135 FNUS75 KBOU 122138 FWSBOU Spot Forecast for MBRTB Piles, Old Park...USFS National Weather Service Denver/Boulder CO 238 PM MST Tue Nov 12 2024 If conditions become unrepresentative...contact the National Weather Service. Gusty winds will be the main concern this afternoon through midnight as scattered showers push eastward. Additional snowfall of 1-3 inches could occur at the burn area. Westerly winds increase this evening at 13-17 mph with gusts up to 26 mph. Snow and gusty westerly winds will continue overnight until early Wednesday morning. Wednesday, winds shift southwest but remain light between 5-10 mph during the late morning hours through the evening. No hazardous weather expected Wednesday thus expect mostly sunny skies. Minimum relative humidities drop between 55-60 percent. Smoke dispersal conditions are poor during the entire forecast period. .REST OF TODAY... Sky/weather.........Mostly cloudy (70-80 percent). Chance of snow until 1600, then snow likely. CWR.................25 percent increasing to 45 percent late in the afternoon. Chance of pcpn......70 percent. LAL.................1. Max temperature.....Around 38. Min humidity........54 percent. Wind (20 ft)........West winds 10 to 15 mph. Gusts up to 23 mph late in the afternoon. Mixing height.......2500 ft AGL. Transport winds.....West 12 to 18 mph. Smoke dispersal.....Fair until 1600. Poor after 1700. Haines Index........3 or very low potential for large plume dominated fire growth. TIME (MST) 3PM 4PM 5PM Sky (%).........66 74 82 Weather cov.....CHC LKY LKY Weather type....SN SN SN Tstm cov........ CWR.............30 30 50 Chc of pcpn (%).50 60 70 LAL.............1 1 1 Temp............34 32 28 RH..............61 63 75 20 FT wind dir..W W W 20 FT wind spd..14 14 10 20 FT wind gust.16 16 23 Mix hgt (kft)...3.0 2.1 1.0 Transp wind dir.SW W W Transp wind spd.18 15 12 Haines index....3 3 3 Vrate kt-ft/1K..49 27 10 SmokeDispersion.F P P .TONIGHT... Sky/weather.........Mostly cloudy (70-80 percent) until 0500, then partly cloudy (40-50 percent). Snow until 2400, then chance of snow. CWR.................47 percent decreasing to 9 percent late in the evening. Chance of pcpn......90 percent. LAL.................1. Min temperature.....Around 18. Max humidity........85 percent. Wind (20 ft)........West winds 7 to 14 mph. Gusts up to 26 mph in the evening and overnight. Mixing height.......1300 ft AGL until 1900, then Below 1000 FT AGL. Transport winds.....West 12 to 18 mph. Smoke dispersal.....Poor. Haines Index........3 or very low potential for large plume dominated fire growth. TIME (MST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky (%).........90 90 89 88 79 72 79 72 67 58 55 47 Weather cov.....DEF DEF DEF DEF LKY CHC CHC CHC CHC CHC SCH Weather type....SN SN SN SN SN SN SN SN SN SN SN Tstm cov........ CWR.............50 50 50 50 40 10 10 10 10 10 10 0 Chc of pcpn (%).90 80 80 80 70 50 40 40 40 40 20 0 LAL.............1 1 1 1 1 1 1 1 1 1 1 1 Temp............27 26 27 26 25 25 25 24 24 21 21 21 RH..............85 83 82 81 80 76 79 78 71 80 79 74 20 FT wind dir..W W W W W W W W W W W W 20 FT wind spd..14 14 13 13 13 10 10 12 8 8 8 7 20 FT wind gust.24 25 26 26 26 25 24 22 20 17 15 15 Mix hgt (kft)...1.3 0.7 0.8 0.9 0.8 0.9 0.8 0.7 0.7 0.7 0.7 0.7 Transp wind dir.W W W W W W NW W W W W W Transp wind spd.14 16 18 18 17 16 15 15 13 12 13 12 Haines index....3 3 3 3 3 3 3 3 3 3 3 3 Vrate kt-ft/1K..13 10 13 14 13 13 11 9 8 7 8 7 SmokeDispersion.P P P P P P P P P P P P .WEDNESDAY... Sky/weather.........Partly cloudy (35-45 percent) until 0800, then mostly sunny (10-20 percent). CWR.................1 percent. Chance of pcpn......0 percent. LAL.................1. Max temperature.....Around 35. Min humidity........55 percent. Wind (20 ft)........Southwest winds 5 to 7 mph until 0800, then 5 to 6 mph. Mixing height.......Below 1000 FT AGL until 0800, then 2000 ft AGL until 1600, then Below 1000 FT AGL. Transport winds.....West 8 to 12 mph until 1600, then light until 1700, then southwest around 8 mph. Smoke dispersal.....Poor. Haines Index........2 or very low potential for large plume dominated fire growth. TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........44 36 21 20 16 15 9 11 19 20 17 22 Weather cov..... Weather type.... Tstm cov........ CWR.............0 0 0 0 0 0 0 0 0 0 0 0 Chc of pcpn (%).0 0 0 0 0 0 0 0 0 0 0 0 LAL.............1 1 1 1 1 1 1 1 1 1 1 1 Temp............19 21 22 25 27 30 32 34 35 33 33 29 RH..............80 78 79 73 71 66 60 57 57 55 57 59 20 FT wind dir..SW SW SW SW SW S SW SW SW SW SW SW 20 FT wind spd..6 5 3 3 5 5 5 5 5 5 5 5 20 FT wind gust.14 13 13 13 13 14 15 16 17 16 15 7 Mix hgt (kft)...0.7 0.8 1.2 1.5 1.8 2.0 2.0 2.0 2.0 1.5 0.8 0.6 Transp wind dir.W W W W W SW SW SW SW SW SW SW Transp wind spd.9 8 8 8 10 9 9 9 8 9 7 8 Haines index....2 2 2 2 2 2 2 2 2 2 2 2 Vrate kt-ft/1K..6 5 8 10 16 16 16 16 14 12 5 4 SmokeDispersion.P P P P P P P P P P P P $$ Forecaster...AD Requested by...Chris Green Type of request...PRESCRIBED .TAG 2426352.0/BOU .DELDT 11/12/24 .FormatterVersion 2.0.0 .EMAIL christopher.e.green@usda.gov