Deadliest Blizzard in History

Date: February 3, 1972 • Location: Tehran, Iran

The Iran blizzard of February 1972 was the deadliest blizzard in history, as recorded by the Guinness Book of Records. A week-long period of low temperatures and severe winter storms, lasting 3–9 days in February 1972, resulted in the deaths of over 4,000 people. Storms dumped more than 7.9 metres of snow across rural areas in northwestern, central and southern Iran. The blizzard came after four years of drought.