Spot Forecast
Issued by NWS Denver/Boulder, CO

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743
FNUS75 KBOU 091234
FWSBOU

Spot Forecast for Indiana Gulch RX...USFS
National Weather Service Denver/Boulder CO
534 AM MST Tue Dec 9 2025

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

.DISCUSSION... Today will see mostly cloudy skies with a few
flurries. West winds will be strong with gusts potentially
reaching 45 mph. The strong winds, along with decent vent rates,
will lead to a couple hours pf good smoke dispersal.

The chance for snow increases tonight but with light amounts.
1-2" of snow is the most likely accumulation.

Wednesday will be similar to today. Light snow showers may fall
with minimal accumulation. West winds will gust up to 40 mph.
Vent rates will decrease so smoke dispersal will be fair for the
majority of the day.

.REST OF TODAY...

Sky/weather.........Partly cloudy (35-45 percent) until 1600, then
                    mostly cloudy (50-60 percent). Patchy blowing
                    snow. Chance of snow after 1100 until 1700,
                    then slight chance of snow.
CWR.................6 percent.
Chance of pcpn......30 percent.
Chance of thunder...0 percent.
Max temperature.....Around 32.
Min humidity........63 percent.
Wind (20 ft)........Northwest winds 19 to 27 mph with gusts to
                    around 41 mph.
Mixing height.......Below 1000 FT AGL until 0900, then 1800 ft AGL
                    until 1700, then Below 1000 FT AGL.
Transport winds.....Northwest 26 to 35 mph until 1200, then 30 to
                    39 mph until 1700, then around 28 mph.
Smoke dispersal.....Poor until 1100, then fair until 1300, then
                    good until 1500, then poor.

TIME (MST)      7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........31  34  33  37  50  50  50  50  50  54  60
Weather cov.....PTY PTY PTY PTY CHC CHC CHC CHC CHC CHC SCH
Weather type....BSN BSN BSN BSN SN  SN  SN  SN  SN  SN  SN
Tstm cov........
CWR.............0   0   0   0   10  10  10  10  10  10  10
Chc of pcpn (%).10  10  10  10  30  30  30  30  30  30  20
Chc of thdr (%).0   0   0   0   0   0   0   0   0   0   0
Temp............20  19  21  25  28  29  30  32  30  30  29
RH..............74  77  74  71  68  66  69  63  69  66  69
20 FT wind dir..NW  W   W   NW  NW  NW  NW  NW  NW  NW  NW
20 FT wind spd..21  21  21  22  22  23  24  24  23  23  22
20 FT wind gust.36  36  36  37  37  39  41  41  39  35  35
Mix hgt (kft)...0.5 0.7 1.0 1.1 1.5 1.8 1.8 1.8 1.3 1.1 0.8
Transp wind dir.NW  NW  NW  NW  NW  NW  NW  NW  NW  NW  NW
Transp wind spd.26  26  28  31  35  38  39  38  33  30  28
Vrate kt-ft/1K..10  17  23  30  44  59  63  61  38  28  20
SmokeDispersion.P   P   P   P   F   F   G   G   P   P   P

.TONIGHT...

Sky/weather.........Mostly cloudy (65-75 percent). Patchy blowing
                    snow until 0400. Slight chance of snow until
                    2300. Chance of snow after 2300 until 0500,
                    then slight chance of snow.
CWR.................7 percent.
Chance of pcpn......30 percent.
Chance of thunder...0 percent.
Min temperature.....Around 24.
Max humidity........96 percent.
Wind (20 ft)........West winds 17 to 25 mph with gusts to around 37
                    mph.
Mixing height.......Below 1000 FT AGL.
Transport winds.....Northwest 22 to 28 mph.
Smoke dispersal.....Poor.

TIME (MST)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........62  63  67  66  69  71  71  69  68  66  71  76
Weather cov.....SCH SCH SCH SCH SCH CHC CHC CHC CHC CHC CHC SCH
Weather type....SN  SN  SN  SN  SN  SN  SN  SN  SN  SN  SN  SN
Tstm cov........
CWR.............10  10  10  10  10  10  10  10  10  10  10  10
Chc of pcpn (%).20  20  20  20  20  30  30  30  30  30  30  20
Chc of thdr (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............28  29  29  29  27  28  28  27  28  27  27  27
RH..............75  75  78  78  81  81  81  81  78  81  81  85
20 FT wind dir..NW  W   W   W   W   W   W   W   W   W   W   NW
20 FT wind spd..22  23  24  24  24  23  23  22  20  18  17  17
20 FT wind gust.35  35  37  37  37  35  35  35  33  33  33  32
Mix hgt (kft)...0.8 0.5 0.5 0.7 0.5 0.5 0.5 0.4 0.5 0.5 0.7 0.6
Transp wind dir.NW  NW  NW  NW  NW  NW  NW  NW  NW  NW  NW  NW
Transp wind spd.28  26  26  28  25  24  24  22  22  24  24  23
Vrate kt-ft/1K..19  12  12  16  11  10  10  8   9   10  15  13
SmokeDispersion.P   P   P   P   P   P   P   P   P   P   P   P

.WEDNESDAY...

Sky/weather.........Mostly cloudy (60-70 percent). Slight chance of
                    snow until 1100. Patchy blowing snow after
                    0900.
CWR.................5 percent.
Chance of pcpn......20 percent.
Chance of thunder...0 percent.
Max temperature.....Around 33.
Min humidity........75 percent.
Wind (20 ft)........West winds 15 to 23 mph with gusts to around 37
                    mph.
Mixing height.......Below 1000 FT AGL until 0800, then 2000 ft AGL
                    until 1700, then Below 1000 FT AGL.
Transport winds.....Northwest 23 to 32 mph.
Smoke dispersal.....Poor until 1000, then fair until 1500, then
                    poor.

TIME (MST)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........68  78  75  70  69  68  63  59  54  54  53  53
Weather cov.....SCH SCH SCH SCH SCH PTY PTY PTY PTY PTY PTY PTY
Weather type....SN  SN  SN  SN  SN  BSN BSN BSN BSN BSN BSN BSN
Tstm cov........
CWR.............10  10  10  10  10  0   0   0   0   0   0   0
Chc of pcpn (%).20  20  20  20  20  10  10  10  10  10  10  0
Chc of thdr (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............25  26  25  25  26  29  31  32  33  32  31  30
RH..............96  88  92  96  96  88  81  78  75  75  78  78
20 FT wind dir..NW  NW  W   W   W   W   W   W   W   W   W   W
20 FT wind spd..17  17  17  17  18  18  20  21  21  20  20  18
20 FT wind gust.32  32  32  32  33  35  36  37  37  36  35  35
Mix hgt (kft)...0.5 0.5 1.3 1.6 1.8 2.0 1.7 1.8 1.9 1.5 1.2 0.9
Transp wind dir.NW  NW  NW  NW  NW  NW  NW  NW  NW  NW  NW  NW
Transp wind spd.23  23  24  28  32  32  30  30  30  29  26  25
Vrate kt-ft/1K..9   11  27  39  52  55  45  47  49  38  29  20
SmokeDispersion.P   P   P   P   F   F   F   F   F   P   P   P

$$
Forecaster...Danielson
Requested by...Casey Gorsett
Type of request...PRESCRIBED
.TAG 2527248.0/BOU
.DELDT 12/09/25
.FormatterVersion 2.0.0
.EMAIL cgorsett@blm.gov