g2subset (grib2 subset) allows you to subset (time, field, level, or region) a GRIB2 file and
sends you the result
Subdirectory
|    nam.20251204 |
|    nam.20251203 |
|    nam.20251202 |
|    nam.20251201 |
|    nam.20251130 |
|    nam.20251129 |
|    nam.20251128 |
|    nam.20251127 |
NCEP NOMADS Version 1.2