GribStream Blog
HRRR model now available
GribStream added NOAA's HRRR with 3 km resolution, hourly updates, and history back to 2014.
On January 21, 2025, we added NOAA HRRR (High-Resolution Rapid Refresh) to GribStream.
About HRRR
HRRR is NOAA's convection-allowing short-range model for CONUS. It runs hourly on a 3 km grid, with 00/06/12/18 UTC cycles extending to 48 hours and intermediate cycles to 18 hours. The archive goes back to 2014, making it valuable for both operations and research.
Why it matters
HRRR captures mesoscale and boundary-layer processes that are often missed by coarser models. It is widely used for severe convection nowcasting, aviation ceiling/visibility, wind ramps for renewables, and rapid-response planning.
Using HRRR on GribStream
- Pull long historical runs without downloading GRIB files.
- Compare successive cycles to measure forecast stability.
- Combine filters and expressions to detect high-impact events.