Probability of Dying from a Winter Storm

Winter storms cause approximately 470 deaths per year in the United States, according to National Weather Service data. Deaths result from hypothermia and cold exposure (about 35%), carbon monoxide poisoning from generators and heaters (about 20%), vehicle crashes on icy roads, overexertion from shoveling snow, and falls on ice.

The risk is highest in the central and northern United States, among older adults, people experiencing homelessness, those in poorly insulated housing, and individuals who work outdoors. Major winter storms can cause widespread power outages (Winter Storm Uri in Texas in 2021 killed an estimated 246 people and left 4.5 million without power), making heating loss a significant factor in winter storm mortality.

Preparation includes having emergency supplies (food, water, medications, flashlights, batteries, blankets), ensuring proper home insulation and heating, keeping vehicles winterized and fueled, using generators outdoors only (never in garages or enclosed spaces), and avoiding overexertion when shoveling snow (which causes about 100 deaths per year from heart attacks). Carbon monoxide detectors are essential for any home using fuel-burning heating equipment.