406
FNUS73 KUNR 101942
FWSUNR

Spot Forecast for Potato Creek...USWFS - SD-PRA
National Weather Service Rapid City SD
142 PM MDT Mon Aug 10 2026

Forecast is based on forecast start time of 1124 MDT on August 10.
If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...Elevated fire weather conditions are likely today.
Humidities will drop to around 25 to 30% this afternoon. Southeast
winds will be around 10 to 15 mph with gusts near 20 mph possible
in the afternoon. Temperatures will reach the mid to upper 90s.

There is a slight (around 20%) chance for passing showers and
thunderstorms around 5 to 9PM, though the better chances for
precip are farther to the east.

Winds will diminish tonight to light and variable with overnight
humidity recovering to greater than 90%.

Easterly winds return by midday Tuesday at around 10 to 15 mph
with gusts around 20 to 25 mph. Afternoon temps will reach the low
90s with humidities dropping to around 35%.

Cooler weather and more chances for rain are likely later this
week.


.REST OF TODAY...

Sky/weather.........Mostly sunny (25-35 percent). Chance of
                    sprinkles late in the morning. Areas of smoke
                    in the afternoon.
Max temperature.....Around 98.
Min humidity........27 percent.
Wind (20 ft)........Southeast winds 10 to 15 mph with gusts to
                    around 24 mph.
CWR.................0 percent.
Mixing height.......8600 to 9100 ft agl.
Transport winds.....South 20 to 25 mph.
Smoke dispersal.....Good increasing to excellent late in the
                    afternoon.

TIME (MDT)      11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........26  30  30  30  30  30  30
Weather cov.....CHC CHC CHC CHC ARS ARS ARS
Weather type....RW  RW  RW  RW  SMK SMK SMK
Tstm cov........
CWR.............0   0   0   0   0   0   0
Temp............82  89  91  93  94  95  96
RH..............62  49  44  40  36  31  27
20 FT wind dir..SE  SE  SE  SE  SE  SE  SE
20 FT wind spd..12  13  14  14  14  14  15
20 FT wind gust.18  20  21  21  22  22  24
Mix hgt (kft)...2.8 3.5 4.4 5.5 9.1 7.1 7.2
Transp wind dir.SE  SE  S   S   S   S   SW
Transp wind spd.18  18  18  20  21  22  23

.TONIGHT...

Sky/weather.........Partly cloudy (35-45 percent) then becoming
                    mostly cloudy (45-55 percent) then becoming
                    partly cloudy (40-50 percent) then becoming
                    mostly cloudy (45-55 percent). Areas of smoke.
Min temperature.....Around 65.
Max humidity........95 percent.
Wind (20 ft)........Southeast winds 10 to 20 mph with gusts to
                    around 25 mph shifting to the east around 10
                    mph with gusts to around 14 mph after 3 am.
CWR.................0 percent.
Mixing height.......500 to 1000 ft agl.
Transport winds.....Southwest around 25 mph shifting to the east
                    early in the evening, then decreasing to 10 to
                    15 mph overnight.
Smoke dispersal.....Poor.

TIME (MDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........39  39  39  42  42  45  52  46  40  42  52  51
Weather cov.....ARS ARS ARS ARS ARS ARS ARS ARS ARS ARS ARS ARS
Weather type....SMK SMK SMK SMK SMK SMK SMK SMK SMK SMK SMK SMK
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Temp............92  87  82  78  75  72  70  69  67  67  65  64
RH..............31  37  47  59  64  70  77  82  87  88  89  92
20 FT wind dir..SE  E   E   SE  SE  E   E   SE  SE  E   E   NE
20 FT wind spd..15  16  17  17  15  13  12  9   9   8   8   6
20 FT wind gust.24  25  25  25  23  21  20  17  15  14  14  13
Mix hgt (kft)...5.7 1.5 0.6 0.6 0.8 0.9 1.1 1.0 1.0 0.9 0.7 0.6
Transp wind dir.SW  S   SE  E   E   E   E   E   E   E   E   E
Transp wind spd.23  24  25  25  23  21  18  16  14  13  12  10

.TUESDAY...

Sky/weather.........Mostly sunny (25-35 percent). Areas of smoke.
Max temperature.....Around 92.
Min humidity........35 percent.
Wind (20 ft)........Northeast winds 10 to 15 mph shifting to the
                    east around 20 mph late in the afternoon. Gusts
                    up to 16 mph early in the morning increasing to
                    28 mph.
CWR.................0 percent.
Mixing height.......6100 to 6600 ft agl.
Transport winds.....East 10 to 20 mph shifting to the southeast 20
                    to 25 mph late in the afternoon.
Smoke dispersal.....Good increasing to very good late in the
                    afternoon.

TIME (MDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........55  45  28  13  9   16  26  14  10  24  22  14
Weather cov.....ARS ARS ARS ARS ARS ARS ARS ARS ARS ARS ARS ARS
Weather type....SMK SMK SMK SMK SMK SMK SMK SMK SMK SMK SMK SMK
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Temp............64  66  69  71  77  81  84  88  90  91  91  91
RH..............96  92  85  78  67  57  49  42  38  36  37  35
20 FT wind dir..NE  NE  NE  NE  NE  E   E   E   E   E   E   E
20 FT wind spd..8   7   7   7   8   9   10  12  13  14  15  17
20 FT wind gust.10  9   10  10  12  14  16  20  22  24  25  28
Mix hgt (kft)...0.5 0.8 1.1 1.4 2.2 2.9 3.7 4.7 5.6 6.6 6.3 6.1
Transp wind dir.E   E   E   E   E   E   E   E   SE  SE  SE  E
Transp wind spd.10  10  12  13  14  16  17  18  20  21  23  24

.FORECAST DAYS 3 THROUGH 5...
.WEDNESDAY...
Mostly cloudy. Areas of smoke. Chance of showers and
thunderstorms. Lows in the mid 60s. Highs in the mid 80s. East
winds around 15 mph.
.THURSDAY...
Not as warm. Showers and thunderstorms likely. Lows around 60.
Highs in the lower 70s. East winds around 20 mph.
.FRIDAY...
Mostly cloudy with showers and chance of thunderstorms. Lows in
the upper 50s. Highs in the mid 70s. Southeast winds around
20 mph.

$$
Forecaster...GS
Requested by...Duwayne Traversie
Type of request...WILDFIRE
.TAG 2619089.3/UNR
.DELDT 08/10/26
.FormatterVersion 2.0.0
.EMAIL redmonson@blm.gov,duwayne.traversie@bia.gov