"Life-Threatening" Cold Warning: US Faces Historic Winter Storm

A massive and "extremely dangerous" winter storm is moving across the United States. The National Weather Service (NWS) has issued a severe warning. The agency states the storm "will pose a life-threatening risk of hypothermia." Hypothermia is a dangerous medical condition where the body loses heat faster than it can produce it. The storm is expected to bring record-breaking cold, heavy snow, and strong winds. It will disrupt travel and daily life for millions of Americans. Major airlines have already canceled thousands of flights. The severe weather may also affect a major NFL playoff game scheduled for this weekend. Officials urge people to prepare emergency kits and avoid travel. They advise staying indoors during the coldest periods.