Jennifer, Daryl, Unidata, and all others involved,
I would just like to say a big Thank You for all your work to continue to
support the GEMPAK community as much as possible. As you all know there
are still many of us who use and depend on this diverse set of tools, and
your efforts are very much appreciated.
Thank You for all that you do!
Meteorology Support Analyst
College of DuPage - Nexlab
On Tue, Jan 4, 2022 at 5:32 PM Jennifer Oxelson Ganter <oxelson@xxxxxxxx>
> Greetings GEMPAK Community.
> In March of 2021, the Unidata Program Center made the community aware that
> it no longer had software development resources available to support the
> continued use and evolution of GEMPAK. Following discussions with community
> members, Unidata published A Proposal for Community Support of GEMPAK (
> laying out some history of the package and the support situation, and
> proposing a way forward.
> At that time, long-time GEMPAK user Daryl Herzmann of Iowa State
> University offered to take the lead in coordinating community-based efforts
> to continue making GEMPAK available. In the intervening months, Herzmann
> and other community members have worked to identify ways to synthesize
> Unidata's existing GEMPAK codebase with updated code from the National
> Weather Service (NWS). Although the NWS remains committed to moving all
> operational forecasting activities to use the Advanced Weather Interactive
> Processing System (AWIPS), developers at the National Centers for
> Environmental Prediction (NCEP) continue to make changes to the NAWIPS
> package, as GEMPAK is known in the NWS.
> Recently, Herzmann made GEMPAK version 7.14.0 available, bringing the
> package in line with the latest updates to NAWIPS. That version is
> available from the GEMPAK repository on Github (
> To summarize the current situation:
> - GEMPAK is no longer being actively maintained or supported by the
> Unidata Program Center.
> - GEMPAK distributions created and maintained by community members are
> available from the GEMPAK Github repository (
> https://github.com/Unidata/gempak), hosted by Unidata.
> - Unidata will continue to host and maintain the gembud mailing list
> as a service to community users of GEMPAK:
> - list archives:
> - subscribe: gembud-join@xxxxxxxxxxxxxxxx
> - GEMPAK downloads can be accessed at:
> - Community members who wish to contribute development or other
> efforts to the GEMPAK project should visit
> GEMPAK Downloads from Unidata Discontinued
> Unidata has been hosting downloads of compiled GEMPAK binaries for version
> 7.5.1 — released in February 2019. This was the last version we had
> development resources available to create. While using the most recent
> version (7.14.0) does require the user to build the package from source
> code, Unidata now feels that the binary version we have available is too
> old to continue distributing. GEMPAK version 7.5.1 binaries have been
> removed from Unidata's download server.
> Note that version 7.5.1 documentation continues to be available on
> Unidata's documentation server: GEMPAK Documentation (
> https://docs.unidata.ucar.edu/gempak/). While Unidata has no plans to
> update this documentation set, it remains useful.
> NOTE: All exchanges posted to Unidata maintained email lists are
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