INTERPRETATION OF NGM DIRECT MODEL OUTPUT GUIDANCE ACCESSED AT U OF U

 NGM output for station SLC at model initial time 97050912:

 TT  PTT  R1 R2 R3  VVV  LI  PS  DDFF  HH  T1 T3 T5
 00       27 20 45  009  04  20  1506  63  12 07 01
 06    0  19 27 27  -08  02  19  1203  65  16 09 00
 12    0  12 39 22  -16  00  16  1605  69  20 12 02
 18    0  15 47 22  005  99  17  2111  68  19 12 01
 24    0  19 46 20  000  98  17  2307  67  18 11 01
 30    0  18 50 19  003  98  15  2106  68  19 11 01
 36    0  19 46 21  -03  98  11  2306  71  21 13 02
 42    0  24 70 38  -10  98  13  3611  69  18 11 01
 48    0  29 66 39  003  98  11  0803  67  16 11 01

 TT = Forecast hour
 PTT = 6-h accumulated precipitation in hundreths of an inch
 R1 = RH of model layer 1 (approximately 35 mb in thickness)
 R2 = Mean RH of model layers 2-9 (From approximately 35 mb above the ground to 500 mb)
 R3 = Mean RH of model layers 10-13 (Approximately 500 mb to tropopause)
 VVV = Vertial velocity (tenths of microbars/second) at 700 mb; Positive = rising air; negative = sinking air
 LI = Four layer lifted index (C); Negative values are added to 100
 PS = Sea level pressure (mb); leading 9 or 10 is not encoded
 DDFF = Wind direction (tens of degrees) and speed (knots) in model layer 1
 HH = 1000-500 mb thickness (decameters); leading 4 or 5 is not encoded
 T1 = Temperature (C) of model layer 1 (approximately 35 mb in thickness)
 T2 = Temperature (C) of model layer 3 (approximately at 900 mb)
 T3 = Temperature (C) of model layer 5 (approximately at 800 mb); negative values are added to 100

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INTERPRETATION OF NGM MOS BASED ON NOAA/NWS TECHNICAL PROCEDURES BULLETIN NO. 408:  NGM-BASED MOS GUIDANCE - THE FOUS14/FWC MESSAGE

SLC  SCW  NGM MOS GUIDANCE   5/09/97  1200 UTC                   - Message ID [Station, Routing, Model, Initial Date and Time (UTC)
DAY /MAY   9 /MAY  10                /MAY  11                /   - Valid Month and Day (UTC)
HOUR   18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00  - Valid Hour (UTC)
MN/MX                    50          79          52          78  - Maximum or minimum temperature for daytime/nightime period (F)
TEMP   73 77 77 65 57 54 52 62 73 77 76 66 59 56 54 62 73 76 75  - Temperature at specified time (F)
DEWPT  34 36 35 40 40 39 39 41 39 40 38 44 44 43 42 43 41 42 40  - Dew point at specified time (F)
CLDS   SC SC SC SC SC SC SC SC SC SC BK BK BK SC SC SC SC SC BK  - Opaque cloud cover forecast for specified time (see below)
WDIR   14 33 34 33 16 15 15 15 17 34 35 22 19 15 16 15 32 33 34  - Wind direction ( x10 = compass direction) for specified time )
WSPD   03 08 08 06 06 08 07 09 06 06 08 05 05 01 02 02 03 07 05  - Wind speed (kts) for specified time
POP06         0     0     0     2     5     9     8     8    11  - Probability of precipitation for 6-h period ending at specified time
POP12                     0           7          14          15  - Probability of precipitation for 12-h period ending at specified time
QPF         0/    0/    0/0   0/    0/0   0/    0/0   0/    0/0  - Precipitation amount forecast for 6-h and 12-h periods (see below)
TSV06      6/13  6/ 2  0/ 0  0/ 1 14/ 4 10/ 0  1/ 0  2/ 0 16/ 9  - Thunderstorm/conditional svr T-storm probs for 6-h period
TSV12            9/14        1/ 0       19/ 4        3/ 0        - Thunderstorm/conditional svr T-storm probs for 12-h period
PTYPE   R  R  R  R  R  R  R  R  R  R  R     R     R     R     R  - Conditional precipitation type forecast for specified time
POZP    0  1  0  0  2  2  6  0  1  0  0     1     3     1     0  - Conditional probability of freezing precip or ice pellets if precipitating
POSN    0  0  2  2  0  3  3  6  1  0  0     0     0     0     0  - Conditional probability of snow for specified time if precipitating
SNOW        0/    0/    0/0   0/    0/0   0/    0/0   0/    0/0  - Snow amount for 6- and 12 -h periods
CIG     7  7  7  7  7  7  7  7  7  7  7     7     7              - Ceiling height forecast for specified time (see below)
VIS     5  5  5  5  5  5  5  5  5  5  5     5     5              - Visibility forecast for specified time (see below)
OBVIS   N  N  N  N  N  N  N  N  N  N  N     N     N              - Obstructions to vision forecast for specified time (see below)

CLDS:					QPF Format "A/B":		SNOW format "A/B":		CIG:
 CL - Clear				 A - Value for 6-h period	 A - Value for 6-h period	 1 = < 200 ft.
 SC - Scattered				   0 = No precip		   0 = No snow			 2 = 200-400 ft.
 BK - Broken				   1 = .01-.09"			   1 = Trace - < 2"		 3 = 500-900 ft.
 OV - Overcast				   2 = .10-.24"			   2 = > or = 2"		 4 = 1000-3000 ft.
					   3 = .25-.49"						   	 5 = 3100-6500 ft.
PTYPE:					   4 = .50-.99"			 B - Value for 12-h period	 6 = 6600-12000 ft.
 R - Liquid				   5 = > or = 1.00"		   0 = No snow			 7 = > 12000 ft.
 Z - Freezing rain or ice pellets	 B - Value for 12-h period	   1 = trace - < 2"
 S - Snow				   0 = No precip		   2 = 2 - < 4"			OBVIS:
					   1 = .01-.09"			   3 = 4 - < 6"			 H = Haze
VIS:					   2 = .10-.24"			   4 = > or = 6"		 F = Fog
 1 = < 1/2 mi.				   3 = .25-.49"							 N = No haze or fog
 2 = 1/2-7/8 mi.			   4 = .50-.99"
 3 = 1 - 2 3/4 mi.			   5 = 1.00-1.99"
 4 = 3 - 5 mi.				   6 = > or = 2.00"
 5 = > 5 mi.