249  
FNUS74 KOUN 211321  
FWSOUN  
 
SPOT FORECAST FOR SPRING HILL...OK STATE PARKS  
NATIONAL WEATHER SERVICE NORMAN OK  
821 AM CDT THU OCT 21 2021  
 
FORECAST IS BASED ON IGNITION TIME OF 0900 CDT ON OCTOBER 21.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
 
PLEASE CONTACT OUR OFFICE AT (405) 325-3816 IF YOU HAVE QUESTIONS  
OR CONCERNS WITH THIS FORECAST.  
   
DISCUSSION
 
 
AT THE BEGINNING OF THE BURN TIME, WINDS WILL BE LIGHT AND  
VARIABLE AS A HIGH PRESSURE SYSTEM MOVES OVER NORTHWEST OKLAHOMA.  
BY EARLY AFTERNOON, WINDS WILL BE LIGHT AND SOUTHERLY. HIGH  
TEMPERATURES SHOULD BE IN THE LOW TO MID 70S WITH SUNNY SKIES AND  
MINIMUM RH VALUES IN THE UPPER 20S.  
   
REST OF TODAY
 
 
SKY/WEATHER.........SUNNY (15-25 PERCENT).  
MAX TEMPERATURE.....AROUND 73.  
MIN HUMIDITY........29 PERCENT.  
WIND (20 FT)........LIGHT WINDS BECOMING SOUTH 5 TO 7 MPH IN THE  
AFTERNOON.  
MIXING HEIGHT.......4800 FT AGL.  
TRANSPORT WINDS.....WEST AROUND 2 MPH INCREASING TO 3 TO 5 MPH LATE  
IN THE MORNING, THEN SHIFTING TO THE SOUTHEAST  
5 TO 6 MPH EARLY IN THE AFTERNOON SHIFTING TO  
THE SOUTHWEST 7 TO 8 MPH LATE IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (3800 KNOT-FT) EARLY IN THE MORNING  
INCREASING TO FAIR (16700 KNOT-FT) IN THE  
AFTERNOON.  
 
TIME (CDT) 9 AM 11 AM 1 PM 3 PM 5 PM  
SKY (%).........4 4 12 25 33  
WEATHER COV.....  
WEATHER TYPE....NONE NONE NONE NONE NONE  
TSTM COV........  
TEMP............46 60 68 72 73  
RH..............76 46 33 30 30  
20 FT WIND DIR..W S S S S  
20 FT WIND SPD..2 3 5 6 7  
20 FT WIND GUST. 4 6 7 10  
MIX HGT (FT)....300 1400 2600 4300 4400  
TRANSPORT WIND..W 2 W 3 SE 5 SW 7 SW 8  
VRATE KTFT/1000.4 6 10 14 17  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT) THEN BECOMING  
MOSTLY CLOUDY (60-70 PERCENT) THEN BECOMING  
PARTLY CLOUDY (25-35 PERCENT).  
MIN TEMPERATURE.....AROUND 46.  
MAX HUMIDITY........96 PERCENT.  
WIND (20 FT)........SOUTH WINDS 5 TO 8 MPH.  
MIXING HEIGHT.......300 FT AGL.  
TRANSPORT WINDS.....SOUTH AROUND 8 MPH INCREASING TO 6 TO 12 MPH,  
THEN SHIFTING TO THE SOUTHWEST AROUND 9 MPH  
EARLY IN THE MORNING.  
SMOKE DISPERSAL.....FAIR (17000 KNOT-FT) EARLY IN THE EVENING  
DECREASING TO POOR (0 KNOT-FT) LATE IN THE  
NIGHT.  
 
TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM  
SKY (%).........46 56 73 46 19 11  
WEATHER COV.....  
WEATHER TYPE....NONE NONE NONE NONE NONE NONE  
TSTM COV........  
TEMP............71 61 56 53 49 48  
RH..............33 50 59 67 76 82  
20 FT WIND DIR..S S S S S S  
20 FT WIND SPD..7 6 5 5 5 5  
20 FT WIND GUST.10 6 6 6 6  
MIX HGT (FT)....2400 300 400 400 400 400  
TRANSPORT WIND..S 8 SE 6 S 12 S 8 S 9 S 10  
VRATE KTFT/1000.17 13 8 3 0 0  
   
FRIDAY
 
 
SKY/WEATHER.........SUNNY (5-15 PERCENT).  
MAX TEMPERATURE.....AROUND 79.  
MIN HUMIDITY........44 PERCENT.  
WIND (20 FT)........SOUTHWEST WINDS 5 TO 12 MPH.  
MIXING HEIGHT.......4100 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST 5 TO 12 MPH SHIFTING TO THE WEST 7 TO  
8 MPH EARLY IN THE MORNING, THEN SHIFTING TO  
THE SOUTH 12 TO 14 MPH IN THE LATE MORNING AND  
AFTERNOON.  
SMOKE DISPERSAL.....POOR (2900 KNOT-FT) EARLY IN THE MORNING  
INCREASING TO FAIR (26800 KNOT-FT) IN THE  
AFTERNOON.  
 
TIME (CDT) 6 AM 9 AM NOON 3 PM  
SKY (%).........17 8 16 6  
WEATHER COV.....  
WEATHER TYPE....NONE NONE NONE NONE  
TSTM COV........  
TEMP............46 51 70 79  
RH..............89 88 55 44  
20 FT WIND DIR..SW S SW S  
20 FT WIND SPD..5 7 12 12  
20 FT WIND GUST.6 10 14 14  
MIX HGT (FT)....400 400 2200 4100  
TRANSPORT WIND..S 9 W 8 S 14 S 14  
VRATE KTFT/1000.3 15 26 24  
 

 
FORECASTER...BUNKER  
REQUESTED BY...RICHARD BAKER  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2119876.0/OUN  
.DELDT 10/21/21  
.FORMATTERVERSION 1.0.26  
.EMAIL RICHARD.BAKER@TRAVELOK.COM  
 
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