Definition
A weather phenomenon in which strong surface winds lift large quantities of dust into the air, sharply reducing surface and inflight visibility, often to less than one statute mile, over a wide area. Dust storms typically occur in arid or drought-affected regions when sustained winds exceed roughly 25 to 30 knots over loose, dry soil.
Plain English
Strong winds pick up dust from dry ground and blow it through the air in such quantity that you cannot see far through it.
Context Anchor
Seen in weather briefings, inflight advisories, and SIGMETs, especially in dry or desert areas where loose dust can be lifted by strong wind.
Why Pilots Care
Dust storms create sudden, widespread visibility loss that can force diversions, delay departures, or make continued flight unsafe.
Grounding Statement
A dust storm can turn a clear-looking route into a moving brown wall where the horizon, ground, and runway are hard to see.
Intuition Check
Do not read dust storms as simply “dusty weather.” In aviation advisories, the term points to blowing dust that can reduce visibility enough to become a serious flight hazard.
Example Sentence 1
A SIGMET was issued for widespread dust storms across western Texas, with surface visibility reported below one mile.
Example Sentence 2
Controllers advised that dust storms had reduced visibility below minimums at the destination airport.