Skip Navigation Links weather.gov 
NOAA logo - Click to go to the NOAA homepage National Weather Service   NWS logo - Click to go to the NWS homepage
The Weather Prediction Center

 
 

 

Follow the Weather Prediction Center on Facebook Follow the Weather Prediction Center on Twitter
NCEP Quarterly Newsletter
WPC Home
Analyses and Forecasts
   National High & Low
   WPC Discussions
   Surface Analysis
   Days ½-2½ CONUS
   Days 3-7 CONUS
   Days 4-8 Alaska
   QPF
   PQPF
   Flood Outlook
   Winter Weather
   Storm Summaries
   Heat Index
   Tropical Products
   Daily Weather Map
   GIS Products
Current Watches/
Warnings

Satellite and Radar Imagery
  GOES-East Satellite
  GOES-West Satellite
  National Radar
Product Archive
WPC Verification
   QPF
   Medium Range
   Model Diagnostics
   Event Reviews
   Winter Weather
International Desks
Development and Training
   Development
WPC Overview
   About the WPC
   Staff
   WPC History
   Other Sites
   FAQs
Meteorological Calculators
Contact Us
   About Our Site
 
USA.gov is the U.S. Government's official web portal to all federal, state, and local government web resources and services.


About the 5-and 7-Day QPFs

The 5-Day Quantitative Precipitation Forecast (QPF) products are created by adding WPC's 6-hour QPFs for Days 1-5 (a total of 20 6-hour periods). The Day 1-3 forecasts are prepared by our short-range QPF meteorologist, while the Day 4-5 periods are prepared by our medium-range forecasters. For the 7-Day QPF, we add to the 5-day product 6-hour QPFs for the Day 6-7 period; these 6-hour QPFs are also prepared by our medium-range forecasters. Both forecasts are created twice per day, once at 10Z and again at 22Z.

Forecasts are valid from the beginning of Day 1 through the end of Day 5 (or 7), with the 22Z issuance offset by 12 hours. For example, a forecast created at 10Z September 2, 2022, would be valid for the 120-hour period from 12Z September 2, 2022, through 12Z September 7, 2022. The Day 1-5 forecast prepared at 22Z September 2, 2022, would be valid from 00Z September 3, 2022, through 00Z September 8, 2022.

For the Day 1-7 QPF, a forecast created at 10Z September 2, 2022, would be valid for the 168-hour period from 12Z September 2, 2022, through 12Z September 9, 2022. The forecast created at 22Z would be valid from 00Z September 3, 2022 through 00Z September 10, 2022.


NOAA/ National Weather Service
National Centers for Environmental Prediction
Weather Prediction Center
5830 University Research Court
College Park, Maryland 20740
Weather Prediction Center Web Team
Disclaimer
Credits
Glossary
Privacy Policy
About Us
Career Opportunities
Page last modified: Thursday, 18-Jan-2024 19:54:02 UTC