Spot Forecast
Issued by NWS Denver/Boulder, CO
Issued by NWS Denver/Boulder, CO
786 FNUS75 KBOU 040911 FWSBOU Spot Forecast for Forsythe II Rx - Unit 44...USFS National Weather Service Denver/Boulder CO 311 AM MDT Sat May 4 2024 If conditions become unrepresentative...contact the National Weather Service. Today, there is a slight chance of an isolated rain shower this afternoon. If a shower arrives near the burn area, expect wind gusts up to 35 mph. Southerly winds should shift southeast mid-day between 6-10 mph. Smoke dispersal remains poor today through tonight. Sunday, southerly winds shift southwest early afternoon. Wind speeds will likely increase Sunday afternoon and evening gusting up to 30-40 mph. Humidities continue above 25 percent through the entire forecast period. Smoke dispersal improves Sunday afternoon from good to excellent. .REST OF TODAY... Sky/weather.........Partly cloudy (30-40 percent) until 1400, then mostly cloudy (50-60 percent). Slight chance of rain showers after 1200 until 1400, then chance of rain showers. Slight chance of thunderstorms after 1500. CWR.................7 percent. Chance of pcpn......30 percent. LAL.................1 until 1500, then 3. Max temperature.....Around 55. Min humidity........43 percent. Wind (20 ft)........Variable up to 5 mph until 0800, then southeast 5 to 8 mph. Gusty and erratic winds expected near thunderstorms after 1500. Mixing height.......3900 ft AGL. Transport winds.....North around 9 mph until 0800, then south 8 to 13 mph. Smoke dispersal.....Poor. Haines Index........3 or very low potential for large plume dominated fire growth. TIME (MDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........66 62 53 41 25 31 40 51 55 55 56 Weather cov..... SCH SCH CHC CHC CHC CHC Weather type.... RW RW RW RW RW RW Tstm cov........ SCH SCH SCH CWR.............0 0 0 0 0 10 10 10 10 10 10 Chc of pcpn (%).0 0 0 10 10 20 20 30 30 30 30 LAL.............1 1 1 1 1 1 1 1 3 3 3 Temp............30 32 34 39 43 46 49 51 52 54 51 RH..............87 86 78 67 60 53 49 46 44 43 48 20 FT wind dir..SE SE SE SE E E E E E SE SE 20 FT wind spd..2 5 6 5 6 6 7 7 7 7 6 20 FT wind gust.3 7 9 7 9 9 12 12 12 12 9 Mix hgt (kft)...1.6 1.6 1.6 1.9 2.5 2.9 3.3 3.5 4.0 3.9 3.9 Transp wind dir.N S S S S S S SE S SE SE Transp wind spd.9 9 10 10 12 10 12 10 10 9 9 Haines index....3 3 3 3 3 3 3 3 3 3 3 Vrate kt-ft/1K..13 13 14 17 25 26 33 31 36 31 31 SmokeDispersion.P P P P P P P P P P P .TONIGHT... Sky/weather.........Mostly cloudy (55-65 percent) until 2200, then partly cloudy (25-35 percent). Chance of rain showers until 2000. Slight chance of thunderstorms until 2100. Slight chance of rain showers after 2000 until 2300. CWR.................15 percent decreasing to 5 percent late in the evening. Chance of pcpn......30 percent. LAL.................3 until 2100, then 1. Min temperature.....Around 37. Max humidity........77 percent. Wind (20 ft)........South winds 5 to 8 mph until 2000. Southwest 5 to 13 mph after 2400. Gusty and erratic winds expected near thunderstorms until 2100. Mixing height.......1400 