Description of AVN MOS Data


Line 2: First four letters are the location identifier.
        This is followed by the initial hour date and time (UTC).

DT:     Month and Day (UTC - subtract 4 hours for EDT or 5 hours for EST.)

HR:     Hour of Day (UTC - subtract 4 hours for EDT or 5 hours for EST.)

X/N     Maximum or minimum temperature in degrees F for the past 12 hours.
        (Maximum temperatures are from 1200 UTC to 0000 UTC, minimum
	temperatures are from 0000 UTC to 1200 UTC.)

TMP:    Temperatures in degees F at the hour.

DPT:    Dew point in degrees F at the hour.

CLD:    Fraction of sky covered by clouds : CL = less than .1, SC = .1 to .5, BK = .6 to .9, OV = 1.0 

WDR:    Wind direction in tens of degrees clockwise from true north from
	which the wind will blow.

WSP:    Wind speed in knots.  (Multiply by 1.17 for mph).

P06:    6 hour probability of precipitation

P12:    12 hour probability of precipitation

Q06:    6 hour precipitation amount using the following code:
          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 or more inches

Q12     12 hour precipitation amount using the following code:
	  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 more

T06:    6 hour probability of thunder (percent).
           
T12:    12 hour probability of thunder (percent).

POZ:    Probability of freezing precipitation (percent).

TYP:    Precipitation type. R = Rain, S = Snow, Z = Freezing

CIG:    Category number using the following code:
	  1 less or equal to 200 feet
	  2 200 feet to 400 feet
	  3 500 feet to 900 feet
	  4 1000 feet to 3000 feet
	  5 3100 feet to 6500 feet
	  6 6600 feet to 12000 feet
	  7 more than 12000 feet