649
FNUS74 KTSA 111535
FWSTSA
SPOT FORECAST FOR RAZORBACK RXB...BIA EASTERN OKLAHOMA REGION
NATIONAL WEATHER SERVICE TULSA OK
935 AM CST WED FEB 11 2026
FORECAST IS BASED ON IGNITION TIME OF 1100 CST ON FEBRUARY 12.
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
BREEZY SOUTHERLY WINDS ARE EXPECTED AT IGNITION TIME, WHICH WILL
PERSIST THROUGH THE AFTERNOON AT 15-20 MPH. WINDS WILL WEAKEN AND
BECOME SOUTHEASTERLY DURING THE EVENING AND OVERNIGHT HOURS.
PARTLY CLOUDY SKIES ARE EXPECTED WITH THE CHANCE OF RAIN BELOW 5
PERCENT. RH WILL BE LOW DURING THE AFTERNOON AT 30-40%, INCREASING
TO AROUND 70% THURSDAY NIGHT.
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT).
MAX TEMPERATURE.....AROUND 63.
MIN HUMIDITY........31 PERCENT.
DEWPOINT............32.
WIND (20 FT)........SOUTH WINDS 5 TO 6 MPH LATE IN THE MORNING
BECOMING LIGHT.
MIXING HEIGHT.......3900 FT AGL.
TRANSPORT WINDS.....SOUTH 9 TO 16 MPH.
SMOKE DISPERSAL.....GOOD (30163 KNOT-FT).
STABILITY CLASS.....3.
1700FT AVG MIX T(F).56.
TIME (CST) 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........52 56 50 49 43 56 34
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
TEMP............55 59 61 62 63 63 61
DEWPOINT........30 31 31 31 33 33 34
RH..............38 34 32 31 33 33 36
20 FT WIND DIR..S S S S S S S
20 FT WIND SPD..6 6 6 5 5 4 2
20 FT WIND GUST.11 11 10 10 10 7 6
MIX HGT (KFT)...2.1 2.7 3.2 3.5 3.9 3.2 1.4
TRANSP WIND DIR.S S S S S S S
TRANSP WIND SPD.16 15 15 14 12 12 9
VRATE KT-FT/1K..30 43 43 43 43 43 43
VENTRATE CAT....PR FR FR FR FR FR FR
1700FT MIX T(F).54 54 55 57 58 59 59
THURSDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT).
MIN TEMPERATURE.....AROUND 43.
MAX HUMIDITY........73 PERCENT.
DEWPOINT............34.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTHEAST AROUND 5 MPH
LATE IN THE EVENING, THEN BECOMING LIGHT
OVERNIGHT.
MIXING HEIGHT.......400 FT AGL.
TRANSPORT WINDS.....SOUTHEAST 8 TO 12 MPH.
SMOKE DISPERSAL.....GOOD (39344 KNOT-FT) EARLY IN THE EVENING
DECREASING TO FAIR (21639 KNOT-FT) LATE IN THE
NIGHT.
STABILITY CLASS.....6.
1700FT AVG MIX T(F).58.
TIME (CST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........38 48 40 32 30 28 26 29 32 35 35 36
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
TEMP............59 57 54 51 49 48 47 46 45 45 44 43
DEWPOINT........35 34 34 34 34 33 33 34 34 35 35 35
RH..............40 42 47 52 55 56 58 61 65 69 71 73
20 FT WIND DIR..SE SE SE SE SE SE SE SE SE SE SE SE
20 FT WIND SPD..2 2 2 3 3 4 4 4 3 3 3 3
20 FT WIND GUST.6 5 6 6 7 7 7 7 7 7 7 6
MIX HGT (KFT)...0.5 0.5 0.5 0.5 0.5 0.6 0.6 0.6 0.5 0.4 0.4 0.4
TRANSP WIND DIR.SE SE SE SE SE S S S SE SE SE SE
TRANSP WIND SPD.8 10 10 9 9 10 12 12 10 10 10 9
VRATE KT-FT/1K..22 28 28 25 29 35 39 37 31 26 24 23
VENTRATE CAT....PR PR PR PR PR PR PR PR PR PR PR PR
1700FT MIX T(F).59 59 59 59 58 58 57 57 58 58 58 58
FRIDAY
SKY/WEATHER.........PARTLY SUNNY (55-65 PERCENT). CHANCE OF RAIN
SHOWERS IN THE AFTERNOON.
MAX TEMPERATURE.....AROUND 68.
MIN HUMIDITY........43 PERCENT.
DEWPOINT............36 INCREASING TO 45.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTHEAST AROUND 5 MPH
LATE IN THE MORNING, THEN BECOMING LIGHT LATE
IN THE AFTERNOON.
MIXING HEIGHT.......4000 FT AGL.
TRANSPORT WINDS.....SOUTHEAST 6 TO 9 MPH.
SMOKE DISPERSAL.....POOR (5245 KNOT-FT) EARLY IN THE MORNING
INCREASING TO GOOD (47868 KNOT-FT) IN THE
AFTERNOON.
STABILITY CLASS.....4.
1700FT AVG MIX T(F).60.
TIME (CST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........36 44 53 61 60 58 57 62 67 72 77 83
WEATHER COV..... CHC CHC CHC CHC CHC CHC
WEATHER TYPE.... RW RW RW RW RW RW
TSTM COV........
TEMP............43 45 48 51 55 59 63 66 67 67 66 65
DEWPOINT........35 36 37 38 40 42 43 44 44 44 45 46
RH..............72 70 66 61 56 52 48 45 43 43 46 51
20 FT WIND DIR..SE SE SE SE SE SE SE SE SE SE SE SE
20 FT WIND SPD..3 3 3 3 3 4 4 4 4 4 4 3
20 FT WIND GUST.6 6 7 7 7 7 7 7 7 7 7 6
MIX HGT (KFT)...0.4 0.4 0.4 0.6 1.0 1.6 2.3 3.1 3.8 4.0 3.2 2.0
TRANSP WIND DIR.SE SE SE SE SE S S S S S SE SE
TRANSP WIND SPD.9 9 9 9 8 7 6 6 6 6 6 6
VRATE KT-FT/1K..24 22 23 31 48 5 20 20 20 20 20 20
VENTRATE CAT....PR PR PR PR FR PR PR PR PR PR PR PR
1700FT MIX T(F).58 58 58 58 58 58 58 59 61 62 63 63
FORECASTER...HODGES
REQUESTED BY...JOSH WILLIAMS
TYPE OF REQUEST...PRESCRIBED
.TAG 2602455.0/TSA
.DELDT 02/11/26
.FORMATTERVERSION 2.0.0
.EMAIL JOSHUAD.WILLIAMS@BIA.GOV
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