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Hi, re: > Thank you, Tom, for the helpful information! No worries. re: > I'll let you know what we learn. OK, thanks. FYI: I created a compressed tarball that contains both the original and modified versions of GEMPAK 7.5.1 source files that need to be modified for Y2K21 fixes. The procedure for using the tarball is: <as 'gempak'> -- copy the tarball to the ~gempak/NAWIPS directory cd ~gempak/NAWIPS tar xvzf gempak_y2k21.tar.gz make make install I used this tarball to update the GEMPAK 7.5.1 instance that the AMS is using for their Datastreme project last night, and, as far as I can tell, their GEMPAK decoding, analyses and displays are once again working correctly. I can make the tarball available to you (and others) if you like. Before doing this, I want to add code modifications for display of NEXRAD Level 2 radar data that were provided by Steve Chiswell. Cheers, Tom -- **************************************************************************** Unidata User Support UCAR Unidata Program (303) 497-8642 P.O. Box 3000 address@hidden Boulder, CO 80307 ---------------------------------------------------------------------------- Unidata HomePage http://www.unidata.ucar.edu **************************************************************************** Ticket Details =================== Ticket ID: UQM-782686 Department: Support GEMPAK Priority: Normal Status: Closed =================== NOTE: All email exchanges with Unidata User Support are recorded in the Unidata inquiry tracking system and then made publicly available through the web. If you do not want to have your interactions made available in this way, you must let us know in each email you send to us.