FHOUR

     FHOUR is the forecast hour, e.g., 18, or 24, which defines 
     the "f" value in the BUFRFIL name, as follows:

	FHOUR  		f
	-----	       ---
	0		A
	6		B
	12		C
	18		D
	24		E
	30		F
	36		G
	42		H
	48		I
	60		J
	72		K

     It also defines the forecast hour for the ASCII intermediate 
     input/output file, UKAFIL.