On 29 Jul 2013, the pentad files: godas.P.20130704.grb godas.P.20130709.grb were replaced with those generated from the GODAS run on WCOSS, NCEP's new HPC. Also, the grads index files will no longer be provided. To generate your own, modify the TDEF statement in the sample descriptor files as needed for your period of interest. Try the -0 (that's zero) option when you call gribmap. Questions or comments? Contact Diane.Stokes@noaa.gov or David.Behringer@noaa.gov