Companion fork of frfa/XyGrib for the GFS/WW3 NOAA NOMADS downloader script (https://github.com/DrCalambre/GFS_NOAA_NOMADS_Downloader_for_XyGrib-72h_GRIB2_Forecast). Adds support for NOAA WW3 swell partitions (surfaceType1=241), which XyGrib currently discards — so swell height, period and direction from NOMADS GRIB2 files display correctly.
weather downloader noaa meteorology grib bash-script sailboat sailing gfs grib2 meteorological-data opencpn marine-data nomads antix ww3 wavewatch3 xygrib noaa-nomads fixswell-241
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Updated
Oct 21, 2026 - C++