343 FNUS75 KBOU 302250 FWSBOU Spot Forecast for Tramway...USFS National Weather Service Denver/Boulder CO 450 PM MDT Fri May 30 2025 If conditions become unrepresentative...contact the National Weather Service. .DISCUSSION...Scattered showers and thunderstorms will continue through this evening. With the strongest storms, variable outflow winds could gust up to 35 mph. It will be warm and relatively moist tomorrow, with temperatures reaching up to the low 70s and relative humidity values ranging between 40-70% throughout the day. There will light variable winds between 5-10 mph throughout the day. The only exception of stronger winds would be with any strong convective storms that could form after 3 PM which could produce gusts up to 30 mph. .TONIGHT... Sky/weather.........Mostly cloudy (60-70 percent) until 2200, then partly cloudy (25-35 percent). Chance of rain showers and thunderstorms until 2100. Slight chance of rain showers after 1900 until 2200. CWR.................20 percent decreasing to 10 percent in the late evening and overnight. Chance of pcpn......40 percent. Chance of thunder...25 percent. Min temperature.....Around 45. Max humidity........76 percent. Wind (20 ft)........North winds 5 to 7 mph until 2000, then variable up to 5 mph until 2400, then west around 5 mph until 0400, then variable up to 5 mph until 0500, then west around 5 mph. Gusty and erratic winds expected near thunderstorms until 2100. Mixing height.......3200 ft AGL until 2000, then 1300 ft AGL. Transport winds.....Northeast around 10 mph until 1900, then around 8 mph until 2100, then light until 2300, then west 8 to 9 mph until 0100, then 8 to 10 mph until 0300, then 8 to 9 mph until 0500, then light. Smoke dispersal.....Poor. TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky (%).........77 68 58 53 45 45 25 19 17 14 14 11 Weather cov.....CHC SCH SCH SCH Weather type....RW RW RW RW Tstm cov........CHC SCH SCH CWR.............20 10 10 10 10 10 0 0 0 0 0 0 Chc of pcpn (%).40 20 20 20 10 10 0 0 0 0 0 0 Chc of thdr (%).30 20 20 10 10 10 0 0 0 0 0 0 Temp............61 59 56 54 52 50 49 49 48 47 47 46 RH..............53 57 64 66 69 71 71 71 71 71 71 71 20 FT wind dir..N N N NW W W W W W W W W 20 FT wind spd..6 5 3 2 3 3 3 3 3 3 3 5 20 FT wind gust.9 7 6 3 6 6 6 6 6 6 6 7 Mix hgt (kft)...4.2 3.2 2.2 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.4 Transp wind dir.NE NE N NE NW W W W W W NW N Transp wind spd.10 6 5 5 5 6 6 7 7 7 6 6 Vrate kt-ft/1K..38 16 9 5 5 7 7 8 8 8 7 7 SmokeDispersion.P P P P P P P P P P P P .SATURDAY... Sky/weather.........Mostly sunny (10-20 percent) until 1200, then mostly cloudy (50-60 percent). Slight chance of rain showers and thunderstorms after 1300 until 1900. CWR.................9 percent increasing to 15 percent in the afternoon. Chance of pcpn......30 percent. Chance of thunder...34 percent. Max temperature.....Around 71. Min humidity........41 percent. Wind (20 ft)........West winds around 5 mph until 0700, then variable up to 5 mph until 1100, then northeast 5 to 8 mph. Gusty and erratic winds expected near thunderstorms after 1300. Mixing height.......2900 ft AGL until 0900. 6300 ft AGL after 1200. Transport winds.....Northwest around 8 mph until 0800, then light until 1000, then northwest 8 to 11 mph until 1200, then north 8 to 13 mph until 1400, then northeast 8 to 12 mph. Smoke dispersal.....Poor until 1000, then fair until 1200, then good until 1400, then fair until 1700, then poor. TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........16 19 9 12 14 24 56 56 56 56 56 56 Weather cov..... SCH SCH CHC CHC CHC Weather type.... RW RW RW RW RW Tstm cov........ SCH SCH CHC CHC CHC CWR.............0 0 0 0 0 0 10 10 10 10 10 20 Chc of pcpn (%).0 0 0 0 0 10 10 20 20 30 30 30 Chc of thdr (%).0 0 0 0 0 10 10 20 20 30 30 30 Temp............45 47 51 56 61 64 67 69 70 70 70 68 RH..............76 76 74 66 53 48 43 42 41 42 42 47 20 FT wind dir..W W NE E NE NE NE E E E E E 20 FT wind spd..5 2 2 2 3 5 6 7 7 8 8 7 20 FT wind gust.7 3 3 3 6 7 9 12 12 13 13 12 Mix hgt (kft)...1.4 2.3 3.4 4.5 5.7 6.9 8.0 7.4 6.7 6.1 5.3 4.6 Transp wind dir.NW NW NW W W NW N N NE E E NE Transp wind spd.5 5 5 6 8 9 9 12 9 9 10 8 Vrate kt-ft/1K..6 9 14 23 40 55 64 74 54 48 48 32 SmokeDispersion.P P P P F F G G F F F P $$ Forecaster...Ideker Requested by...Burn Boss (T) Type of request...PRESCRIBED .TAG 2514476.2/BOU .DELDT 05/30/25 .FormatterVersion 2.0.0 .EMAIL justin.mcarthur@usda.gov