Spot Forecast
Issued by NWS Denver/Boulder, CO
Issued by NWS Denver/Boulder, CO
664
FNUS75 KBOU 162056
FWSBOU
Spot Forecast for Pearl...OTHER
National Weather Service Denver/Boulder CO
256 PM MDT Mon Sep 16 2024
If conditions become unrepresentative...contact the National Weather
Service.
.DISCUSSION...Generally mostly cloudy skies this afternoon and
evening, with light southerly to southeasterly winds. The Red
Feather RAWS shows light southeast winds, but some private weather
stations in the Crystal Lakes area currently have light and
variable winds. There still is the possibility of stronger wind
gusts this afternoon and evening with any passing showers or
storms, but current radar would suggest the possibility of this is
rather low (<25%). Temperatures/humidity are likely near their
peak values for the day and should see some improvement by 5-6pm.
Overnight, winds should shift to a southwesterly direction with
speeds remaining fairly light. Overnight lows should reach the mid
to upper 40s with humidity recovery near 60-70%.
Stronger winds should develop on Tuesday, with southwesterly flow
increasing through the day. Sustained winds of 15 to 25 mph are
expected by the afternoon hours with some gusts to around 35 mph.
A line of showers and embedded thunderstorms is expected during
the early afternoon hours tomorrow, which could produce gusts near
50-60 mph. Gusty winds will linger into the evening hours.
.REST OF TODAY...
Sky/weather.........Mostly cloudy (60-70 percent). Chance of rain
showers and thunderstorms.
CWR.................6 percent.
LAL.................4.
Max temperature.....Around 62.
Min humidity........30 percent.
Wind (20 ft)........Southeast winds 7 to 12 mph, with gusts up to
20 mph. Gusty and erratic winds expected near
thunderstorms.
Mixing height.......6600 ft AGL.
Transport winds.....South 12 to 17 mph.
Smoke dispersal.....Good until 1600. Fair after 1700.
Haines Index........4 or low potential for large plume dominated
fire growth.
TIME (MDT) 3PM 4PM 5PM
Sky (%).........71 75 56
Weather cov.....CHC CHC CHC
Weather type....RW RW RW
Tstm cov........CHC CHC CHC
CWR.............10 10 10
LAL.............4 4 4
Temp............63 61 59
RH..............30 33 36
20 FT wind dir..SE SE SE
20 FT wind spd..8 8 9
20 FT wind gust.18 19 21
Mix hgt (kft)...6.9 6.3 5.2
Transp wind dir.S S S
Transp wind spd.15 13 13
Haines index....4 4 4
Vrate kt-ft/1K..90 70 52
SmokeDispersion.G G F
.TONIGHT...
Sky/weather.........Mostly cloudy (55-65 percent) until 2000, then
partly cloudy. Slight chance of rain showers and
thunderstorms until 2100, then slight chance of
showers until 2300.
CWR.................6 percent.
LAL.................4 until 1900, then 3 until 2100, then 1.
Min temperature.....Around 44.
Max humidity........70 percent.
Wind (20 ft)........South winds 7 to 12 mph until 2100, then
southwest. Gusty and erratic winds expected
near thunderstorms until 2100.
Mixing height.......3000 ft AGL until 1900, then Below 1000 FT AGL.
Transport winds.....Southwest 9 to 17 mph.
Smoke dispersal.....Poor.
Haines Index........3 or very low potential for large plume
dominated fire growth.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........62 53 49 40 42 37 49 41 33 42 32 27
Weather cov.....SCH SCH SCH SCH SCH
Weather type....RW RW RW RW RW
Tstm cov........CHC SCH SCH
CWR.............10 10 10 10 0 0 0 0 0 0 0 0
LAL.............4 3 3 1 1 1 1 1 1 1 1 1
Temp............58 55 52 49 48 48 48 47 47 45 45 44
RH..............42 49 56 63 63 60 60 63 63 65 65 68
20 FT wind dir..S S SW SW SW SW SW SW SW SW SW SW
20 FT wind spd..10 8 9 8 9 9 10 10 10 10 10 10
20 FT wind gust.16 13 15 13 15 15 16 16 16 16 16 16
Mix hgt (kft)...3.0 0.4 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3
Transp wind dir.S SW SW SW SW SW SW SW SW SW SW SW
Transp wind spd.13 10 9 10 12 14 15 15 17 15 16 17
Haines index....3 3 3 3 3 3 3 3 3 3 3 3
Vrate kt-ft/1K..33 4 2 2 3 3 4 4 4 4 4 4
SmokeDispersion.P P P P P P P P P P P P
.TUESDAY...
Sky/weather.........Partly cloudy (35-45 percent) until 1200, then
mostly cloudy (80-90 percent). Rain showers and
chance of thunderstorms after 1200.
CWR.................4 percent increasing to 45 percent early in the
afternoon, then increasing to 72 percent late
in the afternoon decreasing to 62 percent late
in the afternoon.
LAL.................1 until 1200, then 4.
Max temperature.....Around 60.
Min humidity........37 percent.
Wind (20 ft)........Breezy. South winds 10 to 15 mph with gusts to
around 20 mph until 1300, then southwest 15 to
25 mph with gusts to around 35 mph. Stronger gusts
around 50 to 60 mph possible near showers and
thunderstorms after 1300.
Mixing height.......Below 1000 FT AGL until 0900, then 2700 ft AGL
until 1100, then 5200 ft AGL until 1500, then
3500 ft AGL.
Transport winds.....Southwest 12 to 17 mph until 1000, then south
13 to 21 mph until 1500, then southwest 28 to
33 mph.
Smoke dispersal.....Poor until 1100, then good until 1500, then
fair until 1600, then good until 1700, then
very good.
Haines Index........4 or low potential for large plume dominated
fire growth.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........30 34 30 35 39 48 85 93 95 88 83 79
Weather cov..... CHC LKY DEF DEF LKY LKY
Weather type.... RW RW RW RW RW RW
Tstm cov........ CHC CHC CHC CHC CHC CHC
CWR.............0 0 0 0 0 0 50 70 70 70 70 60
LAL.............1 1 1 1 1 1 4 4 4 4 4 4
Temp............44 45 48 51 56 59 60 58 54 51 50 50
RH..............70 70 63 54 45 39 37 42 52 59 58 56
20 FT wind dir..SW SW S S S SE SE S SW SW SW SW
20 FT wind spd..10 10 9 10 10 12 13 13 20 23 24 25
20 FT wind gust.16 16 15 16 16 18 21 21 30 35 37 38
Mix hgt (kft)...0.3 0.3 0.4 1.5 2.9 4.3 5.2 5.0 4.5 2.2 2.7 3.7
Transp wind dir.SW SW SW S S S S S S SW SW SW
Transp wind spd.16 14 13 14 13 18 21 21 21 28 28 32
Haines index....4 4 4 4 4 4 4 4 4 4 4 4
Vrate kt-ft/1K..4 3 5 18 32 69 94 90 81 52 65 105
SmokeDispersion.P P P P P G G G G F G VG
$$
Forecaster...Hiris
Requested by...Fort Collins Dispatch
Type of request...WILDFIRE
.TAG 2422581.0/BOU
.DELDT 09/16/24
.FormatterVersion 2.0.0
.EMAIL coftc@firenet.gov