Blizzard

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Autumn · Winter

Dry season · Wet season

Thunderstorm · Supercell
Downburst · Lightning
Tornado · Waterspout
Tropical cyclone (Hurricane)
Extratropical cyclone
Winter storm · Blizzard · Ice storm
Dust storm · Firestorm  · Cloud

Drizzle · Rain  · Snow · Graupel
Freezing rain · Ice pellets · Hail

Meteorology · Climate
Weather forecasting
Heat wave · Air pollution

A blizzard is a severe storm condition characterized by low temperatures, strong winds, and can include heavy snow. By definition, the difference between blizzard and a snowstorm is the strength of the wind. To be a blizzard, a snow storm must have winds in excess of 56 km/h (35 mph) and reduce visibility to 400 metres (1,300 ft) or less and must last for a prolonged period of time — typically three hours or more.[1] Ground blizzards require high winds to stir up already fallen snow.

Blizzards can bring near-whiteout conditions, and can paralyze regions for days at a time, particularly where snowfall is unusual or rare. The 1972 Iran blizzard, which caused approximately 4000 deaths, was the deadliest in recorded history.

Contents

Historic events

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