FNUS74 KTSA 211431 FWSTSA Spot Forecast for Fossil Bluff Ranch Fire Hazxard Reduction...Fossil Bluff Ranch National Weather Service Tulsa OK 931 AM CDT Sat Mar 21 2026 Forecast is based on ignition time of 1200 CDT on March 21. 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. ...FIRE WEATHER WATCH IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY EVENING... .DISCUSSION... Temperature near 80 degrees at ignition time, warming to into the lower 90s during the afternoon. Minimum relative humidity between 25 and 30 percent this afternoon with south winds 5 to 10 mph. South winds gradually increase late this evening and overnight, becoming 5 to 15 mph. Low chance of gusts up to 20 mph late tonight/early Sunday morning. Overnight relative humidity recovery 60 to 70 percent. A Fire Weather Watch is in effect for Sunday due to stronger winds and very low relative humidity values, potentially leading to rapid fire spread. .REST OF TODAY... Sky/weather.........Sunny (0-10 percent). Max temperature.....Around 91. Min humidity........28 percent. Wind (20 ft)........Light winds becoming southwest around 5 mph late in the afternoon, then becoming light late in the afternoon. Mixing height.......3000 ft AGL. Transport winds.....South 5 to 7 mph. Stability class.....2. TIME (CDT) 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........2 2 3 3 5 4 Weather cov..... Weather type.... Tstm cov........ Temp............81 85 88 90 91 91 RH..............43 37 34 31 29 28 20 FT wind dir..S S SW SW SW S 20 FT wind spd..3 3 3 3 4 3 20 FT wind gust.6 6 7 7 7 7 Mix hgt (kft)...1.6 1.9 2.3 2.9 3.0 2.8 Transp wind dir.S S S S S S Transp wind spd.6 5 5 5 7 7 .TONIGHT... Sky/weather.........Mostly clear (5-15 percent). Min temperature.....Around 65. Max humidity........63 percent. Wind (20 ft)........Light winds becoming south 5 to 7 mph early in the evening. Mixing height.......400 ft AGL. Transport winds.....South 7 to 16 mph. Stability class.....5. TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky (%).........4 4 4 3 2 6 5 6 4 3 5 15 Weather cov..... Weather type.... Tstm cov........ Temp............90 88 84 79 77 75 74 71 70 70 69 68 RH..............28 31 36 44 47 50 53 57 59 59 61 63 20 FT wind dir..S S S S S S S S S S S S 20 FT wind spd..3 3 4 4 4 5 5 5 5 6 6 6 20 FT wind gust.6 6 7 7 8 8 10 10 10 11 12 12 Mix hgt (kft)...2.3 0.6 0.5 0.4 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 Transp wind dir.S S S S S S S S S S S S Transp wind spd.7 9 10 12 14 14 15 15 15 16 16 16 $$ Forecaster...M.RADA Requested by...Terry Guerrero Type of request...PRESCRIBED .TAG 2606936.0/TSA .DELDT 03/21/26 .FormatterVersion 2.0.0 .EMAIL goodwarrior.tg@gmail.com