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Quantitative Precipitation Forecast (QPF)

Associated Agencies

NOAA / National Weather Service / National Centers for Environmental Prediction / Weather Prediction Center (WPC)

Forecasters at the National Weather Service's Weather Prediction Center (WPC) and its predecessor organizations have been making Quantitative Precipitation Forecasts since 1960. Quantitative Precipitation Forecasts, or QPFs, depict the amount of liquid precipitation expected to fall in a defined period of time. In the case of snow or ice, QPF represents the amount of liquid that will be measured when the precipitation is melted. Precipitation amounts can vary significantly over short distances, especially when thunderstorms occur, and for this reason QPFs issued by the WPC are defined as the expected "areal average" (on a 20 x 20 km grid) in inches. 

Interactive Map: Quantitative Precipitation Forecast

Predicted Inches of Precipitation
Predicted Inches of Precipitation

How to

How to use this site:

  • Select the Quantitative Precipitation Forecasts (QPFs) Day/Days of choice
  • Select map to enlarge/save image
  • Below map images, the National Weather Service allows you to download WPC QPFs in GRIB2, Shapefiles, or KML formats


NWS Weather Prediction Center (WPC) Quantitative Precipitation Forecasts: View individual days or multi-day totals Outlooks & Forecasts Page: View 1-day and 7-day QPFs alongside other outlooks and forecasts