Decoding MET Numeric Guidance

 KDCA   ETA MOS GUIDANCE    1/24/2004  1200 UTC                
 DT /JAN  24/JAN  25                /JAN  26                /JAN  27  
 HR   18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 06 12
 N/X                    15          24          20          30    28
 TMP  36 35 30 24 21 18 16 21 23 22 23 21 20 21 22 24 27 29 29 29 30
 DPT  14  9  3  0 -2 -4 -3 -3 -2  2  8 12 15 17 19 22 24 25 25 24 21
 CLD  CL CL FW FW SC SC BK OV OV OV OV OV OV OV OV OV OV OV OV BK FW
 WDR  34 33 34 35 34 36 36 06 14 08 05 04 02 02 03 05 05 06 03 35 34
 WSP  07 14 14 11 10 10 08 03 02 05 07 11 11 12 10 07 04 04 07 11 10
 P06         0     0     0     0    55    76    60    34    36 13  9
 P12                     0          58          86          48    25
 Q06         0     0     0     0     1     1     1     0     1     0
 Q12                     0           1           2           1     0
 T06      0/ 0  0/ 9  0/ 1  1/ 0  3/ 0  0/ 0  0/ 1  0/ 0  3/ 0  0/ 0
 T12            1/ 9        1/ 1        3/ 0        1/ 1     1/ 0  
 SNW                     0                       6                 0
 CIG   6  8  8  8  8  7  7  7  7  4  4  3  2  3  3  2  2  1  1  2  8 

• DT = Day of the month, denoting the standard 3 or 4 letter station identifier.
• 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.
• 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.