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- A visible aggregate of minute water particles suspended in the atmosphere that reduces visibility to less than 7 statute miles, but greater than or equal to 5/8 statute miles. It does not reduce visibility as much as fog and is often confused with drizzle.
NOAA National Weather Service - Cite This Source - This Definition
- Blowing Dust or Sand, F, FG, fog, Grout Curtain, Ice Crystals, k, sm, Smoke