The Weather Predictive Center (WPC) Quantitative Precipitation Forecasts (QPFs) Web Service consists of layers that represent forecasted QPFs for 24 hours up to 7 days. 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. The QPF layers for this web service are defined below.

QPF 24 Hours Day 1 is for the 24 hour time period starting at the valid date/time.

QPF 24 Hours Day 2 is for a 24 hours time period starting at the valid date/time for day 2 (which is 24 hours past day 1).

QPF 24 Hours Day 3 is for a 24 hours time period starting at the valid date/time for day 3 (which is 48 hours past day 1).

QPF 48 Hours Day 4-5 is for a 48 hour time period starting at valid date/time for days 4-5 (which is 72 hours past day 1).

QPF 48 Hours Day 6-7 is for a 48 hour time period starting at valid date/time for days 6-7 (which is 120 hours past day 1).

QPF 6 Hours Day 1 is the forecast for the next 6 hours starting at the valid date/time.

QPF 48 Hours Day 1-2 is the next 2 days forecast starting at the valid date/time.

QPF 72 Hours Day 1-3 is the next 3 days forecast starting at the valid date/time.

QPF 120 Hours Day 1-5 is the next 5 days forecast starting at the valid date/time.

QPF 168 Hours Day 1-7 is for the next 7 days forecast starting at the valid date/time.

The QPF_6_Hour_Intervals provides 6-hour precipitation forecasts through Day 3. The 00-06 hr, 06-12 hr, 12-18 hr, and 18-24 hr files comprise the Day 1 forecast period, 24-30 hr, 30-36 hr, 36-48 hr, and 48-54 hr are Day 2, and the final 4 periods, 54-60 hr, 60-66 hr, 66-72 hr, and 72-78 hrare Day 3.

Update Frequency: Twice a day at 06Z and 18Z

Link to graphical web page: https://www.wpc.ncep.noaa.gov/#page=qpf

Link to data download (shapefile): https://www.wpc.ncep.noaa.gov/qpf/qpf2.shtml

Link to metadata

Questions/Concerns about the service, please contact the DISS GIS team

Time Information:

This service is not time enabled