225  
FNUS74 KTSA 122056  
FWSTSA  
 
SPOT FORECAST FOR WALTON PRESERVE RX...THE NATURE CONSERVANCY  
NATIONAL WEATHER SERVICE TULSA OK  
356 PM CDT WED APR 12 2017  
 
FORECAST IS BASED ON IGNITION TIME OF 0900 CDT ON APRIL 13.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
 
PLEASE CONTACT NWS TULSA AT (918)838-7838, IF YOU HAVE QUESTIONS  
OR CONCERNS WITH THIS FORECAST.  
   
DISCUSSION
 
 
STRONG SOUTH WINDS RETURN ON FRIDAY AND WILL CONTINUE INTO  
SATURDAY AHEAD OF THE NEXT FRONT. THE STRONG WINDS WILL RAISE FIRE  
WEATHER CONCERNS, ALTHOUGH RECENT GREEN UP WILL ACT TO LIMIT THE  
OVERALL POTENTIAL.  
   
THURSDAY
 
 
SKY/WEATHER.........PARTLY SUNNY (65-75 PERCENT). SLIGHT CHANCE OF  
RAIN SHOWERS AND ISOLATED THUNDERSTORMS IN THE  
AFTERNOON.  
MAX TEMPERATURE.....AROUND 77.  
MIN HUMIDITY........48 PERCENT.  
DEWPOINT............56.  
WIND (20 FT)........LIGHT WINDS BECOMING SOUTH 5 TO 6 MPH LATE IN  
THE MORNING. GUSTY AND ERRATIC WINDS EXPECTED  
NEAR THUNDERSTORMS IN THE AFTERNOON.  
MIXING HEIGHT.......400-1800 FT AGL INCREASING TO 4000-4700 FT AGL.  
TRANSPORT WINDS.....SOUTH 2 TO 10 MPH INCREASING TO 12 TO 14 MPH  
LATE IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (100 KNOT-FT).  
STABILITY CLASS.....4.  
1700FT AVG MIX T(F).74.  
 
TIME (CDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........76 80 74 68 62 60 58 56 57  
WEATHER COV..... SCH SCH SCH SCH SCH  
WEATHER TYPE.... RW RW RW RW RW  
TSTM COV........ ISO ISO ISO ISO ISO  
TEMP............63 67 69 71 72 74 76 77 77  
DEWPOINT........57 58 58 57 57 57 56 56 56  
RH..............81 74 68 62 59 55 50 48 49  
20 FT WIND DIR..S S S S S S S S S  
20 FT WIND SPD..4 5 6 6 6 6 6 6 6  
20 FT WIND GUST.5 10 10 10 10 10 10 10  
MIX HGT (KFT)...1.4 1.8 2.4 3.0 3.5 4.2 4.6 4.7 4.0  
TRANSP WIND DIR.S S S S S S S S S  
TRANSP WIND SPD.7 9 9 9 9 10 12 13 14  
VRATE KT-FT/1K..4 4 4 4 8 8 8 8 8  
1700FT MIX T(F).74 74 73 72 72 74 76 77 76  
   
THURSDAY NIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT). SLIGHT CHANCE OF  
RAIN SHOWERS AND ISOLATED THUNDERSTORMS.  
MIN TEMPERATURE.....AROUND 59.  
MAX HUMIDITY........89 PERCENT.  
DEWPOINT............56.  
WIND (20 FT)........SOUTH WINDS AROUND 5 MPH EARLY IN THE EVENING  
BECOMING LIGHT. GUSTY AND ERRATIC WINDS  
EXPECTED NEAR THUNDERSTORMS.  
MIXING HEIGHT.......1200-2900 FT AGL DECREASING TO 0-800 FT AGL  
LATE IN THE EVENING.  
TRANSPORT WINDS.....SOUTH 9 TO 17 MPH DECREASING TO 5 TO 7 MPH  
AFTER MIDNIGHT.  
SMOKE DISPERSAL.....POOR (500 KNOT-FT).  
STABILITY CLASS.....5.  
1700FT AVG MIX T(F).76.  
 
TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........57 58 61 64 67 67 67 67 71 74 78 75  
WEATHER COV.....SCH SCH SCH SCH SCH SCH SCH SCH SCH SCH SCH SCH  
WEATHER TYPE....RW RW RW RW RW RW RW RW RW RW RW RW  
TSTM COV........ISO ISO ISO ISO ISO ISO ISO ISO ISO ISO ISO ISO  
TEMP............76 74 71 68 66 64 63 62 61 61 60 59  
DEWPOINT........57 57 57 57 57 57 57 57 57 56 56 56  
RH..............52 56 62 68 74 78 81 83 85 85 87 89  
20 FT WIND DIR..S S S S S S S S S S S S  
20 FT WIND SPD..6 6 5 5 4 4 5 5 5 4 4 4  
20 FT WIND GUST.10 10 5 5 5 5 5  
MIX HGT (KFT)...2.9 2.0 1.6 1.4 1.2 0.8 0.5 0.2 0.1 0.1 0.2 0.4  
TRANSP WIND DIR.S S S S S S S S S S S S  
TRANSP WIND SPD.16 17 16 14 12 9 7 6 5 5 5 5  
VRATE KT-FT/1K..8 5 5 5 5 5 5 1 1 1 1 1  
1700FT MIX T(F).75 74 75 77 78 78 77 76 76 76 75 75  
   
FRIDAY
 
 
SKY/WEATHER.........PARTLY SUNNY (60-70 PERCENT). SLIGHT CHANCE OF  
RAIN SHOWERS AND ISOLATED THUNDERSTORMS IN THE  
MORNING.  
MAX TEMPERATURE.....AROUND 77.  
MIN HUMIDITY........47 PERCENT.  
DEWPOINT............56.  
WIND (20 FT)........LIGHT WINDS BECOMING SOUTH 5 TO 10 MPH WITH  
GUSTS TO AROUND 25 MPH EARLY IN THE MORNING.  
GUSTY AND ERRATIC WINDS EXPECTED NEAR  
THUNDERSTORMS IN THE MORNING.  
MIXING HEIGHT.......800-2600 FT AGL INCREASING TO 3300-5100 FT AGL  
IN THE AFTERNOON.  
TRANSPORT WINDS.....SOUTH 5 TO 12 MPH INCREASING TO 25 TO 29 MPH.  
SMOKE DISPERSAL.....POOR TO FAIR (500-19500 KNOT-FT).  
STABILITY CLASS.....4.  
1700FT AVG MIX T(F).72.  
 
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........71 68 67 67 66 63 60 57 60 63 66 58  
WEATHER COV.....SCH SCH SCH SCH SCH SCH SCH  
WEATHER TYPE....RW RW RW RW RW RW RW  
TSTM COV........ISO ISO ISO ISO ISO ISO ISO  
TEMP............59 60 62 65 68 71 72 73 75 76 77 77  
DEWPOINT........56 56 57 57 58 57 57 56 56 55 55 55  
RH..............90 87 83 74 69 62 59 55 52 48 47 47  
20 FT WIND DIR..S S S S S S S S S S S S  
20 FT WIND SPD..4 5 5 6 7 9 10 12 12 11 11 10  
20 FT WIND GUST.5 10 10 15 15 25 25 25 20 20  
MIX HGT (KFT)...0.8 1.1 1.4 1.6 2.0 2.6 3.3 3.9 4.7 5.1 4.8 3.7  
TRANSP WIND DIR.S S S S S S S S S S S S  
TRANSP WIND SPD.5 6 8 12 15 21 25 29 29 28 26 26  
VRATE KT-FT/1K..1 11 11 11 11 11 11 20 20 20 20 20  
1700FT MIX T(F).75 74 72 69 68 69 71 73 75 76 77 77  
 

 
FORECASTER...P.MURRAY  
REQUESTED BY...KYLE LAPHAM  
TYPE OF REQUEST...PRESCRIBED  
.TAG 1706659.0/TSA  
.EMAIL KLAPHAM@TNC.ORG  
 
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