Spot Forecast
Issued by NWS Denver/Boulder, CO
Issued by NWS Denver/Boulder, CO
269 FNUS75 KBOU 241225 FWSBOU Spot Forecast for Forsythe II - Unit 44...USFS National Weather Service Denver/Boulder CO 625 AM MDT Fri May 24 2024 If conditions become unrepresentative...contact the National Weather Service. .DISCUSSION...Humidity levels are a bit higher today as a new airmass is in place behind a cold front that moved through last evening. There will be slight chance of late day showers and thunderstorms. There will be a few hours of very good to excellent smoke dispersal this afternoon. .TODAY... Sky/weather.........Mostly sunny (10-20 percent) until 1200, then partly cloudy (35-45 percent) until 1500, then mostly cloudy (55-65 percent). Slight chance of rain showers and thunderstorms after 1500. CWR.................5 percent. Chance of pcpn......20 percent. LAL.................1 until 1500, then 2. Max temperature.....Around 60. Min humidity........20-25 percent. Wind (20 ft)........West to southwest winds 7 to 16 with gusts to 25 mph. Erratic winds expected near thunderstorms after 1500. Mixing height.......Below 1000 FT AGL until 0700. 9000 ft AGL after 1200. Transport winds.....West 15 to 22 mph until 1200, then 22 to 27 mph. Smoke dispersal.....Poor until 0900, then fair until 1000, then good until 1100, then very good until 1200, 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 (%).........20 20 11 11 11 16 27 37 48 65 62 59 Weather cov..... SCH SCH SCH Weather type.... RW RW RW Tstm cov........ SCH SCH SCH CWR.............0 0 0 0 0 0 0 0 0 0 0 10 Chc of pcpn (%).0 0 0 0 10 10 10 10 10 10 10 20 LAL.............1 1 1 1 1 1 1 1 1 2 2 2 Temp............32 34 38 45 48 50 52 55 57 57 58 57 RH..............51 49 42 33 30 28 27 24 22 22 23 25 20 FT wind dir..W W W W SW SW SW SW W W SW SW 20 FT wind spd..9 9 9 7 6 3 6 5 6 7 7 6 20 FT wind gust.16 16 15 12 9 6 9 7 9 12 12 9 Mix hgt (kft)...0.8 1.0 2.0 3.0 4.3 5.7 7.1 7.9 8.7 9.4 9.1 8.0 Transp wind dir.W W W W W W W W W W W W Transp wind spd.16 15 18 20 20 22 25 26 25 24 23 24 Haines index....5 5 5 5 5 5 5 5 5 5 5 5 Vrate kt-ft/1K..11 13 32 51 73 108 156 181 192 198 181 169 SmokeDispersion.P P P F G VG E E E E E E .TONIGHT... Sky/weather.........Mostly cloudy (70-80 percent) until 0300, then partly cloudy (30-40 percent). Slight chance of thunderstorms until 2100. Slight chance of rain showers until 2400. CWR.................5 percent. Chance of pcpn......20 percent. LAL.................3 until 2100, then 1. Min temperature.....Around 40. Max humidity........62 percent. Wind (20 ft)........West winds 6 to 12 mph. Gusty and erratic winds expected near thunderstorms until 2100. Mixing height.......6700 ft AGL until 1900, then 3900 ft AGL until 2000, then 1200 ft AGL until 2100, then Below 1000 FT AGL until 2300, then 1000 ft AGL until 2400, then Below 1000 FT AGL. Transport winds.....West 18 to 23 mph until 2000, then southwest 8 to 13 mph until 0100, then 9 to 14 mph until 0400, then west 14 to 19 mph. Smoke dispersal.....Very good until 1900, then good until 2000, then poor. Haines Index........5 or moderate potential for large plume dominated fire growth. TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky (%).........59 63 71 74 73 83 88 75 57 41 32 29 Weather cov.....SCH SCH SCH SCH SCH SCH Weather type....RW RW RW RW RW RW Tstm cov........SCH SCH SCH CWR.............10 10 10 10 10 10 0 0 0 0 0 0 Chc of pcpn (%).20 20 20 20 20 20 10 10 10 10 10 10 LAL.............3 3 3 1 1 1 1 1 1 1 1 1 Temp............55 53 48 45 44 45 45 44 42 42 41 40 RH..............29 32 42 49 49 49 51 53 57 57 59 62 20 FT wind dir..W W W W W W W W W W W W 20 FT wind spd..12 9 8 7 6 6 6 6 6 7 8 9 20 FT wind gust.18 15 13 12 10 10 10 10 10 12 13 15 Mix hgt (kft)...6.7 3.9 1.2 0.9 0.9 1.0 0.7 0.7 0.7 0.7 0.7 0.7 Transp wind dir.W W W SW SW SW SW S SW SW W W Transp wind spd.23 18 12 9 9 8 8 10 10 12 16 17 Haines index....5 5 5 5 5 5 5 5 5 5 5 5 Vrate kt-ft/1K..134 62 12 7 7 7 5 6 6 7 10 11 SmokeDispersion.VG G P P P P P P P P P P .SATURDAY... Sky/weather.........Partly cloudy (40-50 percent) until 1100, then mostly cloudy (60-70 percent). Chance of rain showers and thunderstorms after 1200. CWR.................3 percent. Chance of pcpn......50 percent. LAL.................1 until 1200, then 4. Max temperature.....Around 64. Min humidity........28 percent. Wind (20 ft)........West winds 9 to 16 mph. Gusts up to 28 mph early in the morning. Gusty and erratic winds expected near thunderstorms after 1200. Mixing height.......Below 1000 FT AGL until 0700, then 3600 ft AGL until 0900, then 7200 ft AGL until 1200, then 10200 ft AGL until 1700, then 6800 ft AGL. Transport winds.....West 21 to 29 mph until 0900, then 23 to 32 mph. Smoke dispersal.....Poor until 0700, then fair until 0800, then good until 0900, then very good until 1000, 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 (%).........40 40 37 36 49 57 69 71 71 72 75 75 Weather cov..... CHC CHC CHC CHC CHC CHC Weather type.... RW RW RW RW RW RW Tstm cov........ CHC CHC CHC CHC CHC CHC CWR.............0 0 0 0 0 0 0 0 0 0 0 0 Chc of pcpn (%).10 10 10 10 10 10 50 50 50 50 50 50 LAL.............1 1 1 1 1 1 4 4 4 4 4 4 Temp............42 44 49 52 55 58 61 62 63 63 62 60 RH..............57 53 44 39 35 33 29 28 29 29 30 33 20 FT wind dir..W W W W W W W W W W W W 20 FT wind spd..9 10 12 13 13 14 15 15 15 16 16 16 20 FT wind gust.16 17 20 21 22 23 24 25 25 26 28 28 Mix hgt (kft)...0.8 2.3 3.8 5.4 6.6 7.9 9.2 9.7 10 11 8.8 6.8 Transp wind dir.W W W W W W W W W W W W Transp wind spd.21 24 29 32 31 29 28 26 24 23 25 26 Haines index....5 5 5 5 5 5 5 5 5 5 5 5 Vrate kt-ft/1K..15 50 95 150 177 201 221 220 217 214 190 160 SmokeDispersion.P F G VG E E E E E E E E $$ Forecaster...RJK Requested by...Luke Finn Type of request...PRESCRIBED .TAG 2414199.7/BOU .DELDT 05/24/24 .FormatterVersion 2.0.0 .EMAIL luke.finn@usda.gov