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Dust storm warning information


A dust storm warning (SAME code: DSW) is issued by the National Weather Service in the United States when blowing dust is expected to frequently reduce visibility to 14 mile (400 m) or less, generally with winds of 25 miles per hour (40 km/h) or more.[1]

Beginning November 1, 2018, the National Weather Service issued these dust storm warnings in a polygon- and storm-based format, similar to the format of severe thunderstorm and tornado warnings. The zone-based dust storm warning was replaced by the new blowing dust warning. In addition to the new dust storm warning format, a lesser-impact dust advisory will be issued by the National Weather Service if the criteria for a warning are not met and if travel impacts are still expected.[2]

  1. ^ National Weather Service. "Dust Storm definition". National Weather Service. Retrieved February 6, 2013.
  2. ^ Hawkins, Michelle (October 25, 2018). "Service Change Notice 18-90 Updated" (PDF). National Weather Service.

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