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One of the causes of obscuration, in meteorological terms, is a reduction in visibility due to…

  • A
    snow.
  • B
    drizzle.
  • C
    sand.
  • D
    hail.

Obscuration:

BR - Mist
FG - Fog
FU - Smoke
VA - Volcanic Ash
DU - Widespread Dust
SA - Sand
HZ - Haze

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