g2subset (grib2 subset) allows you to subset (time, field, level, or region) a GRIB2 file and
sends you the result
Subdirectory
|    gfs.20260102 |
|    gfs.20260101 |
|    gfs.20251231 |
|    gfs.20251230 |
|    gfs.20251229 |
|    gfs.20251228 |
|    gfs.20251227 |
|    gfs.20251226 |
|    gfs.20251225 |
|    gfs.20251224 |
NCEP NOMADS Version 1.2