115 FNUS74 KTSA 281348 FWSTSA Spot Forecast for Razorback RxB...BIA Eastern Oklahoma Region National Weather Service Tulsa OK 748 AM CST Sat Feb 28 2026 Forecast is based on ignition time of 1000 CST on February 28. 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... A weak surface boundary over northeast Oklahoma will lift northward during the morning hours with southwesterly winds returning late morning. Rain chances develop Saturday late morning and remain forecast through the day ahead of a cold front dropping southeast through northeast Oklahoma this evening. A wind shift out of the north northeast is expected behind the frontal passage. .REST OF TODAY... Sky/weather.........Mostly sunny (35-45 percent). Chance of showers in the afternoon. Max temperature.....Around 75. Min humidity........31 percent. Dewpoint............43. Wind (20 ft)........Southwest winds 6 to 9 mph. Gusts up to 21 mph late in the morning. Mixing height.......5100 ft AGL. Transport winds.....Southwest 15 to 24 mph increasing to 17 to 26 mph in the afternoon. Smoke dispersal.....Good (45245 knot-ft) early in the morning increasing to excellent (120000 knot-ft) in the afternoon. Stability class.....3. 1700FT Avg MIX T(F).71. TIME (CST) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........51 56 49 42 41 37 48 28 Weather cov..... CHC CHC CHC CHC CHC CHC Weather type.... RW RW RW RW RW RW Tstm cov........ Temp............65 69 72 75 74 75 75 73 Dewpoint........43 43 43 42 44 45 45 45 RH..............45 39 35 31 34 34 34 37 20 FT wind dir..S SW SW SW SW SW SW SW 20 FT wind spd..7 9 9 9 9 9 7 6 20 FT wind gust.13 16 17 17 16 16 14 11 Mix hgt (kft)...1.5 2.6 3.9 4.3 4.5 5.1 3.7 1.8 Transp wind dir.S SW SW SW SW SW SW SW Transp wind spd.15 20 24 25 21 26 25 17 Vrate kt-ft/1K..45 45 120 120 120 120 120 120 Ventrate Cat....FR FR VGD VGD VGD VGD VGD VGD 1700FT Mix T(F).71 70 70 71 72 73 73 73 .TONIGHT... Sky/weather.........Partly cloudy (30-40 percent) then becoming mostly cloudy (50-60 percent). Slight chance of thunderstorms early in the evening. Slight chance of rain showers in the evening. Min temperature.....Around 43. Max humidity........65 percent. Dewpoint............45 decreasing to 35. Wind (20 ft)........Southwest winds around 5 mph early in the evening becoming light, then becoming south around 5 mph early in the evening shifting to the northeast 5 to 9 mph. Gusty and erratic winds expected near thunderstorms early in the evening. Mixing height.......300 ft AGL. Transport winds.....Southwest 10 to 15 mph shifting to the northeast 12 to 21 mph in the late evening and overnight. Smoke dispersal.....Fair (17049 knot-ft) early in the evening decreasing to poor (7868 knot-ft) late in the night. Stability class.....6. 1700FT Avg MIX T(F).69 decreasing to 58 overnight. TIME (CST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky (%).........28 28 34 40 46 38 29 30 25 45 58 51 Weather cov.....SCH SCH SCH SCH SCH SCH Weather type....RW RW RW RW RW RW Tstm cov........SCH SCH SCH Temp............70 67 63 61 59 57 55 53 51 49 47 46 Dewpoint........47 46 45 45 44 42 41 39 38 37 35 34 RH..............44 47 52 56 57 57 59 59 61 63 63 63 20 FT wind dir..SW SW S N N NE NE NE NE NE NE E 20 FT wind spd..4 3 4 4 5 5 6 6 7 8 8 9 20 FT wind gust.7 6 7 7 8 10 10 10 12 13 13 14 Mix hgt (kft)...0.6 0.4 0.3 0.3 0.5 0.7 0.9 0.9 0.9 0.9 0.8 0.9 Transp wind dir.SW S S SW NE NE NE NE NE NE E E Transp wind spd.15 12 12 10 13 12 14 17 21 21 18 18 Vrate kt-ft/1K..8 8 8 8 8 8 17 17 17 17 17 17 Ventrate Cat....PR PR PR PR PR PR PR PR PR PR PR PR 1700FT Mix T(F).73 73 73 73 72 71 69 66 62 59 56 54 .SUNDAY... Sky/weather.........Mostly cloudy (75-85 percent). Slight chance of rain showers in the morning, then rain showers likely and slight chance of thunderstorms in the afternoon. Max temperature.....Around 57. Min humidity........45 percent. Dewpoint............35 increasing to 40 late in the afternoon. Wind (20 ft)........East winds 9 to 10 mph. Gusts up to 21 mph early in the morning. Gusty and erratic winds expected near thunderstorms in the afternoon. Mixing height.......2000 ft AGL. Transport winds.....East 18 to 24 mph. Smoke dispersal.....Good (36721 knot-ft). Stability class.....4. 1700FT Avg MIX T(F).50. TIME (CST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........74 70 77 83 84 84 85 86 87 88 88 88 Weather cov.....SCH SCH SCH SCH SCH SCH LKY LKY LKY LKY LKY LKY Weather type....RW RW RW RW RW RW RW RW RW RW RW RW Tstm cov........ SCH SCH SCH SCH SCH SCH Temp............45 44 46 49 52 54 56 56 56 55 54 52 Dewpoint........33 33 33 33 33 34 35 37 38 40 41 42 RH..............63 65 60 54 48 47 45 49 51 57 61 69 20 FT wind dir..E NE E E E E E E E E E E 20 FT wind spd..9 9 8 10 9 9 9 9 9 9 9 8 20 FT wind gust.14 14 16 17 16 16 17 16 16 17 14 14 Mix hgt (kft)...0.9 1.0 1.2 1.4 1.7 1.9 2.0 2.0 2.0 1.9 1.8 1.8 Transp wind dir.E E E E E E E E E E E E Transp wind spd.18 23 24 23 23 22 22 21 20 20 21 22 Vrate kt-ft/1K..37 37 37 37 37 37 39 39 39 39 39 39 Ventrate Cat....PR PR PR PR PR PR PR PR PR PR PR PR 1700FT Mix T(F).53 53 54 55 54 52 50 50 49 49 47 46 $$ Forecaster...JANKOWSKI Requested by...Josh Williams Type of request...PRESCRIBED .TAG 2604312.0/TSA .DELDT 02/28/26 .FormatterVersion 2.0.0 .EMAIL joshuad.williams@bia.gov