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CNRFC/HPC Quantitative Precipitation Forecasts (QPF)
QPF forecasts are issued several times daily by the
Hydrometeorological Prediction Center. QPF represents the total amount
of liquid precipitation, in inches, expected during a specified period,
typically 6 or 24 hours, at any point or basin in the forecast area.
The river forecast models at the CNRFC use 6-hour QPF/QPE. QPE, or Quantitative
Precipitation Estimate, represents the total amount of liquid equivalent
precipitation, in inches, that has been observed during the specified
period at a point or basin. HPC QPF guidance is reviewed by HAS meteorologists
at the CNRFC and modified when appropriate.
CNRFC Text QPF Products
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Description
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6-hour Basin QPF and Snow Levels for the next 24 hours
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6-hour Point QPF and Snow Level forecasts for
the next 24 hours and 24-hour forecasts for days 2 and 3 (12UTC-12UTC)
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Observed Basin Mean Areal
Precipitation for the past 24 hours and Basin QPF/Snow Levels
for the next 24 hours (Oct 15 - Apr 15 only)
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CNRFC Graphical QPF Products
6-hour and 24-hour QPF for the next 3 days arranged
by Hydrologic Service Area. NOTE: Images are updated 4 times daily, so it is recommended that you
refresh your browser often to ensure that you are viewing the latest QPF images.
Please Note: The areas in southern California outlined in black delineate the areal coverage of the larger fire complexes that burned in October 2003.
National QPF Guidance Products
The Hydrometeorological
Prediction Center (HPC) provides basic hydrometeorological analysis
and forecasts for National Weather Service Field Offices and the entire
meteorological community. HPC meteorologists serve as experts in quantitative
precipitation forecasting and numerical model interpretation. Products
provided by the HPC include surface analyses, outlooks for heavy rain
and snow, as well as guidance weather forecasts through five days.
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HPC 6-Hour QPF (color)
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HPC 6-Hour QPF (color fill)
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HPC 24-Hour QPF (color)
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HPC 24-Hour QPF (color fill)
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HPC QPF Discussions
Quantitative Precipitation Forecast Discussion (QPFPFD)
Excessive Rainfall Discussion (QPFERD)
Heavy Snow Discussion (QPFHSD)
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www.nws.noaa.gov 
