136
FNUS73 KUNR 161037
FWSUNR

Spot Forecast for Boulder Canyon RX...SDGPC
National Weather Service Rapid City SD
437 AM MDT Thu Oct 16 2025

Forecast is based on ignition time of 0600 MDT on October 16.
If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...Cool and cloudy conditions will continue today,
along with showers persisting through the day. Isolated
thunderstorms are possible in the morning. Wetting rains are
likely today. Drier weather will return on Friday, with highs in
the upper 50s to lower 60s.

.TODAY...

Sky/weather.........Cloudy (85-95 percent). Patchy fog in the
                    morning. Slight chance of thunderstorms in the
                    morning. Rain showers likely through the day.
Max temperature.....Around 54.
Min humidity........77 percent.
Wind (20 ft)........Northwest winds 5 to 15 mph. Gusts up to 25 mph.
                    Gusty and erratic winds expected near
                    thunderstorms.
CWR.................50 percent.
Mixing height.......2100 to 2600 ft agl.
Transport winds.....Northwest 15 to 25 mph shifting to the west
                    around 25 mph late in the afternoon.
Smoke dispersal.....Fair.

TIME (MDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........98  98  98  98  98  98  98  94  91  88  83  79
Weather cov.....CHC CHC CHC LKY LKY LKY LKY LKY LKY CHC CHC CHC
Weather type....RNF RNF RW  RW  RW  RW  RW  RW  RW  RW  RW  RW
Tstm cov........SCH SCH SCH SCH SCH SCH
CWR.............50  50  50  50  50  50  50  50  50  50  50  50
Temp............46  46  47  47  48  50  50  51  53  52  51  50
RH..............100 100 96  100 96  89  89  86  77  80  80  80
20 FT wind dir..NW  NW  NW  W   NW  NW  W   W   W   W   W   W
20 FT wind spd..5   6   6   7   8   9   9   11  11  10  10  10
20 FT wind gust.13  15  17  18  20  21  22  23  25  24  24  24
Mix hgt (kft)...0.7 0.7 0.7 1.0 1.4 1.5 1.6 1.9 2.4 2.6 2.3 1.9
Transp wind dir.NW  NW  NW  NW  NW  W   W   W   W   W   W   W
Transp wind spd.12  14  16  18  20  21  21  21  21  22  22  22

.TONIGHT...

Sky/weather.........Mostly cloudy (65-75 percent). Chance of rain
                    showers in the evening.
Min temperature.....Around 41.
Max humidity........96 percent.
Wind (20 ft)........West winds 10 to 15 mph. Gusts up to 30 mph.
CWR.................25 percent.
Mixing height.......500 to 1000 ft agl.
Transport winds.....West 25 to 30 mph increasing to 35 to 40 mph
                    late in the evening.
Smoke dispersal.....Poor.

TIME (MDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........74  71  67  64  65  65  66  66  66  66  64  63
Weather cov.....CHC CHC CHC CHC CHC CHC
Weather type....RW  RW  RW  RW  RW  RW
Tstm cov........
CWR.............20  20  20  20  20  20  20  20  20  20  20  20
Temp............46  45  44  41  43  42  42  43  43  43  43  44
RH..............86  89  89  96  82  86  86  79  79  79  79  76
20 FT wind dir..W   W   W   W   W   W   W   W   W   W   W   W
20 FT wind spd..9   10  12  13  13  14  13  14  14  14  14  14
20 FT wind gust.23  25  26  26  26  26  27  31  31  31  33  32
Mix hgt (kft)...1.2 0.7 0.5 0.6 0.5 0.6 0.6 0.5 0.5 0.6 0.5 0.5
Transp wind dir.W   W   W   W   W   W   W   W   W   W   W   W
Transp wind spd.22  23  24  25  29  32  35  36  36  36  37  37

.FRIDAY...

Sky/weather.........Mostly sunny (40-50 percent).
Max temperature.....Around 60.
Min humidity........40 percent.
Wind (20 ft)........West winds 10 to 15 mph with gusts to around 30
                    mph.
CWR.................0 percent.
Mixing height.......4100 to 4600 ft agl.
Transport winds.....West 35 to 40 mph decreasing to around 30 mph
                    late in the afternoon.
Smoke dispersal.....Very good.

TIME (MDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........61  59  57  33  29  28  27  31  35  39  45  52
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Temp............42  44  45  48  53  56  57  58  59  59  58  56
RH..............79  70  65  60  50  45  43  42  40  40  42  45
20 FT wind dir..W   W   W   W   W   W   W   W   W   W   W   W
20 FT wind spd..13  13  13  14  14  15  15  15  15  14  12  10
20 FT wind gust.31  31  30  29  29  30  30  30  29  28  25  23
Mix hgt (kft)...0.5 0.9 1.2 1.6 2.1 2.6 3.1 3.6 4.1 4.6 3.3 2.1
Transp wind dir.W   W   W   W   W   W   W   W   W   W   W   W
Transp wind spd.38  38  38  39  39  39  39  39  38  36  32  28

$$
Forecaster...13
Requested by...Lydia Raderschadt
Type of request...PRESCRIBED
.TAG 2523594.2/UNR
.DELDT 10/16/25
.FormatterVersion 2.0.0
.EMAIL dewey.arnold@state.sd.us,sdgpc@firenet.gov