data api · USA
NOAA High-Resolution Rapid Refresh (HRRR) Model
The HRRR is a NOAA real-time 3-km resolution, hourly updated, cloud-resolving, convection-allowing atmospheric model, initialized by 3km grids with 3km radar assimilation. Radar data is assimilated in the HRRR every 15 min over a 1-h period adding further detail to that provided by the hourly data assimilation from the 13km radar-enhanced Rapid Refresh. <br /> <br /> The HRRR ZARR formatted data was originally generated by the University of Utah under a grant provided by NOAA. They are are conti
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What's in it
- Data offered docs-verified
- HRRR atmospheric model output (3 km, hourly updated) · HRRR Zarr near-real-time archive · HRRR archive since 2014
- Coverage llm-inferred
- USA · Since 2014
- Resolution docs-verified
- 3 km spatial; hourly model updates
- Update frequency docs-verified
- Hourly
- Formats docs-verified
- GRIB2 · Zarr · S3 bucket objects
- Access docs-verified
- Free and open to the public, no AWS account required (AWS CLI --no-sign-request); NOAA open data licence, attribution requested for unaltered data, no endorsement implied
Useful for
- Use cases llm-inferred
- Historical convective rainfall and storm-event reconstruction for flood risk assessment (archive since 2014) · Near-term weather context for site works and construction programme planning · Atmospheric model inputs for climate or weather sensitivity studies on non-UK projects
- Audience llm-inferred
- flood consultants · hydrologists · GIS analysts · environmental consultants · climate data analysts
Limitations
- Constraints llm-inferred
- Covers the USA domain only; not UK data · Model output, not observed rainfall or river level · Zarr archive is maintained by University of Utah, not NOAA; data queries go to atmos-mesowest@lists.utah.edu · Attribution required for unaltered NOAA data; modified data must not be presented as original · Large archive; access requires familiarity with AWS S3 and GRIB2/Zarr tooling
- Licence
- NOAA data disseminated through NODD are open to the public and can be used as desired.<br/> <br/>NOAA makes data openly available to ensure maximum use of our data, and to spur and encourage explorati
- Authentication
- Unknown — review source docs
- GitHub stars
- Unknown
- Last commit
- Unknown
- Last successful page check
- 16/10/2026
- Page health
- page reachable
- Package
- Not recorded
- Verification
- Not independently verified
Provenance & evidence
Listed in aws-odr public catalogue API on 2026-10-16; relevance/value screened (haiku).
Metadata observed 14/10/2026 · research sweep: sweep-2026-10-16 (aws-odr)