441 FNUS73 KABR 141345 FWSABR Spot Forecast for BEAR CREEK RX...SD-CRA National Weather Service Aberdeen SD 845 AM CDT Tue Sep 14 2021 Forecast is based on a starting time of 0800 MDT on September 14. If conditions become unrepresentative...contact the National Weather Service in Aberdeen SD. .DISCUSSION...The burn site is dominated by an area of surface high pressure building into the region from the northwest. Plenty of sunshine is expected today. A rather light surface wind, variable between approximately 280 degrees and 340 degrees will eventually settle down this morning out of the north-northwest around 5 to 10 mph. Between noon and about 5 pm CDT, daytime boundary layer mixing could start to draw down some occasional gusts of 15 to 20 mph. By late this afternoon, the wind direction will begin to shift around to more of a light southerly wind, likely settling on a southeast direction by 7 or 8 pm CDT this evening. .REST OF TODAY... Sky/weather.........Sunny (20-30 percent cloud). CWR.................0 percent. LAL.................1. Max temperature.....72-77. Min humidity........33-38 percent. Wind (20 ft)........North winds around 6 mph shifting to the west late in the afternoon. Mixing height.......6400-7400 ft agl. Transport winds.....North 3 to 8 mph shifting to the west late in the afternoon. Smoke dispersal.....Poor (2200-39700). Haines Index........4 to 5 or (low) to (moderate). TIME (MDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM Sky (%).........24 23 21 20 18 21 23 25 27 Weather cov..... Weather type.... Tstm cov........ Temp............55 57 61 65 69 72 73 74 74 RH..............77 69 58 48 42 38 37 35 37 20 FT wind dir..NW N N N N N NW W SW 20 FT wind spd..5 6 6 6 6 6 6 6 6 20 FT wind gust. 14 13 12 12 14 15 16 15 .TONIGHT... Sky/weather.........Mostly clear (20-30 percent cloud). CWR.................0 percent. LAL.................1. Min temperature.....51-56. Max humidity........91-96 percent. Wind (20 ft)........South winds 6 to 12 mph. Gusts up to 20 mph overnight. Mixing height.......500-1500 ft agl. Transport winds.....West 4 to 9 mph shifting to the south 3 to 9 mph early in the evening, then increasing to 11 to 16 mph late in the evening shifting to the southeast 6 to 14 mph after 3 am. Smoke dispersal.....Poor (1900-27900). Haines Index........5 or (moderate). TIME (MDT) 5PM 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM Sky (%).........30 32 29 26 23 21 18 15 15 16 16 17 Weather cov..... Weather type.... Tstm cov........ Temp............73 71 67 63 60 58 57 57 56 56 55 54 RH..............38 42 50 58 67 75 77 80 83 83 90 93 20 FT wind dir..SW S S S S S S S S S S S 20 FT wind spd..6 6 7 7 8 9 9 10 10 12 12 12 20 FT wind gust.14 13 13 15 18 18 17 20 17 17 15 18 .WEDNESDAY... Sky/weather.........Sunny (10-20 percent cloud). CWR.................0 percent. LAL.................1. Max temperature.....82-87. Min humidity........32-37 percent. Wind (20 ft)........South winds 10 to 14 mph. Gusts up to 21 mph early in the morning then 25 mph early in the morning. Mixing height.......4200-5200 ft agl. Transport winds.....South 12 to 20 mph. Smoke dispersal.....Poor (5000-89700). Haines Index........5 to 6 or (moderate) to (high). TIME (MDT) 5AM 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM Sky (%).........17 18 17 16 15 14 12 11 13 15 17 18 Weather cov..... Weather type.... Tstm cov........ Temp............53 54 56 59 64 68 73 77 80 82 84 84 RH..............96 93 90 83 70 63 55 48 44 40 36 34 20 FT wind dir..S S S S S S S S S S S S 20 FT wind spd..12 12 12 13 13 14 14 14 14 13 12 10 20 FT wind gust.21 17 20 22 24 25 25 25 25 24 23 21 $$ Forecaster...Dorn Requested by...FUELS SPC. Type of request...PRESCRIBED .TAG 2118330.0/ABR .DELDT 09/14/21 .FormatterVersion 1.0.26 .EMAIL LELAND.BLACK@BIA.GOV