beware of the gent killers, carbon monoxide and oxygen starvation. Run the motor and heater sparingly, and only with the downwind window open for ventilation.