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Service Description: The 13 Weather Service (NWS) River Forecast Centers (RFC) produce Quantitative Precipitation Estimates (QPE) for their individual RFC areas. The RFCs produce the data using a multi-sensor approach utilizing NWS 88D radar estimates of precipitation, automated and manual precipitation gauges and satellite estimates of precipitation. These QPEs are used as input into their hydrologic models to produce NWS river forecasts and guidance products. The QPEs from each RFC are combined into a single mosaic to create a QPE product that covers the lower 48 states, Alaska and Puerto Rico. These QPE 's measuring units are in inches. The data are on an approximate 4km x 4km grid cell scale.
The individual hourly data products (labeled Since 12Z Observed and those labeled Last X hours) contain data for the labeled time frame. These products are updated every hour to incorporate the most recent data.
The individual daily data products (Today's Analysis Observed, those labeled Last X Days Observed, and those labeled X To Date Observed.) represent a 24 hour total ending at 12UTC on the indicated date. These 24-hour data are then summed together to produce multi-day precipitation totals. Normal precipitation data are also produced for the Today's Analysis Observed and multi-day summations of 7 days or greater using data from the PRISM Climate Group. Percent of normal and departure from normal comparisons are also available by comparing the QPE data with the PRISM normal data. The daily data may be updated several times between 12UTC and 21UTC each day as updated data becomes available.
Link to graphical web page: https://water.weather.gov/precip/index.php
Link to data download (Advanced Hydrologic Predictive Services (AHPS) Precipitation Downloads): https://water.weather.gov/precip/download.php
Links to metadata:
Observed
Normal
Departure from Normal
Percent of Normal Precipitation
Questions/Concerns about the service, please contact the DISS GIS team
Time Information:
This service is not time enabled
Map Name: River Forecast Centers Quantative Precipitation Estimates (QPE)
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Description: The 13 National Weather Service (NWS) River Forecast Centers (RFC) produce Quantitative Precipitation Estimates (QPE) for their individual RFC areas. These QPEs are used as input into their hydrologic models to produce NWS river forecasts and guidance products. The QPEs from each RFC are combined into a single mosaic to create a QPE product that covers the lower 48 states, Alaska and Puerto Rico. These QPE 's measuring units are in inches. The individual daily data products represent a 24 hour total ending at 12UTC on the indicated date. These 24-hour data are then summed together to produce multi-day precipitation totals. Normal precipitation data are also produced for the same daily and multi-day summations using data from the PRISM Climate Group. Percent of normal and departure from normal comparisons are also available by comparing the QPE data with the PRISM normal data. The data are on an approximate 4km x 4km grid cell scale. The RFCs produce the data using a multi-sensor approach utilizing NWS 88D radar estimates of precipitation, automated and manual precipitation gauges and satellite estimates of precipitation. The daily data are updated several times between 12UTC and 21UTC each day and may be adjusted several times as more data becomes available.
Copyright Text: National Oceanic and Atmospheric Administration (NOAA), National Weather Service (NWS), Office of Dissemination (ODIS)
Spatial Reference:
102100
(3857)
Single Fused Map Cache: false
Initial Extent:
XMin: -2.5999225332147084E7
YMin: -4933543.592357749
XMax: 1.1360016053002365E7
YMax: 2.65519360452682E7
Spatial Reference: 102100
(3857)
Full Extent:
XMin: -1.9822739074728154E7
YMin: 1539038.3097387515
XMax: -6668714.0747
YMax: 1.32552800849E7
Spatial Reference: 102100
(3857)
Units: esriMeters
Supported Image Format Types: PNG32,PNG24,PNG,JPG,DIB,TIFF,EMF,PS,PDF,GIF,SVG,SVGZ,BMP
Document Info:
Title: Quantitative Precipitation Estimates (QPE)
Author: NWS RFC
Comments: The 13 National Weather Service (NWS) River Forecast Centers (RFC) produce Quantitative Precipitation Estimates (QPE) for their individual RFC areas. These QPEs are used as input into their hydrologic models to produce NWS river forecasts and guidance products. The QPEs from each RFC are combined into a single mosaic to create a QPE product that covers the lower 48 states, Alaska and Puerto Rico. The individual daily data products represent a 24 hour total ending at 12UTC on the indicated date. These 24-hour data are then summed together to produce multi-day precipitation totals. Normal precipitation data are also produced for the same daily and multi-day summations using data from the PRISM Climate Group. Percent of normal and departure from normal comparisons are also available by comparing the QPE data with the PRISM normal data. The data are on an approximate 4km x 4km grid cell scale. The RFCs produce the data using a multi-sensor approach utilizing NWS 88D radar estimates of precipitation, automated and manual precipitation gauges and satellite estimates of precipitation. The daily data are updated several times between 12UTC and 21UTC each day and may be adjusted several times as more data becomes available.
Subject: The individual data products represent a 24 hour total ending at 12 UTC on the indicated date.
Category:
Keywords: National Weather Service,River Forecast Center,Quantitative Precipitation Estimates,NWS,RFC,QPF,AHPS
AntialiasingMode: None
TextAntialiasingMode: Force
Supports Dynamic Layers: true
Resampling: false
MaxRecordCount: 1000
MaxImageHeight: 4096
MaxImageWidth: 4096
Supported Query Formats: JSON, geoJSON
Supports Query Data Elements:
Min Scale: 0
Max Scale: 0
Supports Datum Transformation: true
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