Quick Answer
If it's too cold to leave your vehicle, you'll likely experience symptoms such as numbness, disorientation, and difficulty breathing within 10-15 minutes. Pay attention to your body's response and take immediate action if you notice these signs. If you're unable to start your vehicle, stay inside with a clear escape route.
Hypothermia Warning Signs
Hypothermia is a serious condition that can occur when your body temperature drops below 95°F (35°C). In extremely cold temperatures, even a short time outside can cause hypothermia. Be aware of the following symptoms: shivering, confusion, drowsiness, and loss of coordination. If you or a passenger experience any of these symptoms, get inside your vehicle and stay there.
Vehicle Safety Precautions
If you’re stranded in your vehicle, ensure it’s set to idle with the window cracked (about 1 inch) to prevent carbon monoxide buildup. Remove any wet clothing and stay dry by using blankets or emergency bivvy sacks. Keep a clear escape route by opening the door slightly, making sure to clear any snow or ice.
Staying Warm Inside the Vehicle
To stay warm inside the vehicle, use a portable heater or a battery-powered warmer (keep a safe distance from flammable materials). If you don’t have a heater, use body heat by huddling together with passengers, sharing blankets, or using sleeping bags. Avoid eating cold food or drinks, as this can make your body temperature drop faster. Keep your vehicle in gear or engage the parking brake to prevent it from rolling.
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