g2subset (grib2 subset) allows you to subset (time, field, level, or region) a GRIB2 file and
sends you the result
Subdirectory
|    akrtma.20260403 |
|    akrtma.20260402 |
|    akrtma.20260401 |
|    akrtma.20260331 |
|    akrtma.20260330 |
|    akrtma.20260329 |
|    akrtma.20260328 |
|    akrtma.20260327 |
|    akrtma.20260326 |
|    akrtma.20260325 |
NCEP NOMADS Version 1.2