ALERT: No maps available for GFS run 06 UTC Tue 18 Dec 2018. Defaulting to 06 UTC Fri 24 May 2024.
ALERT: Maps for forecast hour 252 do not exist, defaulting to fhour = 30.
Valid: 12 UTC Sat 25 May 2024
ERROR: Parameter RH unavailable for GFS forecast hour 30.