extratropical low (sometimes called extratropical cyclone, extratropical storm)—Any cyclone that is not a tropical cyclone, usually referring to the migratory frontal cyclones of middle and high latitudes.
An extratropical low or an area of sustained surface winds of 34 (39 mph) to 47 knots (54 mph).
NOAA National Weather Service - Cite This Source - This Definition ...
Related terms: extratropical low and extratropical storm.
EYE
The center of a tropical storm or hurricane, characterized by a roughly circular area of light winds and rain-free skies.
Extratropical LowA low pressure center which refers to a migratory frontal cyclone of middle and higher latitudes.
It refers to an extratropical low or an area in which gale force winds of 34 knots (39 mph) to 47 knots (54 mph) are "expected" by a certain time period.
Developing Storm Used in the National Weather Service High Seas Forecast. It refers to an extratropical low or an area in which storm force winds of 48 knots (55 mph) or greater are expected by a certain time period.
EXTRATROPICAL CYCLONE
Any cyclone not of tropical origin. Generally considered to be a migratory frontal cyclone found in the middle and high latitudes.
Related terms: extratropical low and extratropical storm.
The term extratropical is typically used when a tropical cyclone moves away from the tropics and moves poleward into cooler waters thus losing its tropical characteristics.
Related terms: extratropical low and extratropical storm.
 See also: Circulation, Surface, Report, Normal, Maximum
  
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