Software Release: Release of the Community Standalone GFDL Vortex Tracker Code Version 3.9a

The DTC’s HWRF team is pleased to announce the public release of the Community standalone GFDL Vortex Tracker code version 3.9a. The standalone tracker can be used to determine properties (location, intensity, structure etc) of forecast tropical cyclones of any numerical model, as long as selected variables are provided in GRIB or NetCDF format in a lat/lon grid. This version is in line with the 2017 operational implementation of HWRF. This code also has also been upgraded for cyclone genesis tracking.

Code downloads, test datasets, and a users' guide can be obtained from Please refer to Known Issues and Fixes if you encounter any issues.

Questions and comments can be directed to

Contributed by Mrinal Biswas