Snowstorm blizzard

Snowstorms and blizzards are extreme weather phenomena affecting millions annually in high-latitude regions, with strong winds and reduced visibility.

About this subject

A blizzard, technically defined as sustained winds or frequent gusts above 35 mph (56 km/h) with blowing snow reducing visibility to less than a quarter mile (400 meters) for at least three consecutive hours, is distinct from a regular snowstorm. While snowfall is involved, the key factors are wind and visibility, not accumulation. In regions like the Great Plains of the United States and Canada, blizzards are common, sometimes lasting days. The 1972 Iran blizzard remains the deadliest in history, with over 4,000 fatalities and villages buried under 26 feet (8 meters) of snow. In the United States, the Great Blizzard of 1888 paralyzed the Northeast, causing 400 deaths. Blizzards disrupt infrastructure: power lines snap, roads become impassable, and air travel halts. Modern forecasting has improved warnings, but snowstorms still cause billions in economic losses annually. Notably, the term "blizzard" emerged in the 1870s in the US Midwest, possibly from the German word "blitz" (lightning) combined with local usage for a sudden, violent event.

Frequently Asked Questions

What is the difference between a snowstorm and a blizzard?

A snowstorm is any event with significant snowfall. A blizzard requires sustained winds of at least 35 mph (56 km/h) and visibility below a quarter mile (400 meters) for three consecutive hours.

Where do the worst blizzards occur?

The most severe blizzards occur in the US Midwest, Canada, Russia, and northern Europe. The deadliest blizzard was in 1972 in Iran, with 26 feet (8 meters) of snow.

How to stay safe during a blizzard?

Stay indoors, avoid travel, stock emergency supplies (water, food, blankets), and stay informed via radio or phone. If in a vehicle, remain inside and do not abandon it.