645 FNUS75 KBOU 061054 FWSBOU Spot Forecast for Hatch Burn Piles...USFS National Weather Service Denver/Boulder CO 354 AM MST Tue Feb 6 2024 If conditions become unrepresentative...contact the National Weather Service. .DISCUSSION...Smoke dispersal will be poor until 1200, then expect good conditions from 1200 to 1600. Poor dispersal will redevelop after 1700. Otherwise it will be mostly cloudy with south winds of 10-15 mph with gusts up to 22 mph by 1300. .REST OF TODAY... Sky/weather.........Mostly cloudy. CWR.................0 percent. Chance of pcpn......0 percent. LAL.................1. Max temperature.....Around 52. Min humidity........32%. Wind (20 ft)........South winds 10-15 mph. Gusts up to 22 mph by 1300. Mixing height.......Below 1000 FT AGL until 1000, then 2600 ft AGL until 1300, then 4800 ft AGL until 1600, then 2300 ft AGL until 1700, then Below 1000 FT AGL. Transport winds.....Southwest 12-18 mph until 1200, then 21-26 mph until 1700, then south around 16 mph. Smoke dispersal.....Poor until 1200, then good until 1300, then very good until 1500, then good until 1600, then fair until 1700, then poor. Haines Index........5 or moderate potential for large plume dominated fire growth. TIME (MST) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........72 72 72 71 71 71 70 70 68 67 65 Weather cov..... Weather type.... Tstm cov........ CWR.............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 LAL.............1 1 1 1 1 1 1 1 1 1 1 Temp............33 34 37 41 46 50 52 52 52 50 46 RH..............50 49 48 46 40 34 34 34 32 36 44 20 FT wind dir..S S S S S S SW SW SW S S 20 FT wind spd..10 10 10 10 12 13 14 15 15 14 13 20 FT wind gust.16 16 16 15 16 16 21 21 18 18 22 Mix hgt (kft)...0.5 0.5 0.6 1.0 2.0 3.1 5.0 5.2 3.3 2.3 0.8 Transp wind dir.SW S S S SW SW SW SW S SW S Transp wind spd.15 13 12 14 18 25 26 25 22 21 16 Haines index....5 5 5 5 5 5 5 5 5 5 5 Vrate kt-ft/1K..7 6 7 12 31 69 115 114 63 41 9 SmokeDispersion.P P P P P G VG VG G F P .TONIGHT... Sky/weather.........Mostly cloudy(50-60%) until 1900, then partly cloudy(35-45%). Slight chance of snow after 0500. CWR.................1 percent. Chance of pcpn......20 percent. LAL.................1. Min temperature.....Around 30. Max humidity........77%. Wind (20 ft)........South winds 13-19 mph with gusts to around 38 mph. Mixing height.......Below 1000 FT AGL until 0100, then 1000 ft AGL until 0300, then Below 1000 FT AGL. Transport winds.....Southwest 14-23 mph until 2400, then 21-26 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 (%).........56 47 38 37 37 36 35 34 33 33 32 32 Weather cov..... SCH Weather type.... SN 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 20 LAL.............1 1 1 1 1 1 1 1 1 1 1 1 Temp............43 40 38 37 36 36 35 35 34 34 33 32 RH..............44 48 51 56 58 62 65 62 64 64 66 68 20 FT wind dir..S S S S S S SW SW SW SW SW S 20 FT wind spd..13 14 15 16 17 18 18 18 18 18 17 16 20 FT wind gust.22 22 23 26 31 35 37 38 38 37 36 25 Mix hgt (kft)...0.7 0.7 0.7 0.7 0.7 0.8 0.9 1.0 1.0 0.9 0.8 0.7 Transp wind dir.S S S SW SW SW SW SW SW SW SW SW Transp wind spd.14 15 16 18 21 23 24 25 25 25 25 21 Haines index....3 3 3 3 3 3 3 3 3 3 3 3 Vrate kt-ft/1K..9 9 9 11 13 16 18 21 22 21 18 12 SmokeDispersion.P P P P P P P P P P P P .WEDNESDAY... Sky/weather.........Partly cloudy(30-40%) until 1000, then mostly cloudy(50-60%). Chance of rain and snow. CWR.................6 percent. Chance of pcpn......40 percent. LAL.................1. Max temperature.....Around 50. Min humidity........30%. Wind (20 ft)........Southwest winds 12-18 mph until 1100, then 13-17 mph. Gusts up to 25 mph. Mixing height.......Below 1000 FT AGL until 0900, then 4500 ft AGL until 1700, then 1600 ft AGL. Transport winds.....Southwest 16-23 mph. Smoke dispersal.....Poor until 1000, then fair until 1100, then good until 1400, then very good until 1500, then good until 1600, then fair until 1700, then poor. Haines Index........4 or low potential for large plume dominated fire growth. TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........31 30 37 30 52 57 57 57 57 57 58 58 Weather cov.....SCH SCH SCH SCH SCH CHC CHC CHC CHC CHC CHC SCH Weather type....SN SN SN RS RS RS RN RN RN SN SN SN Tstm cov........ CWR.............10 10 10 10 10 10 10 10 10 10 10 10 Chc of pcpn (%).20 20 20 20 20 40 40 40 40 40 40 20 LAL.............1 1 1 1 1 1 1 1 1 1 1 1 Temp............31 30 32 37 40 44 48 49 50 49 46 43 RH..............73 77 72 62 54 44 38 32 31 30 32 35 20 FT wind dir..S S SW SW SW SW SW SW SW SW SW SW 20 FT wind spd..16 16 15 14 14 14 14 15 15 15 15 14 20 FT wind gust.25 25 24 22 22 22 22 24 24 24 24 22 Mix hgt (kft)...0.7 0.6 0.8 2.0 2.8 3.7 4.3 4.9 5.5 4.2 2.9 1.6 Transp wind dir.SW SW SW SW SW SW SW SW SW SW SW SW Transp wind spd.18 18 18 23 22 20 21 21 22 20 18 16 Haines index....4 4 4 4 4 4 4 4 4 4 4 4 Vrate kt-ft/1K..11 10 13 39 53 63 76 90 105 73 46 23 SmokeDispersion.P P P P F G G G VG G F P $$ Forecaster...RPK Requested by...John Knudsen Type of request...PRESCRIBED .TAG 2402359.0/BOU .DELDT 02/06/24 .FormatterVersion 1.0.26 .EMAIL john.knudsen@usda.gov