HRRR Home Info Page
Current and Forecast Graphics
HRRR Configuration Info
CONUS-HRRR domain parms
HRRR static fields inc lat/lon (NetCDF-952 MB)
WFIP-HRRR domain
CONUS-HRRR terrain info
HRRR WPS Namelist
HRRR WRF Namelist
HRRR GRIB2 Table 2-D Hourly
HRRR GRIB2 Table 2-D 15 min
HRRR GRIB2 Table Native
HRRR GRIB2 Table Press
HRRR-TLE GRIB2 Table
HRRR-NCEP GRIB2 Table 2-D Hourly
HRRR-NCEP GRIB2 Table 2-D 15 min
HRRR-NCEP GRIB2 Table Native
HRRR-NCEP GRIB2 Table Press
HRRR/RAP diagnosis of output fields
Rapid Refresh web page
RUC GRIB viewer
HRRR FAQ FAQ page
HRRR/RAP forum
HRRR Status
HRRR Status
HRRR Status (Past 24 hrs) HRRR Dev1 Status
HRRR Dev1 Status (Past 24 hrs)
HRRR Dev2 Status
HRRR Dev2 Status (Past 24 hrs)
RAP-ESRL (HRRR Parent)
RAP Dev1 (HRRR Dev1 Parent)
HRRR Convective Probabilities
HCPF
Soundings
Interactive (Java)
(beta--restricted)
Verification
Composite Reflectivity
Composite Reflectivity Status
24 Hour Precipitation
24 Hour Precipitation Status
Surface - HRRR/RAP
Other Products
NCEP Model Products (GFS,etc.)
Organization
EMB/GSD Staff
EMB Org Chart
ESRL/GSD
Description
HRRRv2-ESRL Changes Apr 2015
HRRR-ESRL Changes Apr 2014
HRRR Home Page
HRRR-Smoke info
NWS Discs Using HRRR
RUC/RR/FIM Pubs
HRRR ChangeLog
HRRRdev ChangeLog
RUA ChangeLog
HRRR-TLE ChangeLog
HRRR-Alaska ChangeLog HRRR-Hawaii ChangeLog
Other Information
NCEP ftp access to HRRR data
NCEP product status
NCEP obs processing
NWS-TOC status
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The High-Resolution Rapid Refresh (HRRR)


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Composite Reflectivity

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 .

HRRR Colorado Labs Award video - a 2-minute layperson-level description on the HRRR and why it is important.

An experimental version of the HRRR model is run in real-time at NOAA/ESRL (currently HRRRv2 , to become HRRRv3 in fall 2016 ).
The operational version of the HRRR (currently HRRRv2 (info here) ) was implemented at NCEP 23 Aug 2016. NOAA/NWS Technical Information Notice (TIN) on RAPv3/HRRRv2 changes

The experimental HRRR is run by NOAA/ESRL/GSD as a real-time demonstration of advanced versions of the HRRR, ahead of the NCEP operational version. Experimental versions of the HRRR started to run in 2010 and from October 2014 onward, continuing to run more advanced versions than the NCEP operational version but with slightly lower reliability. Usually yearly upgrades are made at ESRL.

  • HRRRv3 - implemented at ESRL starting in late Sept 2016
  • HRRRv2 - implemented at ESRL in Jan-April 2015 summary and more details.
HRRRv2 physics description in Benjamin et al. 2016, A North American Hourly Assimilation and Model Forecast Cycle: The Rapid Refresh. Mon. Wea. Rev., 144, 1669-1694.

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