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United States Stage IV Quantitative Precipitation Archive

Metadata Updated: June 15, 2024

This dataset offers hourly estimates of radar indicated rain gage corrected precipitation at a roughly 4km spatial resolution. Mosaicked into a national product at NCEP, from the regional hourly multi-sensor (radar+gauges) precipitation analyses produced by the 12 River Forecast Centers over CONUS. Some manual QC done at the RFCs. The Stage II/IV job is run at 33min past the top of each hour. Hourly Stage IV is re-made hourly (if there is new input after valid time for the next 23 hours, then again at 1/3/5/7 days after valid time. These data have been aggregated into this service by the USGS and are downloaded and incorporated into the archive every 30 minutes. The original Hydrologic Rainfall Analysis Projection grid cell locations redefined by unprojecting grid cell locations using spherical earth projection algorithms. The cell lat/lon locations should be interpreted as being on a modern geodetic datum. This transformation is needed because the original grid cell location's lat/lon values were on a geodetic datum but were assumed to be on a spherical datum. See: for more information. Note that this publication references the National Precipitation Verification Unit. The data represented here are aggregated from the same source as the National Precipitation Verification Unit used prior to being shut down. National Centers for Environmental Prediction National Stage IV Quantitative Precipitation Estimate Product: NWS Advanced Hydrologic Prediction Service About Page: USGS Publication Documenting Grid Reprojection: Raw Data Access here:

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources


Metadata Created Date June 1, 2023
Metadata Updated Date June 15, 2024

Metadata Source

Harvested from DOI EDI

Additional Metadata

Resource Type Dataset
Metadata Created Date June 1, 2023
Metadata Updated Date June 15, 2024
Publisher Climate Adaptation Science Centers
Identifier 56d9862ae4b015c306f7c486
Data Last Modified 2016-03-04
Category geospatial
Public Access Level public
Bureau Code 010:00
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Harvest Object Id bc091727-1bab-4c10-b3a5-a8b5884acf95
Harvest Source Id 52bfcc16-6e15-478f-809a-b1bc76f1aeda
Harvest Source Title DOI EDI
Metadata Type geospatial
Old Spatial -134.043029785,19.8036804199,-59.9513664246,57.8475799561
Source Datajson Identifier True
Source Hash 3f671d128a98301ef0e2295c01a3da88afe5954168838423339e7983d9b16118
Source Schema Version 1.1
Spatial {"type": "Polygon", "coordinates": -134.043029785, 19.8036804199, -134.043029785, 57.8475799561, -59.9513664246, 57.8475799561, -59.9513664246, 19.8036804199, -134.043029785, 19.8036804199}

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