894  
FNUS74 KOUN 221421  
FWSOUN  
 
SPOT FORECAST FOR C PILE BURN...USFWS  
NATIONAL WEATHER SERVICE NORMAN OK  
921 AM CDT MON MAY 22 2017  
 
FORECAST IS BASED ON IGNITION TIME OF 1000 CDT ON MAY 22.  
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
 
 
SCATTERED SHOWERS AND MAYBE A THUNDERSTORM WILL BE POSSIBLE TODAY WITH  
HIGHEST CHANCES THROUGH EARLY AFTERNOON. A COLD FRONT WILL MOVE THROUGH  
THE AREA EARLY TUESDAY MORNING CAUSING WINDS TO SHIFT TO THE NW BEFORE  
OR RIGHT AROUND SUNRISE.  
 
   
REST OF TODAY
 
 
SKY/WEATHER.........CLOUDY (85-95 PERCENT). CHANCE OF SHOWERS AND  
ISOLATED THUNDERSTORMS.  
TEMPERATURE.........63 AT IGNITION...MAX 69.  
RH..................72 PERCENT AT IGNITION...MIN 57 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......WINDS SOUTHWEST AT 7 MPH AT  
IGNITION...OTHERWISE SOUTHWEST WINDS 6 TO 8 MPH  
IN THE LATE MORNING AND AFTERNOON. GUSTY AND  
ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS.  
MIXING HEIGHT.......2400 FT AGL AT IGNITION...OTHERWISE 2400 FT AGL  
INCREASING TO 4500-4800 FT AGL LATE IN THE  
MORNING, THEN INCREASING TO 6600-7800 FT AGL  
EARLY IN THE AFTERNOON DECREASING TO 1100-1600  
FT AGL LATE IN THE AFTERNOON.  
TRANSPORT WINDS.....SOUTHWEST 6 TO 8 MPH IN THE LATE MORNING AND  
AFTERNOON.  
SMOKE DISPERSAL.....FAIR /27400 KNOT-FT/ AT IGNITION. MAX...GOOD  
/58100 KNOT-FT/ INCREASING TO EXCELLENT (79700  
KNOT-FT) EARLY IN THE AFTERNOON, THEN  
DECREASING TO POOR (5300 KNOT-FT) LATE IN THE  
AFTERNOON.  
 
TIME (CDT) 10 AM NOON 2 PM 4 PM  
SKY (%).........85 86 90 91  
WEATHER COV.....CHANCE CHANCE CHANCE CHANCE  
WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR  
TSTM COV........ISOLTD ISOLTD ISOLTD ISOLTD  
TEMP............63 66 68 69  
RH..............72 63 57 59  
20 FT WIND......SW 8 W 7 W 7 SW 6  
20 FT WIND GUST.15 10 10 10  
MIX HGT (FT)....2400 4800 7800 1100  
TRANSPORT WIND..SW 13 S 14 SW 14 SW 6  
VRATE KTFT/100027 58 94 5  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT). CHANCE OF RAIN  
SHOWERS AND ISOLATED THUNDERSTORMS.  
TEMPERATURE.........MIN 52.  
RH..................MAX 93 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......NORTHWEST WINDS 5 TO 7 MPH. GUSTY AND ERRATIC  
WINDS EXPECTED NEAR THUNDERSTORMS.  
MIXING HEIGHT.......200-1600 FT AGL.  
TRANSPORT WINDS.....NORTHWEST 5 TO 7 MPH.  
SMOKE DISPERSAL.....POOR (0 KNOT-FT).  
 
TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM  
SKY (%).........91 74 61 61 65 58  
WEATHER COV.....CHANCE CHANCE CHANCE CHANCE CHANCE CHANCE  
WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR  
TSTM COV........ISOLTD ISOLTD ISOLTD ISOLTD ISOLTD ISOLTD  
TEMP............69 66 62 60 58 55  
RH..............61 68 78 81 86 93  
20 FT WIND......S 6 S 6 SW 5 W 5 W 6 NW 6  
20 FT WIND GUST.10 10 10 10  
MIX HGT (FT)....1600 500 200 200 200 300  
TRANSPORT WIND..W 3 N 5 NE 3 S 3 SW 6 W 10  
VRATE KTFT/10005 0 0 1 1 3  
   
TUESDAY
 
 
SKY/WEATHER.........PARTLY SUNNY (60-70 PERCENT). CHANCE OF RAIN  
SHOWERS AND ISOLATED THUNDERSTORMS EARLY IN THE  
MORNING. SLIGHT CHANCE OF RAIN SHOWERS AND  
ISOLATED THUNDERSTORMS IN THE AFTERNOON.  
TEMPERATURE.........MAX 69.  
RH..................MIN 45 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......NORTH WINDS 7 TO 14 MPH. GUSTY AND ERRATIC  
WINDS EXPECTED NEAR THUNDERSTORMS EARLY IN THE  
MORNING. GUSTY AND ERRATIC WINDS EXPECTED NEAR  
THUNDERSTORMS IN THE AFTERNOON.  
MIXING HEIGHT.......200-1800 FT AGL INCREASING TO 7600-7900 FT AGL.  
TRANSPORT WINDS.....NORTH 7 TO 14 MPH.  
SMOKE DISPERSAL.....POOR TO GOOD (1700-50200 KNOT-FT) INCREASING TO  
EXCELLENT (178200 KNOT-FT).  
 
TIME (CDT) 6 AM 9 AM NOON 3 PM  
SKY (%).........58 80 71 50  
WEATHER COV.....CHANCE S CHC  
WEATHER TYPE....RNSHWR NONE NONE RNSHWR  
TSTM COV........ISOLTD ISOLTD  
TEMP............55 60 65 67  
RH..............86 69 54 49  
20 FT WIND......NW 7G10 N 12G15 N 13G20 N 14G20  
MIX HGT (FT)....200 1800 5200 7600  
TRANSPORT WIND..NW 12 N 23 N 24 N 23  
VRATE KTFT/10002 50 108 163  
 

 
FORECASTER...MAXWELL  
REQUESTED BY...BARRY SMART  
TYPE OF REQUEST...PRESCRIBED  
.TAG 1709867.0/OUN  
.EMAIL BARRY_SMART@FWS.GOV  
 
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