RETROGRESSION In meteorology, it is the movement of a weather system in a direction opposite to the direction of the basic flow in which it is embedded. Often used in reference to a long wave trough or other macroscale feature.
Retrogression (or Retrograde Motion) - movement of a weather system in a direction opposite to that of the basic flow in which it is embedded; usually refers to a closed low or a longwave trough which moves westward ...
Retrogression or retrograde motion means motion that is backwards from the usual way things move in the Northern Hemisphere extratropics - which is from west to east.
Throughout this evolution, retrogression of the large-scale atmospheric circulation features is observed in the eastern Pacific-North American sector.
retrogression). An East Coast Low is an example of a cut-off low. A cut-off low is often accompanied by a blocking high. "Cut-off low" and "closed low" often are used interchangeably to describe low pressure centres aloft.
retrogression). "Cutoff low" and "closed low" often are used interchangeably to describe low pressure centers aloft. However, not all closed lows are completely removed from the influence of the basic westerlies.
completely displaced (cut off) from basic westerly current, and moves independently of that current. Cutoff lows may remain nearly stationary for days, or on occasion may move westward opposite to the prevailing flow aloft (i.e., retrogression).
Response TimeIn hydrologic terms, the amount of time in which it will take a watershed to react to a given rainfall eventRetrogression(or Retrograde Motion) - Movement of a weather system in a direction opposite to that of the basic flow in ...
 See also: Surface, Temperature, Forecast, Meteor, Light
  
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