Spot Forecast
Issued by NWS Denver/Boulder, CO

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FNUS75 KBOU 020014
FWSBOU

Spot Forecast for Ruby Ranch Handpiles...USFS White River NF
National Weather Service Denver/Boulder CO
514 PM MST Mon Dec 1 2025

If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...Skies will become mostly cloudy by 0700 with a chance of
snow after 1100.  Snow is expected to become likely by 1700.  Winds
will be southwest at 6 to 12 mph until 0900, then west 5 to
10 mph until 1700.  Smoke dispersal will be poor until 1000, then
fair until 1500, after 1500 back to poor.

Snow will be likely Tuesday night and continue through Wednesday with
poor dispersal during that period.


.TUESDAY...

Sky/weather.........Partly cloudy (40-50 percent) until 0700, then
                    mostly cloudy (70-80 percent). Chance of snow
                    after 1100 until 1700, then snow likely.
Chance of pcpn......60 percent.
Max temperature.....Around 32.
Wind (20 ft)........Southwest winds 6 to 12 mph until 0900, then
                    west 5 to 10 mph until 1700. Northwest 5 to
                    10 mph after 1700.
Mixing height.......3100 ft AGL.
Transport winds.....West 10 to 18 mph until 1200. Around 10 mph
                    after 1700.
Smoke dispersal.....Poor until 1100, then fair until 1500, then
                    poor.

TIME (MST)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........46  55  55  60  63  66  70  73  76  78  82  95
Weather cov.....                    CHC CHC CHC CHC CHC CHC LKY
Weather type....                    SN  SN  SN  SN  SN  SN  SN
Tstm cov........
Chc of pcpn (%).10  10  10  10  10  40  40  40  40  40  50  60
Temp............8   12  15  20  24  28  31  32  31  29  27  25
20 FT wind dir..SW  SW  W   W   W   W   W   W   W   W   W   NW
20 FT wind spd..7   7   7   7   7   7   7   8   8   8   7   6
20 FT wind gust.12  12  12  12  12  12  12  13  13  13  12  18
Mix hgt (kft)...1.5 1.5 1.5 2.1 2.6 3.1 3.2 3.4 3.2 2.7 2.2 1.9
Transp wind dir.W   W   W   W   W   W   W   W   W   W   W   W
Transp wind spd.10  12  10  15  16  18  20  17  18  16  14  10
Vrate kt-ft/1K..14  15  13  28  36  50  55  51  52  38  26  17
SmokeDispersion.P   P   P   P   P   F   F   F   F   P   P   P

.TUESDAY NIGHT...

Sky/weather.........Cloudy (85-95 percent). Snow likely until 0500,
                    then snow.
Chance of pcpn......80 percent.
Min temperature.....Around 13.
Wind (20 ft)........North winds around 5 mph until 1900, then
                    variable up to 5 mph until 2000, then west
                    around 5 mph until 2200, then variable up to 5
                    mph.
Mixing height.......1500 ft AGL.
Transport winds.....Northwest 8 to 11 mph until 0400, then 8 to 10
                    mph.
Smoke dispersal.....Poor.

TIME (MST)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........90  85  89  85  85  84  84  84  84  87  91  94
Weather cov.....LKY LKY LKY LKY LKY LKY LKY LKY LKY LKY LKY DEF
Weather type....SN  SN  SN  SN  SN  SN  SN  SN  SN  SN  SN  SN
Tstm cov........
Chc of pcpn (%).60  60  60  60  60  70  70  70  70  70  70  80
Temp............23  22  21  20  19  18  17  17  16  15  14  14
20 FT wind dir..N   NW  W   W   W   W   W   W   W   NW  NW  NW
20 FT wind spd..5   3   3   3   2   2   2   2   2   2   2   2
20 FT wind gust.16  14  13  12  10  9   8   7   7   7   7   7
Mix hgt (kft)...1.7 1.6 1.7 1.6 1.5 1.5 1.5 1.5 1.5 1.5 1.6 1.6
Transp wind dir.W   NW  W   W   NW  NW  NW  NW  NW  NW  NW  NW
Transp wind spd.8   9   9   9   9   9   9   8   8   8   7   7
Vrate kt-ft/1K..12  12  13  13  12  12  12  11  11  10  10  10
SmokeDispersion.P   P   P   P   P   P   P   P   P   P   P   P

.WEDNESDAY...

Sky/weather.........Mostly cloudy (80-90 percent). Snow until 1700,
                    then chance of snow.
Chance of pcpn......80 percent.
Max temperature.....Around 25.
Wind (20 ft)........Variable up to 5 mph until 0800, then east
                    around 5 mph until 1200, then variable up to 5
                    mph until 1300, then east 5 to 7 mph until
                    1500, then variable up to 5 mph.
Mixing height.......4200 ft AGL.
Transport winds.....Light winds until 0700, then northeast 8 to 9
                    mph until 0900, then light until 1100, then
                    south 8 to 11 mph until 1300, then southwest 8
                    to 12 mph until 1600, then northwest 10 to 15
                    mph.
Smoke dispersal.....Poor.

TIME (MST)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........94  94  94  94  94  94  94  94  94  94  94  79
Weather cov.....DEF DEF DEF DEF DEF DEF DEF DEF DEF DEF DEF CHC
Weather type....SN  SN  SN  SN  SN  SN  SN  SN  SN  SN  SN  SN
Tstm cov........
Chc of pcpn (%).80  80  80  80  80  80  80  80  80  80  80  30
Temp............14  14  15  17  20  22  23  24  24  23  21  19
20 FT wind dir..N   NE  E   E   E   E   E   E   E   E   NE  N
20 FT wind spd..2   3   3   3   3   3   3   5   5   3   3   2
20 FT wind gust.7   7   8   9   12  13  14  15  15  15  15  14
Mix hgt (kft)...1.7 1.8 1.9 2.8 3.7 4.6 4.5 4.3 4.1 3.8 3.4 3.0
Transp wind dir.N   NE  NE  E   SE  S   S   SW  SW  W   NW  NW
Transp wind spd.7   6   6   7   7   8   9   9   10  10  12  12
Vrate kt-ft/1K..10  10  10  16  24  32  34  36  37  35  33  30
SmokeDispersion.P   P   P   P   P   P   P   P   P   P   P   P

$$
Forecaster...RPK
Requested by...Dusty Calfee
Type of request...PRESCRIBED
.TAG 2526812.0/BOU
.DELDT 12/01/25
.FormatterVersion 2.0.0
.EMAIL creighton.calfee@usda.gov