FNUS75 KBOU 081528 FWSBOU Spot Forecast for Diamond...CONCC National Weather Service Denver/Boulder CO 928 AM MDT Wed Jul 8 2026 If conditions become unrepresentative...contact the National Weather Service. .DISCUSSION... Winds out of the northwest should transition to southwest by midday, but remain under 8-12 mph. There is a 50 percent chance of thunderstorms for this afternoon, especially after 1300. Frequent lightning and wind gusts to 35 mph are expected with any storms, as well as a 10 percent chance of a wetting rain on the plus side. Even without thunderstorms directly overhead, one or more gustfronts are expected to result in a wind shift on the fire this afternoon. The gust fronts will be cooler/more moist but result in a wind shift with gusts to 25-30 mph for an hour or more. Thunderstorm chances drop significantly (below 20%) after 8 PM. Tonight, south winds under 10 mph are expected with RH recovery to 70 percent. On Thursday more of the same, with a 50 percent chance of afternoon thunderstorms with frequent lightning, gusty winds to 35 mph, and a 10-15 percent chance of a wetting rain. .REST OF TODAY... Sky/weather.........Mostly sunny (15-25 percent) until 1100, then partly cloudy (35-45 percent) until 1200, then mostly cloudy (70-80 percent). Chance of showers and thunderstorms after 1200. CWR.................2 percent increasing to 18 percent in the afternoon. Chance of thunder...46 percent. Max temperature.....Around 78. Min humidity........31 percent. Wind (20 ft)........Northwest winds 6 to 11 mph until 1700, then southwest around 8 mph. Gusty and erratic winds expected near thunderstorms after 1200. Mixing height.......4700 ft AGL until 1000, then 9500 ft AGL until 1200, then 11400 ft AGL until 1300, then 7200 ft AGL. Transport winds.....West 14 to 22 mph until 1700, then southwest around 15 mph. Smoke dispersal.....Good until 1000, then very good until 1100, then excellent until 1300, then very good until 1500, then good. TIME (MDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........12 25 38 64 82 67 68 69 71 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 20 20 20 20 20 20 Chc of thdr (%).0 0 10 40 40 40 50 50 40 Temp............68 73 74 76 74 73 75 73 73 RH..............42 35 33 31 33 35 34 35 37 20 FT wind dir..NW NW NW NW W NW W NW SW 20 FT wind spd..9 10 10 9 9 9 9 7 8 20 FT wind gust.15 16 16 16 16 15 15 13 13 Mix hgt (kft)...4.7 7.8 10 11 8.1 7.4 6.3 6.5 5.7 Transp wind dir.W W W W W NW W W SW Transp wind spd.17 22 21 18 18 17 14 14 15 Vrate kt-ft/1K..70 148 183 183 130 110 76 78 75 SmokeDispersion.G VG E E VG VG G G G .TONIGHT... Sky/weather.........Mostly cloudy (55-65 percent) until 2200, then partly cloudy (40-50 percent) until 0300, then mostly cloudy (50-60 percent) until 0500, then partly cloudy (40-50 percent). Chance of rain showers and thunderstorms until 2100, then slight chance of rain showers until 2200. CWR.................7 percent. Chance of thunder...30 percent. Min temperature.....Around 53. Max humidity........69 percent. Wind (20 ft)........South winds 5-9 mph through 0600. Mixing height.......3700 ft AGL until 1900. Below 1000 FT AGL after 2000. Transport winds.....Southwest 9 to 14 mph until 2000, then south 8 to 13 mph until 0200, then southwest 9 to 14 mph. Smoke dispersal.....Fair until 1900, then poor. TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky (%).........65 64 56 51 45 46 42 44 41 54 54 45 Weather cov.....CHC CHC CHC SCH Weather type....RW RW RW RW Tstm cov........CHC CHC CHC CWR.............10 10 10 10 10 0 0 0 0 0 0 0 Chc of thdr (%).30 30 30 10 10 10 0 0 0 0 0 0 Temp............71 69 66 62 60 60 58 58 57 56 57 56 RH..............39 45 52 62 69 67 69 67 69 69 64 64 20 FT wind dir..S SW SE SE S SW SW S SW SW SW SW 20 FT wind spd..8 7 6 7 7 7 6 6 6 6 6 6 20 FT wind gust.13 12 9 12 12 10 9 9 9 8 8 8 Mix hgt (kft)...3.7 2.2 0.6 0.6 0.6 0.6 0.5 0.5 0.6 0.6 0.6 0.6 Transp wind dir.SW SW S S S S S S SW SW W W Transp wind spd.13 10 12 10 10 10 9 8 13 9 10 12 Vrate kt-ft/1K..40 20 6 5 5 5 4 4 6 4 5 6 SmokeDispersion.F P P P P P P P P P P P .THURSDAY... Sky/weather.........Partly cloudy (30-40 percent) until 0800, then mostly sunny (15-25 percent) until 1100, then partly cloudy (25-35 percent) until 1200, then mostly cloudy (60-70 percent). Rain showers likely and chance of thunderstorms after 1200. CWR.................3 percent increasing to 12 percent in the afternoon. Chance of thunder...42 percent. Max temperature.....Around 76. Min humidity........32 percent. Wind (20 ft)........West winds 5 to 7 mph until 0800, then 6 to 11 mph until 1600, then southwest around 8 mph until 1700, then southeast around 7 mph. Gusty and erratic winds expected near thunderstorms after 1200 until 1600. Gusty and erratic winds expected near thunderstorms after 1700. Mixing height.......Below 1000 FT AGL until 0800, then 3300 ft AGL until 1000, then 8000 ft AGL until 1200, then 9900 ft AGL until 1400, then 6100 ft AGL. Transport winds.....West 12 to 21 mph until 1600, then north until 1700, then west around 14 mph. Smoke dispersal.....Poor until 0900, then fair until 1000, then good until 1100, then very good until 1300, then excellent until 1400, then good. TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........33 41 21 21 19 32 59 75 74 61 54 55 Weather cov..... CHC CHC LKY CHC SCH Weather type.... RW RW RW RW RW Tstm cov........ CHC CHC CHC CHC SCH CWR.............0 0 0 0 0 0 10 10 10 10 0 10 Chc of thdr (%).0 0 0 0 0 10 30 40 40 30 0 20 Temp............55 58 63 66 71 72 74 71 71 71 70 70 RH..............64 60 50 45 36 34 32 35 35 36 36 38 20 FT wind dir..W W W W W NW W NW W W SW SE 20 FT wind spd..5 5 7 8 9 9 9 9 7 8 8 7 20 FT wind gust.8 8 10 13 15 15 15 15 13 14 14 13 Mix hgt (kft)...0.6 0.7 1.8 3.8 6.4 8.5 9.9 9.6 5.3 6.1 5.1 5.5 Transp wind dir.W W W W W W W W W W N W Transp wind spd.13 12 14 16 15 15 14 21 17 16 16 14 Vrate kt-ft/1K..6 7 22 53 84 110 119 173 79 86 72 66 SmokeDispersion.P P P F G VG VG E G G G G$$ Forecaster...Schlatter Requested by...CONCC Type of request...WILDFIRE .TAG 2616994.0/BOU .DELDT 07/08/26 .FormatterVersion 2.0.0 .EMAIL concc@firenet.gov