420 FNUS75 KBOU 091551 FWSBOU Spot Forecast for Signature Bluffs RX...FFFD National Weather Service Denver/Boulder CO 951 AM MDT Wed Apr 9 2025 If conditions become unrepresentative...contact the National Weather Service. ...RED FLAG WARNING IN EFFECT UNTIL 7 PM MDT THIS EVENING... .DISCUSSION...Gusty northwest winds to 40 mph will develop by 11 am, and then continue through the afternoon with critical Red Flag conditions in place as humidities drop to around 12-13%. Winds will gradually decrease early this evening. Looking ahead to Thursday, burn conditions will be more favorable with light southeast winds expected to develop by or shortly before noon, and hold through the afternoon hours. It will still be mild with low humidity under mostly sunny skies. Unseasonably warm weather with highs above 80F can be expected Friday and Saturday. Winds and critical fire weather conditions may increase again by this weekend. .REST OF TODAY... Sky/weather.........Mostly sunny (15-25 percent) until 1700, then partly cloudy (20-30 percent). CWR.................0 percent. Chance of pcpn......0 percent. Chance of thunder...0 percent. Max temperature.....Around 72. Min humidity........13 percent. Wind (20 ft)........Breezy. Northwest winds 14 to 22 mph until 1300, then 21 to 29 mph. Gusts up to 40 mph. Mixing height.......5700 ft AGL until 1100, then 12000 ft AGL. Transport winds.....Northwest 20 to 28 mph until 1200, then 32 to 37 mph. Smoke dispersal.....Good until 1100, then excellent. TIME (MDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........12 17 18 19 23 22 21 26 Weather cov..... Weather type.... Tstm cov........ CWR.............0 0 0 0 0 0 0 0 Chc of pcpn (%).0 0 0 0 0 0 0 0 Chc of thdr (%).0 0 0 0 0 0 0 0 Temp............62 65 68 70 71 72 72 71 RH..............25 21 19 16 15 14 13 14 20 FT wind dir..NW NW NW NW NW NW NW NW 20 FT wind spd..15 17 21 24 25 26 26 25 20 FT wind gust.23 28 33 36 38 39 40 38 Mix hgt (kft)...5.7 8.7 11 11 12 12 12 12 Transp wind dir.NW NW NW NW NW NW NW NW Transp wind spd.20 28 32 35 37 37 37 35 Vrate kt-ft/1K..97 210 295 343 381 391 386 353 SmokeDispersion.G E E E E E E E .TONIGHT... Sky/weather.........Mostly clear (10-20 percent). CWR.................0 percent. Chance of pcpn......0 percent. Chance of thunder...0 percent. Min temperature.....Around 35. Max humidity........61 percent. Wind (20 ft)........Northwest winds 18 to 26 mph with gusts to around 35 mph until 2000, then 9 to 16 mph with gusts to around 25 mph until 0200, then north 6 to 11 mph. Mixing height.......10300 ft AGL until 1900. Below 1000 FT AGL after 2000. Transport winds.....Northwest around 32 mph until 1900, then 12 to 21 mph until 2400, then 8 to 13 mph until 0300, then north 8 to 12 mph. Smoke dispersal.....Excellent until 1900, then poor. TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky (%).........19 11 9 10 10 12 11 15 13 11 14 10 Weather cov..... Weather type.... Tstm cov........ CWR.............0 0 0 0 0 0 0 0 0 0 0 0 Chc of pcpn (%).0 0 0 0 0 0 0 0 0 0 0 0 Chc of thdr (%).0 0 0 0 0 0 0 0 0 0 0 0 Temp............69 65 59 55 52 49 47 45 42 39 37 35 RH..............15 18 23 25 28 31 34 36 43 48 54 61 20 FT wind dir..NW NW NW NW NW NW NW NW N N N N 20 FT wind spd..23 20 16 13 12 10 10 9 9 8 7 7 20 FT wind gust.35 31 25 16 15 15 15 15 15 13 12 9 Mix hgt (kft)...10 1.4 0.7 0.7 0.6 0.6 0.6 0.7 0.6 0.6 0.6 0.6 Transp wind dir.NW NW NW NW NW NW NW NW N N N N Transp wind spd.32 21 17 14 13 12 10 10 10 10 10 8 Vrate kt-ft/1K..288 26 11 8 7 6 5 6 5 6 5 4 SmokeDispersion.E P P P P P P P P P P P .THURSDAY... Sky/weather.........Mostly sunny (0-10 percent). CWR.................0 percent. Chance of pcpn......0 percent. Chance of thunder...0 percent. Max temperature.....Around 68. Min humidity........20 percent. Wind (20 ft)........North winds 5 to 7 mph until 0900, then variable up to 5 mph until 1100, then east around 5 mph until 1200, then southeast 5 to 7 mph. Mixing height.......Below 1000 FT AGL until 0900, then 4800 ft AGL. Transport winds.....North 8 to 11 mph until 0800, then around 8 mph until 1000, then light until 1200, then west 8 to 10 mph until 1400, then 8 to 11 mph until 1700, then south around 8 mph. Smoke dispersal.....Poor. TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........9 10 9 8 8 7 6 5 5 4 5 6 Weather cov..... Weather type.... Tstm cov........ CWR.............0 0 0 0 0 0 0 0 0 0 0 0 Chc of pcpn (%).0 0 0 0 0 0 0 0 0 0 0 0 Chc of thdr (%).0 0 0 0 0 0 0 0 0 0 0 0 Temp............38 37 41 46 53 57 59 62 64 66 67 68 RH..............56 59 52 45 37 32 29 25 23 22 20 20 20 FT wind dir..NW N N NE NE E SE SE SE SE SE SE 20 FT wind spd..6 6 5 3 3 5 5 6 6 6 6 6 20 FT wind gust.9 9 7 6 6 7 7 9 9 9 9 9 Mix hgt (kft)...0.6 0.7 0.9 2.1 3.1 3.6 4.0 4.4 4.8 5.1 4.8 4.4 Transp wind dir.NE N N NE NE SE SW W W NW W S Transp wind spd.9 8 5 6 7 7 7 7 8 8 8 8 Vrate kt-ft/1K..4 5 4 10 18 21 24 28 32 36 34 31 SmokeDispersion.P P P P P P P P P P P P .FORECAST DAYS 3 THROUGH 5... .FRIDAY... Warmer. Mostly clear. Lows in the mid 30s. Highs in the lower 80s. Southeast winds around 6 mph. .SATURDAY... Partly cloudy. Lows in the mid 40s. Highs in the mid 80s. Southwest winds around 8 mph. .SUNDAY... Not as warm. Partly cloudy. Slight chance of showers. Lows in the upper 40s. Highs in the lower 70s. West winds around 16 mph. $$ Forecaster...Barjenbruch Requested by...Greg Gilbert Type of request...PRESCRIBED .TAG 2509129.0/BOU .DELDT 04/09/25 .FormatterVersion 2.0.0 .EMAIL GGILBERT@FFFD.US,greg.gilbert@emberalliance.org,jennifer@emberalliance.org,geoff.butler@poudre-fire.org,ben.ojinaga@greeleygov.com