Decoding GFS/MAV Numeric Guidance

KSLC   AVN MOS GUIDANCE    1/25/2001  1200 UTC
DT /JAN  25/JAN  26                /JAN  27                /JAN  28
HR   18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 06 12
N/X                    18          39          26          38    24
TMP  37 39 39 35 28 24 21 22 28 36 36 35 33 30 30 30 33 35 33 32 27
DPT  21 16 14 19 18 16 14 15 19 25 32 32 29 26 26 22 31 26 27 29 25
CLD  SC SC SC CL CL SC SC BK BK OV OV OV OV OV OV OV OV OV OV OV OV
WDR  27 28 27 24 21 18 16 14 14 17 13 18 19 17 14 13 16 19 22 30 28
WSP  16 13 10 04 02 02 04 03 04 06 04 04 06 08 07 05 11 12 06 01 04
P06         1     0     0    12    30    26    30    52    60 34 26
P12                     1          33          53          79    43
T06      0/ 0  0/ 0  0/ 0  0/ 0  1/ 0  2/ 0  1/ 1  3/ 0  5/ 1  2/ 0
T12            0/ 0        0/ 0        2/ 0        4/ 1    16/ 1
POZ   1  0  0  0  0  0  0  0  1  0  0  0  0 10 27 11  8  0  0  0  1
POS  56 48 70 85 96100100100 67 26 22 27 30 29 30 53 51 54 50 37 45
TYP   S  R  S  S  S  S  S  S  S  R  S  R  R  R  Z  S  S  S  S  R  R
Q06         0     0     0     0     1     1     1     2     2     1
Q12                     0           1           2           3     2
SNW                                 1                       2      
CIG   7  7  7  7  7  7  7  7  7  7  7  7  7  6  5  5  3  3  4  4  4
VIS   7  7  7  7  7  7  7  7  7  7  7  7  7  6  6  4  3  4  6  7  7
OBV   N  N  N  N  N  N  N  N  N  N  N  N  N BR BR FG FG FG BR  N  N

• HR = Forecast hour, i.e. how many hours from the model run time.
• N/X = daytime maximum/nightime minimum surface temperatures.
• TMP = surface temperature valid at that hour.
• DPT = surface dewpoint valid at that hour.
• CLD = forecast categories of total sky cover valid at that hour.
• WDR = forecasts of the 10-meter wind direction at the hour, given in tens of degrees.
• WSP = forecasts of the 10-meter wind speed at the hour, given in knots.
• P06 = probability of precipitation (PoP) during a 6-h period ending at that time.
• P12 = PoP during a 12-h period ending at that time.
• T06 = probability of thunderstorms/conditional probability of severe thunderstorms during the 6-hr period ending at the indicated time.
• T12 = probability of thunderstorms/conditional probability of severe thunderstorms during the 12-hr period ending at the indicated time.
• POZ = conditional probability of freezing pcp occurring at the hour.
• POS = conditional probability of snow occurring at the hour.
• TYP = conditional precipitation type at the hour.
• Q06 = quantitative precipitation forecast (QPF) category for liquid equivalent precipitation amount during a 6-h period ending at that time.
• Q12 = QPF category for liquid equivalent precipitation amount during a 12-h period ending at the indicated time.
• SNW = snow fall categorical forecasts during a 24-h period ending at the indicated time.
• CIG = ceiling height categorical forecasts at the hour.
• VIS = visibility categorical forecasts at the hour.
• OBV = obstruction to vision categorical forecasts at the hour.