WRF Downloads

You may download WRF modeling system source codes (including WRF model, WPS (WRF Preprocessing System), graphics software, terrestrial datasets for WPS, and test data for WRF model from this site.

WRF modeling system software Version 3.4.1 (August 16, 2012)

Release date: August 16, 2012 - WRF model (detail).
Release date: August 16, 2012 - WRFDA (detail)
Release date: August 16, 2012 - WPS (detail)

WRF modeling system software Version 3.4 (April 6, 2012)

Release date: April 6, 2012 - WRF model (detail).
Release date: April 6, 2012 - WRFDA (detail)
Release date: April 6, 2012 - WPS (detail)

WRF modeling system software Version 3.3.1 (Sept 22, 2011)

Release date: Sept 22, 2011 - WRF model (detail).
Release date: Sept 22, 2011 - WPS (detail)
Release date: Sept 27, 2011 - WRFDA (detail)

WRF modeling system software Version 3.3 (April 6, 2011)

Release date: April 6, 2011 - WRF model (detail).
Release date: April 6, 2011 - WRFDA (detail)
Release date: April 6, 2011 - WPS (detail)

WRF modeling system software Version 3.2.1 (August 18, 2010)

Release date: August 18, 2010 - WRF model (detail).
Release date: August 18, 2010 - WRFDA (detail)

WRF modeling system software Version 3.2 (April 2, 2010)

Release date: April 2, 2010 - WRF model (detail).
Release date: April 2, 2010 - WRFDA (detail)

WRF modeling system software Version 3.1.1 (July 31, 2009)

Release date: July 31, 2009 - WRF model (detail).
Release date: July 31, 2009 - WRFDA (detail)

WRF modeling system software Version 3.1 (April 9, 2009)

Release date: April 9, 2009 - WRF model (detail).
Release date: April 9, 2009 - WRFDA (detail)

WRF modeling system software Version 3.0.1.1 (August 22, 2008)

Release date: August 22, 2008 - This includes WRF model (detail)

WRF modeling system software Version 2.2 (Dec 22, 2006)

Release date: December 22, 2006 - This includes WRF model (detail), and WPS (detail). WRF-DA (3DVAR) (detail).

For users who do not switch to the new WPS, SI has no change for this release.

External packages you may need to run WRF and graphics programs:

- netCDF for WPS and WRF model: http://www.unidata.ucar.edu/
- NCAR Graphics for NCL and RIP4: http://ngwww.ucar.edu/

Free input data for initializing WRF at NCAR:

NCAR's Scientific Computing Division's Data Support Section (DSS) is providing a number of datasets archived at NCAR for the latest year free and they can be otained online.

Free input data for initializing WRF at NOAA:

The NOAA National Operational Model Archive and Distribution System (NOMADS) provides near real-time and historical operational model data via web portal.

Real-time data from NCEP's ftp site:

NCEP provides a variety of regional (NAM) and global (GFS) data in GRIB format, and they can be used to initialize WRF in real-time. As of Feb 4 2008, all GFS and NAM data are in grib 2.

For NAM data, a popular dataset is the 40 km one, which has the following file names: nam.t{00,06,12,18}z.awip3dff.tm00.grib2, where ff stands for forecast hours. Forecast hours from 0 to 84 are available 4 times daily at 3 hourly interval.

For GFS data, a typical dataset is the 1 degree one, which has the following file names: gfs.t{00,06,12,18}.pgrbfhh.grib2 (where hh stands for forecast hour). Forecast hours from 0 to 384 are availably 4 times daily at 6 hour interval. For 0.5 degree data, try gfs.t{00,06,12,18}z.pgrb2fhh.