obscured sky cover
Also found in: Dictionary.
obscured sky cover[əb′skyu̇rd ′skī ‚kəv·ər]
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
A condition in which the sky, or the dividing line between a cloud and the clear air below, is completely hidden by surface-based obscuring phenomena such as fog, mist, or smoke. Also known as obscured sky cover.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved