[ w i n d s t o r m s   :   g l o s s a r y ]

Below are definitions of important windstorm terms.

• black blizzard: a popular term for a dust storm
• dust devil: a small, short-lived dust vortex that whirls along at 20 mph (3 kph) and about 1,640 feet (500 m) up in the air; created by ground heating
• vortex: a rapidly whirling spiral

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