This archive contains answers to questions sent to Unidata support through mid-2025. Note that the archive is no longer being updated. We provide the archive for reference; many of the answers presented here remain technically correct, even if somewhat outdated. For the most up-to-date information on the use of NSF Unidata software and data services, please consult the Software Documentation first.
> I'm in the process of pulling together a Unidata equipment proposal. A > part of the proposal deals with serving up and using mesonet data and > surface analyses. I just wanted to double check whether the NCEP RTMA > grids are being distributed over the CONDUIT feed. We're ftp'ing them > directly from NCEP, so wanted to see if they're being delivered a bit > more broadly. > > Thanks > > John > > John, The RTMA grids are not part of the CONDUIT feed, but are being sent over NOAAPORT (http://www.nws.noaa.gov/dm-cgi-bin/chgshow.pl?fn=DM07-06.09.txt), so are part of the NGRID feed which is being distributed widely as part of the IDD. The decoder action I supply for GEMPAK is: # RTMA (real-time mesoscale analysis) Grid 227 CONUS 5km NGRID ^[LM].M... KWBR PIPE decoders/dcgrib2 -m 200 -d data/gempak/logs/dcgrib2_rtma.log -e GEMTBL=@GEMTBL@ data/gempak/model/rtma/YYYYMMDDHH_rtma.gem The fields currently being sent are: 1 070228/2100F000 10 HGHT DRCTAERR 2 070228/2100F000 10 HGHT SPEDAERR 3 070228/2100F000 10 HGHT VREL 4 070228/2100F000 10 HGHT UREL 5 070228/2100F000 10 HGHT DRCT 6 070228/2100F000 10 HGHT SPED 7 070228/2100F000 2 HGHT TMPK 8 070228/2100F000 2 HGHT TMPKAERR 9 070228/2100F000 2 HGHT DWPKAERR 10 070228/2100F000 2 HGHT DWPK Steve Chiswell Unidata User Support Ticket Details =================== Ticket ID: OLI-439068 Department: Support CONDUIT Priority: Normal Status: Closed