Spot Forecast
Issued by NWS Denver/Boulder, CO
Issued by NWS Denver/Boulder, CO
233
FNUS75 KBOU 100646
FWSBOU
Spot Forecast for Signature Bluffs Rx...Lafayette Fire Department
National Weather Service Denver/Boulder CO
1146 PM MST Sun Nov 9 2025
If conditions become unrepresentative...contact the National Weather
Service.
.DISCUSSION...
No significant changes to the forecast for the first half of the
week. Tuesday is still expected to see an increase in
northwesterly winds along with above normal temperatures (low to
mid 70s) that will lower RH values into the teens for the
afternoon. Slightly cooler temperatures and lighter winds will
return for Wednesday that will bring RH values up into the mid 20%
range, but lighter winds will mean less mixing and Poor smoke
dispersal for the day.
For the 13th, temperatures will remain above normal and RH values
are expected to drop into the lower 20% range, with mixing heights
climbing to 4,500-5,000 feet in the afternoon. Winds are expected
to start out from the west in the morning before turning to the
S to SSE for the afternoon, with gusts to 15 mph possible.
Guidance currently has the burn site right on the fringe of Poor
vs Fair smoke dispersal (Greeley reaches Fair for a brief time in
the afternoon), but if slightly increased mixing or stronger winds
develop over what the current forecast portrays, this could reach
Fair status in the afternoon, and there is still time for this to
change.
The pattern will begin to shift on Friday as the ridge moves
eastward and increased moisture returns to the region ahead of our
next potential weather system. Afternoon RH will be between 25-30%
and Poor smoke dispersal is expected. There will be increasing
chances for light rain/snow showers after sunset Friday and this
will continue through Saturday as an upper-level trough passes
across the Rockies. The pattern looks to become more active for
the extended period, with more seasonal-like temperatures expected
from Saturday onward.
.MONDAY...
Sky/weather.........Mostly sunny (10-20 percent) until 1600, then
partly cloudy (25-35 percent).
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of thunder...0 percent.
Max temperature.....Around 67.
Min humidity........22 percent.
Wind (20 ft)........Variable up to 5 mph until 0800, then southwest
5 to 7 mph until 1000, then south 5 to 12 mph
until 1700, then southeast around 5 mph.
Mixing height.......Below 1000 FT AGL until 1100, then 1700 ft AGL
until 1600, then Below 1000 FT AGL.
Transport winds.....Southwest around 8 mph until 1100, then light
until 1200, then southwest 8 to 11 mph until
1500, then light until 1600, then south 8 to 9
mph.
Smoke dispersal.....Poor.
TIME (MST) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........8 9 9 10 11 15 18 22 25 29 32
Weather cov.....
Weather type....
Tstm cov........
CWR.............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
Chc of thdr (%).0 0 0 0 0 0 0 0 0 0 0
Temp............24 29 38 45 52 58 63 65 66 63 58
RH..............84 71 51 41 32 26 23 22 22 25 30
20 FT wind dir..W W SW SW S S S S S SW SE
20 FT wind spd..3 5 6 7 7 8 8 8 7 6 5
20 FT wind gust.6 7 9 12 12 13 13 13 12 9 7
Mix hgt (kft)...0.5 0.4 0.5 0.8 1.1 1.3 1.5 1.7 1.5 0.5 0.3
Transp wind dir.W SW SW SW SW SW SW SW SW S S
Transp wind spd.3 5 6 7 7 8 8 8 7 6 6
Vrate kt-ft/1K..1 1 2 4 5 6 7 8 8 2 2
SmokeDispersion.P P P P P P P P P P P
.MONDAY NIGHT...
Sky/weather.........Partly cloudy (35-45 percent) until 2100, then
mostly cloudy (50-60 percent).
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of thunder...0 percent.
Min temperature.....Around 37.
Max humidity........55 percent.
Wind (20 ft)........East winds around 5 mph until 1900. West 5 to 8
mph after 2300.