ft AGL until 2000, then Below 1000 FT AGL. Transport winds.....South 8 to 13 mph until 2100, then southwest 12 to 17 mph. Smoke dispersal.....Poor. Haines Index........4 or low potential for large plume dominated fire growth. TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky (%).........65 66 62 52 46 38 26 20 17 17 17 16 Weather cov.....CHC CHC SCH SCH SCH Weather type....RW RW RW RW RW Tstm cov........SCH SCH SCH CWR.............20 10 10 10 10 10 0 0 0 0 0 0 Chc of pcpn (%).30 30 20 20 20 10 0 0 0 0 0 0 LAL.............3 3 3 1 1 1 1 1 1 1 1 1 Temp............49 48 44 42 41 40 40 40 39 39 39 38 RH..............53 55 68 77 77 71 72 72 72 70 68 67 20 FT wind dir..S S S SW SW SW SW SW SW SW SW SW 20 FT wind spd..6 7 7 8 7 7 8 7 8 7 7 8 20 FT wind gust.9 12 12 13 12 12 13 12 13 12 12 13 Mix hgt (kft)...2.5 1.2 0.7 0.5 0.5 0.5 0.6 0.6 0.5 0.6 0.5 0.6 Transp wind dir.S S S SW SW SW SW SW SW SW SW SW Transp wind spd.9 12 12 13 13 13 15 15 14 14 14 15 Haines index....4 4 4 4 4 4 4 4 4 4 4 4 Vrate kt-ft/1K..20 12 7 6 6 6 7 7 7 7 7 7 SmokeDispersion.P P P P P P P P P P P P .SUNDAY... Sky/weather.........Mostly sunny (15-25 percent) until 0700, then partly cloudy (35-45 percent) until 0900, then mostly cloudy (70-80 percent). CWR.................4 percent. Chance of pcpn......10 percent. LAL.................1. Max temperature.....Around 66. Min humidity........25 percent. Wind (20 ft)........Southwest winds 5 to 12 mph until 0900, then south 8 to 16 mph with gusts to around 28 mph. Gusty and erratic winds expected near thunderstorms after 1200. Mixing height.......Below 1000 FT AGL until 0700, then 2400 ft AGL until 1100, then 4900 ft AGL until 1300, then 7900 ft AGL until 1500, then 9700 ft AGL until 1700, then 7200 ft AGL. Transport winds.....Southwest 12 to 20 mph until 1300, then 22 to 28 mph. Smoke dispersal.....Poor until 1100, then fair until 1200, then good until 1300, then very good until 1400, then excellent. Haines Index........5 or moderate potential for large plume dominated fire growth. TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........21 34 47 59 74 73 89 81 78 70 70 68 Weather cov..... SCH SCH SCH SCH SCH SCH Weather type.... RW RW RW RW RW RW Tstm cov........ SCH SCH SCH SCH SCH SCH CWR.............0 0 0 0 0 0 0 0 0 0 0 0 Chc of pcpn (%).0 0 0 0 0 0 10 10 10 10 10 10 LAL.............1 1 1 1 1 1 2 2 2 2 2 2 Temp............38 42 46 51 54 57 59 62 64 66 66 65 RH..............67 60 55 48 43 38 36 31 28 25 25 26 20 FT wind dir..SW SW SW SW S S S S S S S S 20 FT wind spd..7 7 7 8 9 12 13 14 15 16 16 15 20 FT wind gust.12 12 9 9 12 15 21 22 25 28 28 25 Mix hgt (kft)...0.6 1.0 1.4 1.8 2.8 3.9 4.9 6.6 8.2 9.9 8.5 7.2 Transp wind dir.SW SW S S S SW SW SW SW SW SW SW Transp wind spd.13 13 12 12 14 17 20 22 25 28 26 24 Haines index....5 5 5 5 5 5 5 5 5 5 5 5 Vrate kt-ft/1K..6 10 14 18 35 57 83 127 179 238 194 153 SmokeDispersion.P P P P P F G VG E E E E $$ Forecaster...AD Requested by...Luke Finn Type of request...PRESCRIBED .TAG 2412828.3/BOU .DELDT 05/04/24 .FormatterVersion 2.0.0 .EMAIL luke.finn@usda.gov