HRRR: High Resolution Rapid Refresh#
Dowell, D. C., and Coauthors, 2022: The High-Resolution Rapid Refresh (HRRR): An Hourly Updating Convection-Allowing Forecast Model. Part I: Motivation and System Description. Wea. Forecasting, 37, 1371–1395, https://doi.org/10.1175/WAF-D-21-0151.1.
James, E. P., and Coauthors, 2022: The High-Resolution Rapid Refresh (HRRR): An Hourly Updating Convection-Allowing Forecast Model. Part II: Forecast Performance. Wea. Forecasting, 37, 1397–1417, https://doi.org/10.1175/WAF-D-21-0130.1.
James, E. P., and S. G. Benjamin, 2017: Observation system experiments with the hourly updating Rapid Refresh model using GSI hybrid ensemble-variational data assimilation. Mon. Wea. Rev., 145, 2897–2918, https://doi.org/10.1175/MWR-D-16-0398.1.
Data Sources#
prioriy= |
Data source | Archive Duration |
|---|---|---|
"aws" |
Amazon Web Services | 2014-07-30 to present |
"nomads" |
NOMADS | Yesterday and today |
"google" |
Google Cloud Platform | 2014-07-30 to present |
"azure" |
Microsoft Azure | 2021-03-21 to present |
"pando" |
University of Utah Pando archive | varies |
Model Initialization#
Model cycles every hour.
Forecast Hour#
For the most recent version of HRRR…
fxx= |
Forecast lead time |
|---|---|
0 through 48, step=1 |
available for runs initialized at 00z, 06z, 12z, 18z |
0 through 18, step=1 |
available for runs initialized at all other hours. |
Products#
product= |
Product Description |
|---|---|
"sfc" |
surface fields |
"prs" |
pressure levels |
"nat" |
native levels |
"subh" |
subhourly products |
Update History#
| Version | Start |
|---|---|
| HRRRv1 | 2014-09-30 |
| HRRRv2 | 2016-08-23 |
| HRRRv3 | 2018-07-12 |
| HRRRv4 | 2020-12-02 |
| RRFS | 2026 |