Monday, January 30, 2012

It Was One Of Those Days

Guaranteed clear, with widely-scattered slots.

Clear Slot: A local region of clearing skies or reduced cloud cover, indicating an intrusion of drier air. Often appears as a bright area with higher cloud bases on the west or southwest side of a wall cloud. Believed to be a visual indication of a rear flank downdraft.

More:

List of cloud types
Rear flank downdraft
Wall cloud