NWS River Forecast Centers use the best available forecasts for future precipitation amounts given the constraints
of current hydrometeorological science. The number of hours or days into the future that precipitation can be
realistically forecast varies across the United States with seasons and geographic area. For example,
forecast rainfall amounts for hurricanes and large scale weather systems can extend farther into the future
than they can for local summer thunderstorms.
Click on the map or links below to access the Quantitative Precipitation Forecast (QPF)
web pages for the 13 NWS RFCs