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  Home > Glossary

  Here are the results for the letter q
QG
Quasigeostrophic
QN
Question
QPF
Quantitative Precipitation Forecast. A spatial and temporal precipitation forecast that will predict the potential amount of future precipitation for a specified region, or area.
QPF Discussion
This HPC forecast discussion is directed completely to explaining manual forecasts of areas in the contiguous 48 states expected to receive 1/4 inch or more precipitation during a 24-hour period. The manual forecasts are explained in terms of initial conditions and differences and/or similarities in the numerical model forecasts. General confidence in the manual forecast is expressed where it is appropriate and possible alternatives may be offered. This product is issued 3 times a day.
QPFERD
NCEP Excessive Rainfall Discussion
QPFHSD
NCEP Heavy Snow Discussion
QPFPFD
NCEP Precipitation Forecast Discussion
QSTNRY
Quasi-stationary - describes a low or high pressure area or a front that is nearly stationary.
QTR
Quarter
QUAD
Quadrant
Quadrature
The component of the complex signal that is 90 degrees out of phase with the inphase component. This component lies along the imaginary axis the complex plane.
Quality of Snow
The amount of ice in a snow sample expressed as a percent of the weight of the sample.
Quantitative Precipitation Estimate (QPE)
A spatial and temporal analysis estimating the amount of precipitation that has occurred using a variety of techniques including observational and remote sensing data.
Quantitative Precipitation Forecast
A spatial and temporal precipitation forecast that will predict the potential amount of future precipitation for a specified region, or area.
Quasi-stationary
(abbrev. QSTNRY)- Describes a low or high pressure area or a front that is nearly stationary.
Quasi-stationary Front
A front which is nearly stationary or moves very little since the last synoptic position. Also known as a stationary front.
Quiescent Prominence (Filament)
Long, sheet-like prominences nearly vertical to the solar surface
Quiet
Solar activity levels with less than one chromospheric event per day.

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     Page last Modified: 25 June, 2009 1:01 PM