Mixing height.......Below 1000 FT AGL.
Transport winds.....Light winds until 2000, then west 8 to 10 mph
until 0100, then 8 to 14 mph.
Smoke dispersal.....Poor.
TIME (MST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........37 42 47 51 56 61 60 60 59 58 58 57
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............55 48 46 45 43 42 41 41 40 39 38 38
RH..............34 44 47 45 47 48 50 51 52 55 55 55
20 FT wind dir..E N NW W W W W W W W W W
20 FT wind spd..5 5 6 6 6 6 6 7 7 7 7 7
20 FT wind gust.7 7 9 9 9 9 9 12 12 12 12 12
Mix hgt (kft)...0.4 0.5 0.6 0.5 0.5 0.5 0.5 0.5 0.4 0.5 0.5 0.5
Transp wind dir.S SW W W W W W W W W W W
Transp wind spd.6 5 7 7 8 8 8 7 7 9 12 14
Vrate kt-ft/1K..2 2 3 3 3 3 3 3 3 4 5 6
SmokeDispersion.P P P P P P P P P P P P
.VETERANS DAY...
Sky/weather.........Partly cloudy (35-45 percent) until 1000, then
mostly sunny (10-20 percent).
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of thunder...0 percent.
Max temperature.....Around 74.
Min humidity........17 percent.
Wind (20 ft)........West winds 6 to 11 mph until 1600, then
northwest 5 to 13 mph.
Mixing height.......Below 1000 FT AGL until 0900, then 2200 ft AGL
until 1200, then 5300 ft AGL until 1400, then
6700 ft AGL until 1600, then 2800 ft AGL until
1700, then Below 1000 FT AGL.
Transport winds.....West 8 to 13 mph until 0800, then 8 to 10 mph
until 1000, then light until 1100, then west 8
to 16 mph until 1400, then northwest 12 to 21
mph.
Smoke dispersal.....Poor until 1200, then fair until 1300, then
good until 1400, then very good until 1500,
then good until 1600, then poor.
TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........50 42 35 27 20 12 11 10 10 9 8 7
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............39 41 45 52 60 66 70 73 73 71 68 64
RH..............52 50 44 36 28 23 20 17 17 18 21 24
20 FT wind dir..W W W W W W W NW NW NW NW NW
20 FT wind spd..7 7 7 7 7 7 8 9 9 9 8 7
20 FT wind gust.12 12 12 12 12 12 13 15 15 15 13 12
Mix hgt (kft)...0.5 0.5 0.5 1.1 1.7 2.2 3.9 5.6 7.3 5.0 2.8 0.5
Transp wind dir.W W W W W W W W W NW NW NW
Transp wind spd.12 8 7 7 7 8 13 16 21 17 15 12
Vrate kt-ft/1K..5 4 3 6 11 16 42 80 131 77 35 5
SmokeDispersion.P P P P P P F G VG G P P
.FORECAST DAYS 3 THROUGH 7...
.WEDNESDAY...
Mostly clear. Lows in the lower 30s. Highs in the mid 60s.
Variable winds less than 10 mph.
.THURSDAY...
Partly cloudy. Lows in the upper 30s. Highs in the lower 70s.
Variable winds less than 10 mph.
.FRIDAY...
Partly cloudy. Lows in the mid 30s. Highs in the mid 60s.
Southwest winds around 6 mph.
.SATURDAY...
Cooler. Mostly cloudy with slight chance of rain and snow
showers. Lows in the lower 30s. Highs in the lower 50s.
.SUNDAY...
Partly cloudy with slight chance of rain and snow showers. Lows
in the upper 20s. Highs in the lower 50s.
$$
Forecaster...Bonner
Requested by...Monique Hein
Type of request...PRESCRIBED
.TAG 2524851.3/BOU
.DELDT 11/10/25
.FormatterVersion 2.0.0
.EMAIL ggilbert@fffd.us,mo.hein@lafayetteco.gov