475 FNUS75 KBOU 111240 FWSBOU Spot Forecast for Allenspark Boundary Piles...NPS National Weather Service Denver/Boulder CO 540 AM MST Wed Jan 11 2023 If conditions become unrepresentative...contact the National Weather Service. .DISCUSSION...A weak weather system will bring westerly winds today along with light snow showers. There will be better mixing today along with the wind. For Thursday, mixing depth will be limited, but there should be enough wind for fair smoke dispersal for several hours in the afternoon. Friday and Saturday will be warmer, and though there will be less wind, fair dispersal is likely in the afternoon hours. More cloud cover may limit dispersal on Sunday. Light snow is likely Sunday, especially in the afternoon. .TODAY... Sky/weather.........Mostly cloudy. Snow likely. CWR.................20 percent decreasing to 12 percent late in the morning. LAL.................1. Max temperature.....Around 34. Min humidity........44%. Wind (20 ft)........Breezy. West winds 13-19 mph until 0800, then 23-29 mph. Gusts up to 44 mph. Mixing height.......2400 ft AGL. Transport winds.....West 25 mph increasing to 40 mph. Smoke dispersal.....Poor until 0800, then fair until 1000, then good until 1200, then very good until 1400, then good. Haines Index........3 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 (%).........80 81 82 82 82 82 82 82 81 81 81 74 Weather cov.....LKY LKY LKY LKY LKY LKY LKY LKY LKY LKY LKY CHC Weather type....SN SN SN SN SN SN SN SN SN SN SN SN Tstm cov........ CWR.............20 20 20 20 20 10 10 10 10 10 10 10 LAL.............1 1 1 1 1 1 1 1 1 1 1 1 Temp............30 30 28 33 33 33 34 33 32 31 28 22 RH..............56 50 53 44 45 45 44 46 45 45 48 58 20 FT wind dir..W W W W W W W W W W W W 20 FT wind spd..14 18 23 24 24 24 25 26 28 28 28 26 20 FT wind gust.28 33 40 43 43 40 43 43 44 44 44 38 Mix hgt (kft)...1.1 1.2 1.4 1.7 2.0 2.4 2.8 2.8 2.6 2.3 1.8 1.1 Transp wind dir.W W W W W W W W W W W W Transp wind spd.25 29 36 40 43 44 44 44 44 44 43 26 Haines index....3 3 3 3 3 3 3 3 3 3 3 3 Vrate kt-ft/1K..24 31 43 59 76 92 106 108 100 87 66 25 SmokeDispersion.P P F F G G VG VG G G G P .TONIGHT... Sky/weather.........Mostly cloudy until 1900, then partly cloudy(40-50%). Chance of snow until 2300. CWR.................12 percent decreasing to 0 percent early in the morning. LAL.................1. Min temperature.....Around 18. Max humidity........63%. Wind (20 ft)........West winds 19-25 mph with gusts to around 38 mph. Mixing height.......1000 ft AGL until 2300, then Below 1000 FT AGL. Transport winds.....West 22-27 mph. Smoke dispersal.....Poor. Haines Index........2 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 (%).........67 59 55 55 55 43 41 40 38 36 35 30 Weather cov.....CHC CHC CHC CHC CHC PTY PTY PTY PTY Weather type....SN SN SN SN SN BSN BSN BSN BSN Tstm cov........ CWR.............10 10 10 10 10 10 10 10 0 0 0 0 LAL.............1 1 1 1 1 1 1 1 1 1 1 1 Temp............22 22 22 20 19 19 19 23 23 23 24 24 RH..............60 60 60 61 63 60 62 50 50 50 47 47 20 FT wind dir..W W W W W W W W W W W W 20 FT wind spd..24 22 21 21 21 21 20 20 20 21 22 24 20 FT wind gust.38 37 37 37 33 35 35 35 35 35 35 37 Mix hgt (kft)...1.1 1.2 1.2 1.1 1.0 0.9 0.8 0.8 0.7 0.7 0.7 0.6 Transp wind dir.W W W W W W W W W W W W Transp wind spd.25 24 24 24 23 23 24 24 24 23 23 24 Haines index....2 2 2 2 2 2 2 2 2 2 2 2 Vrate kt-ft/1K..25 24 24 23 20 18 17 16 15 14 14 13 SmokeDispersion.P P P P P P P P P P P P .THURSDAY... Sky/weather.........Mostly sunny. CWR.................0 percent. LAL.................1. Max temperature.....Around 37. Min humidity........33%. Wind (20 ft)........Breezy. West winds 22-28 mph with gusts to around 40 mph. Mixing height.......1000 FT AGL until 0900, then rising to 2500 ft AGL by 1200. Transport winds.....West 23-28 mph. Smoke dispersal.....Poor until 1100, then fair. 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 (%).........28 28 24 17 14 5 5 4 4 11 12 22 Weather cov..... Weather type.... Tstm cov........ CWR.............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............24 24 24 27 30 32 35 36 36 33 29 24 RH..............45 45 45 42 41 39 35 33 33 38 42 50 20 FT wind dir..W W W W W W W W W W W W 20 FT wind spd..24 23 24 24 24 25 26 26 26 26 26 24 20 FT wind gust.37 35 37 37 37 38 40 40 40 40 40 36 Mix hgt (kft)...0.6 0.5 0.6 0.8 1.3 1.7 1.8 2.2 2.2 2.1 1.3 1.1 Transp wind dir.W W W W W W W W W W W W Transp wind spd.24 24 24 25 25 26 26 26 26 26 26 26 Haines index....2 2 2 2 2 2 2 2 2 2 2 2 Vrate kt-ft/1K..12 12 13 18 33 44 47 57 57 55 34 29 SmokeDispersion.P P P P P F F F F F P P .FORECAST DAYS 3 THROUGH 5... .FRIDAY... Not as cool. Partly cloudy. Lows in the lower 20s. Highs in the upper 40s. West winds 16-24 mph. .SATURDAY... Breezy. Partly cloudy. Lows in the upper 20s. Highs in the mid 40s. West winds 18-28 mph. .SUNDAY... Mostly cloudy. Snow likely. Lows in the mid 20s. Highs in the upper 30s. West winds 15-21 mph. $$ Forecaster...Gimmestad Requested by...Aaron Klee Type of request...PRESCRIBED .TAG 2300333.0/BOU .DELDT 01/11/23 .FormatterVersion 1.0.26 .EMAIL AKlee.nps@gmail.com