Closed Low: A region of low pressure distinguished by a center of counterclockwise circulation (in the Northern Hemisphere), and is surrounded by one or more isobars or height contours. Closed lows aloft (i.e., above the surface) may become disconnected from the primary westerly flow and thus progress eastward more slowly. It is important to note that a cutoff low is a closed low, but not all closed lows are cutoff lows.

 

Related Words

Closed Low: A region of low pressure distinguished by a center of counterclockwise circulation (in the Northern Hemisphere), and is surrounded by one or more isobars or height contours. Closed lows alof . . . View Full Definition

Cut-Off Low: A closed cold core low completely removed from the primary westerly flow. Cutoff lows may remain detached from the westerlies for days while exhibiting very little forward (eastward) progres . . . View Full Definition

Mainstream Flow: The flow in a part of the fluid (e.g., in a tidal creek) that is well above the bottom or well away from a surface and essentially not under the influence of the boundary layer (see boundary layer).

Lowsiding: Lowsiding occurs when a motorcycle falls over and drops the rider to the ground. Some riders have been known to deliberately drop their bikes to avoid an accident. This is usually a bad idea . . . View Full Definition