obscuration

From Glossary of Meteorology
(Redirected from Obscurations)
  1. (Also called obscured sky cover.) In U.S. weather observing practice, the designation for the sky cover when the sky is completely hidden by surface-based obscuring phenomena.

It is encoded "X" in aviation weather observations; it always constitutes a ceiling, the height of which is the value of vertical visibility into the obscuring phenomenon.
Compare partial obscuration.

  1. A surface-based obscuring phenomenon.
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