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Greetings! Well, the files are arranged hourly, so "latest" points to the most recent hourly file. I'm guessing from looking at some of the files that only the 6-hourly runs (0, 6, 12, 18) have the full set of output. The 3-hourly (e.g. 15z) seem to have more output than the other hours (e.g. 20z) as well. If you want the full set of possible data, I would look at the full collection link: https://thredds.ucar.edu/thredds/catalog/grib/NCEP/NBM/CONUS/catalog.html?dataset=grib/NCEP/NBM/CONUS/TwoD or if you only want the output with the shortest distance from forecast to valid time, look at Best: https://thredds.ucar.edu/thredds/catalog/grib/NCEP/NBM/CONUS/catalog.html?dataset=grib/NCEP/NBM/CONUS/Best Cheers! Ryan > Okay thanks! When looking at the data under the latest collection I don't see > the full collection of the NBM data. Is that because the file would be too > large to download? > > Thanks, > Jesse > Ticket Details =================== Ticket ID: KAL-154307 Department: Support THREDDS 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.