Explaination of NFDRS Forecasts

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FNUS81 KBTV 292000

FWMCAE
NATIONAL FIRE DANGER RATING FORECAST
NATIONAL WEATHER SERVICE COLUMBIA SC
314 PM EDT AUG 1 2013

FCST,Stat. ID,yymmdd, hr,w,T, RH,Y,M,D, sp,10, tx, tm, hx,hm,p1,p2,F
fcst,381201,130803,13,2,90,56,2,2,ssw,06,,90,71,100,55,0,0,n
fcst,382301,130803,13,1,93,46,2,2,sw,05,,93,72,93,46,0,0,n
fcst,382603,130803,13,2,91,56,2,2,ssw,05,,91,72,100,56,0,0,n
fcst,383101,130803,13,1,93,51,2,2,ssw,03,,93,72,100,51,0,0,n
fcst,383401,130803,13,1,92,56,2,2,s,04,,92,72,100,56,0,0,n
fcst,383701,130803,13,1,93,49,4,4,ssw,04,,93,72,100,49,0,0,n

FCST	Forecast for NFDRS point
Stat. ID	See Table Below for all Site Id's for CAE Forecast Points
yymmdd	year, month, and date (remember the date is always the next day)
hr	forecast is valid for 1300 local the next day
w	weather (0 is clear, 1 is scattered clouds, 2 is broken clouds, 3 is overcast, 4 is fog, 5 is drizzle, 6 is rain, 7 is snow/sleet, 8 is showers, and 9 is thunderstorms
T	Dry bulb temperature at 1300 local tomorrow
RH	Relative humidity at 1300 local tomorrow
Y	Lightning activity level from 1300 local today to 0600 local tonight (1 is none, 2 is 1-8 strikes, 3 is 9-15 strikes, 4 is 15-25 strikes, 5 is more than 25 strikes, 6 is dry lightning)
M	Lightning activity level from 0600 local tonight to 1300 local the next day (see table above for values)
D	Wind direction (N, NE, E, SE, S, SW, W, NW)
sp	Wind speed in miles per hour
10	10 hour fuel moisture value (not forecast by us)
tx	Maximum temperature from 1300 today to 1300 tomorrow
tm	Minimum temperature from 1300 today to 1300 tomorrow
hx	Maximum relative humidity from 1300 today to 1300 tomorrow
hm	Minimum relative humidity from 1300 today to 1300 tomorrow
p1	Precipitation duration (1300-0600 period) in whole hours
p2	Precipitation duration (0600-1300 period) in whole hours
F	Wet Flag (Y for yes and N for no) Y is used for widespread rain