FOUS64-STYLE OUTPUT - SKY STRATEGIES
Not an official National Weather Service product.

RRFS.txt               latest RRFS cycle (00/06/12/18Z, to 84 hours)
RRFS_YYYYMMDDHH.txt    recent cycles

Built from NOAA RRFS 3 km output in the FRH bulletin format of the old NAM FOUS64.
Layer definitions approximate the original.

TT    forecast hour (first row = initial time)
PTT   6-hr QPF, hundredths of an inch
R1    mean RH, lowest ~50 mb (incl. 2 m)
R2    mean RH, top of R1 layer to 500 mb
R3    mean RH, 500-250 mb
VVV   700 mb vertical velocity, tenths of microbars/s, positive = rising
      (averaged over ~15 km to filter 3 km grid noise)
LI    best lifted index, negative coded 100+LI (96 = -4)
PS    sea-level pressure, last two digits (mb)
DDFF  boundary-layer wind, tens of degrees / knots
HH    1000-500 mb thickness, dm, leading 5 dropped (40 = 540)
T1    mean temp lowest ~50 mb; T3 ~900 mb; T5 ~800 mb
      (deg C, negative coded 100+T, 97 = -3)