Spot Forecast
Issued by NWS Denver/Boulder, CO
Issued by NWS Denver/Boulder, CO
519
FNUS75 KBOU 011420
FWSBOU
Spot Forecast for River Rocks...USFS
National Weather Service Denver/Boulder CO
820 AM MDT Mon Sep 1 2025
If conditions become unrepresentative...contact the National Weather
Service.
.DISCUSSION... Today will be mostly sunny with dry conditions.
Light northwest winds will become northeasterly in the afternoon.
Gusts could reach 15 mph. Minimum humidity will be between 30-35%.
Tonight, humidity recovery will be up to 60% with light westerly
winds.
There will be a slight chance of showers and weak storms on
Tuesday but little rainfall is expected. Otherwise, conditions
will be similar to today.
.REST OF TODAY...
Sky/weather.........Mostly sunny (10-20 percent) until 1600, then
partly cloudy (25-35 percent).
CWR.................1 percent.
Chance of thunder...2 percent.
Max temperature.....Around 75.
Min humidity........31 percent.
Wind (20 ft)........Variable up to 5 mph until 1000, then northeast
5 to 7 mph until 1200, then east 6 to 11 mph.
Mixing height.......2600 ft AGL until 1000, then 8300 ft AGL.
Transport winds.....North 8 to 11 mph until 1100, then northeast 8
to 13 mph.
Smoke dispersal.....Poor until 1100, then fair until 1300, then
good.
TIME (MDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........1 2 4 7 11 13 18 24 26 29
Weather cov.....
Weather type....
Tstm cov........
CWR.............0 0 0 0 0 0 0 0 0 0
Chc of thdr (%).0 0 0 0 0 0 0 0 0 0
Temp............53 60 67 69 70 72 73 74 73 72
RH..............59 51 39 36 35 33 31 32 33 34
20 FT wind dir..NW N NE NE NE E E E E E
20 FT wind spd..3 3 5 6 7 8 8 9 8 8
20 FT wind gust. 6 7 9 9 9 9 9
Mix hgt (kft)...1.3 2.8 4.9 5.9 6.4 7.4 8.2 8.7 8.4 7.9
Transp wind dir.NW N N N N N NE N NE NE
Transp wind spd.9 8 9 9 9 10 10 12 10 9
Vrate kt-ft/1K..10 20 39 47 51 67 74 87 76 64
SmokeDispersion.P P P F F G G G G G
.TONIGHT...
Sky/weather.........Mostly clear (10-20 percent).
CWR.................0 percent.
Chance of thunder...0 percent.
Min temperature.....Around 48.
Max humidity........61 percent.
Wind (20 ft)........Variable up to 5 mph.
Mixing height.......6200 ft AGL until 1900, then 1200 ft AGL.
Transport winds.....East around 10 mph until 1900, then 8 to 9 mph
until 2100, then around 8 mph until 2300, then
light until 2400, then west around 8 mph until
0200, then 8 to 10 mph.
Smoke dispersal.....Fair until 1900, then poor.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........13 11 22 16 17 11 4 4 5 5 6 8
Weather cov.....
Weather type....
Tstm cov........
CWR.............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............71 67 63 59 57 54 52 51 50 50 49 48
RH..............34 40 44 49 51 57 61 61 61 58 58 58
20 FT wind dir..E E S W W W W W W W W W
20 FT wind spd..3 2 2 2 2 2 2 2 2 2 2 3
20 FT wind gust.12 9 8 7 7 7 7 7 7 7 8 8
Mix hgt (kft)...6.2 2.2 1.3 1.1 1.1 1.1 1.2 1.2 1.3 1.3 1.3 1.3
Transp wind dir.E E E E SE S W W W W W W
Transp wind spd.10 7 6 5 5 5 5 6 6 7 8 8
Vrate kt-ft/1K..55 13 6 5 4 5 5 6 7 8 9 10
SmokeDispersion.F P P P P P P P P P P P
.TUESDAY...
Sky/weather.........Mostly sunny (10-20 percent) until 1200, then
partly cloudy (45-55 percent) until 1700, then
mostly cloudy (50-60 percent). Slight chance of
rain showers and thunderstorms after 1200.
CWR.................6 percent.
Chance of thunder...23 percent.
Max temperature.....Around 75.
Min humidity........31 percent.
Wind (20 ft)........Variable up to 5 mph until 1200, then east 5 to
7 mph until 1400, then around 5 mph until 1600,
then variable up to 5 mph. Gusty and erratic
winds expected near thunderstorms after 1200.
Mixing height.......2700 ft AGL until 1000, then 6600 ft AGL until
1700, then 3800 ft AGL.
Transport winds.....West 8 to 11 mph until 0800, then light.
Smoke dispersal.....Poor until 1200, then fair until 1500, then
poor.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........9 13 9 3 5 25 45 46 47 48 50 53
Weather cov..... SCH SCH SCH SCH SCH SCH
Weather type.... RW RW RW RW RW RW
Tstm cov........ SCH SCH SCH SCH SCH SCH
CWR.............0 0 0 0 0 0 10 10 10 10 10 10
Chc of thdr (%).0 0 0 0 0 0 20 20 20 20 20 20
Temp............51 52 58 65 70 72 72 72 72 72 72 71
RH..............52 50 45 41 34 31 31 31 33 34 35 38
20 FT wind dir..W W NW NW N NE E E E E E E
20 FT wind spd..3 2 2 2 3 3 5 5 3 3 3 2
20 FT wind gust.9 8 7 7 9 12 14 14 13 12 10 10
Mix hgt (kft)...1.3 1.2 1.2 3.1 4.7 6.0 6.7 7.1 7.0 6.4 5.2 3.8
Transp wind dir.W W NW N N N N N N N N NW
Transp wind spd.9 8 5 2 5 6 7 7 7 6 6 6
Vrate kt-ft/1K..10 9 5 6 19 30 40 43 42 32 26 19
SmokeDispersion.P P P P P P F F F P P P
$$
Forecaster...Danielson
Requested by...IC
Type of request...WILDFIRE
.TAG 2521056.0/BOU
.DELDT 09/01/25
.FormatterVersion 2.0.0
.EMAIL concc@firenet.gov