Quantitative Precipitation Forecast

Quantitative Precipitation Forecasts (QPFs) are issued by the Weather Prediction Center (WPC) and incorporate the latest surface and upper air analyses, radar data, satellite data, and model guidance from the NAM, NGM, GFS and RUC forecast models.  The 5-day QPF map shows the total precipitation expected over the 5-day period between the “Valid” and “Thru” dates shown in the lower left corner of the map. The contour intervals (left side) are in inches. Any closed contour with a forecasted value over 1” is marked with an “x”, and the forecasted value is shown on the map. For the 7-Day QPF, we add to the 5-day product a 48-hour forecast for Days 6-7, which is also prepared by medium-range forecasters. Both forecasts are created twice per day, once at 09Z and again at 21Z.

More information about the QPFs from NOAA WPC is available here.