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Teresa, The lines you show look like pieces from the GEMPAK www pages. The www page I have at: http://www.unidata.ucar.edu/packages/gempak/tutorial/pqact/decoders.tbl Shows: # AVN model output # Grid #201 N. Hemisphere 381km: ^Y.A... KWBC.*(/mAVN|/mSSIAVN) # Grid #202 CONUS 190km: ^Y.I... KWBC.*(/mAVN|/mSSIAVN) # Grid #203 Alaska 190km: ^Y.J... KWBC.*(/mAVN|/mSSIAVN) # Grid #211 CONUS 80km: ^Y.Q... KWBC.*(/mAVN|/mSSIAVN) # Grid #213 CONUS 95km: ^Y.H... KWBC.*(/mAVN|/mSSIAVN) # Select any/all grids desired from [QAIJH] HRS ^[YZ].[QAIJH]... KWB. ([0-3][0-9])([0-2][0-9]).*(/mAVN|/mSSIAVN) The other Global 1.25x1.25 degree AVN (thinned grids) are: # Global AVN (Spectral) Thinned grids # Grid octets I-P will be stitched togethir as a single global grid # HRS ^H.[I-P]... KWB. ([0-3][0-9])([0-2][0-9]).* From the above, if you wanted a data set that covers N. America, your choices would be either Grid #201 or the global thinned grids. A pattern for grid #201 is: HRS ^[YZ].[A]... KWB. ([0-3][0-9])([0-2][0-9]).*(/mAVN|/mSSIAVN) The "A" in the third character position identifies grid #201. All of the above are GRIB data sets, so if you are already processing either of the above to NetCDF (typically with gribtonc from the ftp://ftp.unidata.ucar.edu/pub/decoders/decoders.tar.Z distribution), then you would have the data set you need. Steve Chiswell Unidata User Support >From: Teresa Van Hove <address@hidden> >Organization: GST >Keywords: 200011102110.eAALAcD13996 > >Hi, > >I need to start getting AVN model data for Continental U.S. + Alaska or N. >America. >I did a quick search on AVN in your support archives and got: > ># Grid #202 CONUS 190km: ^Y.I... KWBC.*(/mAVN|/mSSIAVN) ># Grid #203 Alaska 190km: ^Y.J... KWBC.*(/mAVN|/mSSIAVN) ># Grid #201 N. Hemisphere 381km: ^Y.A... KWBC.*(/mAVN|/mSSIAVN) >#NMC2 avn/avn.(......)/gblav.T(..)Z > >I still don't know how to put this together to get what I want. >Also who should I use as the source? >Would I use just >NMC2 ^Y.I... KWBC.*(/mAVN|/mSSIAVN) >FILE data/ > >Doug Hunt in my group has some decoding stuff to go to netcdf >from the grib files - or do I already have a decoder in my >ldm area? > >Thanks, >Teresa >