NOAA GFS (NOAA_GFS)

Upstream: NOMADS GFS 0.25° Grib Filter (filter_gfs_0p25.pl). Same pattern as HRRR: cycle, forecast hours, bbox, variables.

Transport: HTTP GET via coldcast.download.download_requests().

Auth: None for public NOMADS.

CLI: coldcast download noaa_gfs

Settings: NOAA_GFS — NOMADS bbox and templates as for NOAA HRRR (NOAA_HRRR) (native leftlon … fields; root bounding_box is not mapped to NOMADS).

Code: coldcast.sources.gfs