In pictures: US polar vortex nears end, blamed for 21 deaths
Bitter cold was caused by mass of air known as the polar vortex drifting south from its usual position over North Pole
Tens of millions of Americans braved Arctic-like temperatures on Thursday as low -49 Celsius that paralysed the US Midwest and were blamed for at least 21 deaths.
Officials across multiple states linked numerous deaths to the frigid air. The death toll rose from a previous 12 after at least nine more people in Chicago were reported to have died from cold-related injuries, according to a doctor at the city’s John H Stroger Jr Hospital.
The bitter cold was caused by the mass of air known as the polar vortex drifting south from its usual position over the North Pole.
Homes and businesses used record amounts of natural gas to fight the cold.
Officials across multiple states linked numerous deaths to the frigid air. The death toll rose from a previous 12 after at least nine more people in Chicago were reported to have died from cold-related injuries, according to a doctor at the city’s John H Stroger Jr Hospital.
The bitter cold was caused by the mass of air known as the polar vortex drifting south from its usual position over the North Pole.
Homes and businesses used record amounts of natural gas to fight the cold.