Decoding ETA MOS - Millersville Meteorology

Decoding ETA MOS(aka. "MET")

 KLNS   ETA MOS GUIDANCE    5/21/2003  1200 UTC                
 DT /MAY  21/MAY  22                /MAY  23                /  
 HR   18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 
 N/X                    51          62          52          65 
 TMP  61 61 59 55 53 53 54 58 59 60 58 55 53 53 53 57 62 62 61 
 DPT  53 53 51 51 51 50 51 52 52 53 53 51 51 50 51 53 56 57 57 
 CLD  OV OV OV OV OV OV OV OV OV OV OV OV OV OV OV OV OV OV OV 
 WDR  01 01 02 02 02 04 05 07 08 08 08 11 08 08 07 09 11 08 07 
 WSP  03 04 06 05 06 06 08 07 04 05 09 04 05 07 10 09 09 09 14 
 P06        45    25    20    31    47    55    82    69    49 
 P12                    32          53          93          79 
 Q06         1     0     0     0     1     1     3     3     3 
 Q12                     0           1           3           4 
 T06      9/19  5/10  0/ 0  1/ 9  9/24 16/10  4/ 0 12/10 20/30 
 T12           10/19        1/ 9       16/24       15/10

HR = Forecast hour (i.e. how many hours from model run time).
N/X = Minimum/Maximum 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.
Q06 = quantitative precipitation forecast (QPF) category for liquid-equivalent precip. during a 6-h period.
Q12 = QPF category for liquid-equivalent precip. during a 12-h period ending at indicated time.
T06 = probability of thunderstorms/conditional probability of severe thunderstorms during the 6-hr period.
T12 = probability of thunderstorms/conditional probability of severe thunderstorms during the 12-hr period.

Definition of Categorical Forecasts
QPF (Q) Categories 0 - no precipitation 1 - 0.01 to 0.09 inches 2 - 0.10 to 0.24 inches 3 - 0.25 to 0.49 inches 4 - 0.50 to 0.99 inches 5 - 1.00 to 1.99 inches 6 - 2.00 inches or greater	Cloud (CLD) Categories CL - "clear" SC - "scattered" (1 to 4 eighths) BK - "broken" (5 to 7 eighths) OV - "overcast"

Millersville University Meteorology