Spot Forecast
Issued by NWS Rapid City, SD

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255
FNUS73 KUNR 111554
FWSUNR

Spot Forecast for Buck...Great Plains Dispatch
National Weather Service Rapid City SD
954 AM MDT Mon Aug 11 2025

Forecast is based on forecast start time of 1000 MDT on August 11.
If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...
Light and variable surface winds this morning will become northwest
10 to 15 mph later this afternoon with gusts to near 25 mph possible.
Skies will be sunny with minimum RH values around 20 percent. A weak
cool front will slip through the area late this afternoon, which will
provide the potential for the gusty northwest winds. Precipitation is
not forecast for today or tonight.

.REST OF TODAY...

Sky/weather.........Sunny (5-15 percent).
Max temperature.....Around 86.
Min humidity........21 percent.
Wind (20 ft)........Northwest winds 10 to 15 mph. Gusts up to 25
                    mph late in the afternoon.
CWR.................0 percent.
Mixing height.......10100 to 10600 ft agl.
Transport winds.....Northwest 20 to 25 mph.
Smoke dispersal.....Excellent.

TIME (MDT)      10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........1   5   3   2   4   10  16  21
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0
Temp............73  76  79  82  85  85  86  85
RH..............44  37  31  25  21  21  21  23
20 FT wind dir..W   W   W   W   W   NW  NW  NW
20 FT wind spd..9   10  10  12  13  13  13  13
20 FT wind gust.13  14  15  16  24  25  25  25
Mix hgt (kft)...4.0 6.8 9.6 9.9 10  11  10  9.7
Transp wind dir.W   W   W   W   NW  NW  NW  NW
Transp wind spd.16  17  18  20  21  22  22  21

.TONIGHT...

Sky/weather.........Partly cloudy (30-40 percent) then becoming
                    mostly cloudy (45-55 percent) then becoming
                    partly cloudy (35-45 percent).
Min temperature.....Around 61.
Max humidity........70 percent.
Wind (20 ft)........North winds 10 to 15 mph with gusts to around
                    24 mph shifting to the northeast overnight.
CWR.................0 percent.
Mixing height.......400 to 900 ft agl.
Transport winds.....North 15 to 25 mph decreasing to around 10 mph
                    after 3 am.
Smoke dispersal.....Very good decreasing to poor early in the
                    evening.

TIME (MDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........42  35  32  33  41  51  45  50  47  33  38  31
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Temp............83  81  77  75  72  70  69  68  66  65  63  61
RH..............26  30  37  41  46  49  53  55  58  60  65  70
20 FT wind dir..NW  N   N   N   N   N   N   N   NE  NE  NE  N
20 FT wind spd..12  12  10  9   8   8   8   7   6   6   6   6
20 FT wind gust.24  18  16  15  14  14  13  12  10  10  9   9
Mix hgt (kft)...9.3 6.4 3.4 0.5 0.5 0.5 0.6 0.6 0.6 0.6 0.5 0.4
Transp wind dir.NW  N   N   N   N   N   N   N   N   N   N   N
Transp wind spd.21  20  20  18  17  16  14  13  12  9   9   9

.TUESDAY...

Sky/weather.........Sunny (15-25 percent).
Max temperature.....Around 87.
Min humidity........28 percent.
Wind (20 ft)........Northeast winds 5 to 10 mph shifting to the
                    southeast 10 to 15 mph with gusts to around 20
                    mph late in the morning.
CWR.................0 percent.
Mixing height.......9500 to 10000 ft agl.
Transport winds.....Northeast around 10 mph shifting to the
                    southeast early in the morning, then shifting
                    to the southwest 15 to 20 mph late in the
                    morning.
Smoke dispersal.....Good increasing to excellent late in the
                    afternoon.

TIME (MDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........23  32  17  8   8   9   10  10  9   9   11  12
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Temp............61  63  66  69  72  75  77  80  83  84  85  85
RH..............70  67  61  55  49  43  39  34  30  29  28  29
20 FT wind dir..N   NE  NE  E   E   SE  SE  SE  SE  SE  SE  SE
20 FT wind spd..6   5   5   6   7   7   8   9   9   10  12  12
20 FT wind gust.9   9   9   9   10  13  15  17  18  20  20  20
Mix hgt (kft)...0.4 1.2 2.0 2.7 3.8 4.9 6.0 7.4 8.7 10  9.2 8.5
Transp wind dir.NE  NE  SE  SE  S   SW  SW  SW  SW  SW  SW  S
Transp wind spd.9   9   8   9   10  12  14  15  17  18  18  18

$$
Forecaster...DH
Requested by...Dale Ruhoff
Type of request...WILDFIRE
.TAG 2519712.0/UNR
.DELDT 08/11/25
.FormatterVersion 2.0.0
.EMAIL sdgpc@firenet.gov