Quasi-stationary front

QUASI-STATIONARY FRONT
A front which is nearly stationary or moves very little since the last synoptic position. Also known as a stationary front.
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Quasi-stationary front
A front that shows little or no horizontal movement. By convention, the term applies to a front this is moving at 5 knots or less.

quasi-stationary front (commonly called stationary front)—A front which is stationary or nearly so; conventionally, a front which is moving at a speed of less than 5 knots is generally considered to be quasi-stationary.
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Quasi-Stationary Front: Front whose position remains almost unchanged during a certain period of time.

Observation WellIn hydrologic terms, a non-pumping well used for observing the elevation of the water table or piezometric surfaceOccluded FrontA composite of two fronts, formed as a cold front overtakes a warm or quasi-stationary front.

occluded frontA composite of two fronts, formed as a cold front overtakes a warm or quasi-stationary front.

A composite of two fronts, formed as a cold front overtakes a warm or quasi-stationary front. Two types of occlusions can form depending on the relative coldness of the air behind the cold front to the air ahead of the warm or stationary front.

stationary front - Same as quasi-stationary front.
statistic - Generally, a number describing some characteristic of a population or samples therefrom. Specifically, an estimate of a statistical parameter computed from a sample.

QUANTITATIVE PRECIPITIATION FORECAST (QPF) A forecast of rainfall, snowfall or liquid equivalent of snowfall. QUASI-STATIONARY FRONT A front which is nearly stationary or moves very little since the last synoptic position.

condition existing when an air mass aloft is in motion relative to another air mass of greater density at the surface. This term is usually applied in the case of warm air ascending the surface of a warm front or quasi-stationary front.

See also: Quasi-Stationary, Stationary front, Front, Precipitation, Forecast