Quantitative precipitation forecast
- Quantitative precipitation forecast
According to the United States [http://www.weather.gov National Weather Service's] [http://www.nws.noaa.gov/ndfd/index.htm National Digital Forecast Database] , The Quantitative Precipitation Forecast (abbreviated QPF) is the expected amount of liquid precipitation (in hundredths of inches) accumulated over a six hourly period. A QPF will be specified when a measurable (1/100th of an inch or more) precipitation type is forecast for any hour during a QPF valid period. NDFD valid periods for QPF are 6 hours long beginning and ending at 0000, 0600, 1200 and 1800 GMT.
QPFs can be found at the [http://www.hpc.ncep.noaa.gov/qpf/qpf2.shtml Hydrometeorological Prediction Center]
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