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FOUS61 KWNO 120000

OUTPUT FROM ETA 00Z OCT 12 98
TTPTTR1R2R3 VVVLI PSDDFF HHT1T3T5
IPT//772522 00008 220114 60140704
06000882430 00609 230114 58100705
12000952629 -1209 240310 55090704
18000752737 -0705 231202 56140704
24000803043 -1303 211505 55140704
30000963337 00204 201712 55110604
36002993950 00004 171715 55110604
42000845342 01100 151715 55150800
48006927147 05500 121616 54130801

TT Forecast hour. 06 would be 6 hrs away from 00z (12z) or 2am (pm) EDT.  IPT in the second line is the station identifier for Williamsport, PA.
PTT Liquid precipitation during the preceding 6 hrs (in hundreths)
R1 Mean RH in the layer btwn the surface and ~1640'
R2 Mean RH in the layer btwn 1640' and ~18000'
R3 Mean RH in the layer btwn ~18000' and ~30000'
VVV Vertical velocity at 700 mb (~10K'). -20 = sinking motion at 2.0 microbars/sec = 2.0 cm/sec
Sinking motion btwn -15 and -25 is best for soaring.
LI Lifted Index. Positive (negative) values indicate stability (instability). Has little application
to soaring. Values below -3 suggest good potential for thunderstorms.
PS Sea-level pressure 22 = 1022 millibars
DDFF DD = wind direction FF = wind speed in knots at ~1640'
HH Thickness of the layer btwn the surface and ~18000' in decameters. 60 = 5600 meters...54 = 5540 meters. 40 or below is a fair indicator that the atmosphere is cold enough for snow.
T1 Temperature at ~1500' (0.5 km) in Celsius
T3 Temperature at ~3281' (1 km) in Celsius
T5 Temperature at ~6562' (2 km) in Celsius

48006927147 05500 121616 54130801

This segment would decode as:
48 48hr forecast from the initial time of 00/13th...8 pm Wednesday
006 .06 inches liquid precipitation fell between 5 and 8 pm Wednesday
92 92% RH @ ~1640'
71 71% RH between ~1640' and ~18K'
47 47% RH between ~18K' and ~30K'
055 Upward vertical motion of 5.5 cm/sec
00 Lifted index of 0
12 Sea level pressure 1012 mb
16 SSE Wind (160 degrees)
16 16 knots
54 5540 meters between the surface and ~18K'
13 13C @ 1640' (0.5 km)
08 08C @ 3281' (1km)
01 01C @ 6562' (2 km)