BlowingA descriptor used to amplify observed weather phenomena whenever the phenomena are raised to a height of 6 feet or more above the groundBlowing Dust AdvisoryThis product is issued when widespread, synoptically driven blowing dust is reducing visibilities to 1 mile or less, but greater than ¼ mile. Winds of 25 mph or greater are usually required. Generally for a duration of longer than 90 minutes. Blowing Dust or SandStrong winds over dry ground, that has little or no vegetation, can lift particles of dust or sand into the air. These airborne particles can reduce visibility, cause respiratory problems, and have an abrasive affect on machinery. A concentration reducing the visibility to ¼ mile or less often poses hazards for travelers.Blowing Dust WarningThis product is issued when widespread, synoptically driven blowing dust is reducing visibilities to ¼ mile or less. Winds of 25 mph or greater are usually required. Generally for a duration of longer than 90 minutes.Blowing SnowBlowing snow is wind-driven snow that reduces surface visibility. Blowing snow can be falling snow or snow that has already accumulated but is picked up and blown by strong winds. Blowing snow is usually accompanied by drifting snow.Blowing Snow AdvisoryIssued when wind driven snow reduces surface visibility, possibly, hampering traveling. Blowing snow may be falling snow, or snow that has already accumulated but is picked up and blown by strong winds.
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