730
FNUS73 KUNR 061735
FWSUNR

Spot Forecast for Potato Creek...USWFS - SD-PRA
National Weather Service Rapid City SD
1135 AM MDT Thu Aug 6 2026

Forecast is based on forecast start time of 1200 MDT on August 06.
If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...Near critical weather weather conditions are
expected this afternoon as a weak cool front moves through
shifting winds to the northwest late this afternoon. Highs this
afternoon will be in the upper 90s with a minimum relative
humidity around 16%.

Fair RH (~62%) recovery is expected tonight. Hot weather will
continue Friday (around 90), but it won`t be as dry (~22%) as
today. North winds will become east Friday afternoon.

Looking ahead, hot and dry weather is expected for the weekend
with highs near 100 and minimum relative humidity in the upper
teens resulting in near-critical fire weather conditions.

.REST OF TODAY...

Sky/weather.........Sunny (5-15 percent). Areas of smoke.
Max temperature.....Around 99.
Min humidity........16 percent.
Wind (20 ft)........West winds around 10 mph shifting to the
                    northwest late in the afternoon. Gusts up to 20
                    mph.
CWR.................0 percent.
Mixing height.......11300 to 11800 ft agl.
Transport winds.....West around 20 mph.
Smoke dispersal.....Excellent.

TIME (MDT)      12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........5   5   5   15  15  15
Weather cov.....ARS ARS ARS ARS ARS ARS
Weather type....SMK SMK SMK SMK SMK SMK
Tstm cov........
CWR.............0   0   0   0   0   0
Temp............93  94  95  97  97  96
RH..............27  23  21  18  16  16
20 FT wind dir..SW  W   W   W   W   NW
20 FT wind spd..10  9   7   6   6   6
20 FT wind gust.21  20  17  15  17  17
Mix hgt (kft)...6.6 9.9 11  12  12  11
Transp wind dir.SW  W   W   W   W   W
Transp wind spd.20  18  17  16  17  18

.TONIGHT...

Sky/weather.........Mostly clear (5-15 percent). Areas of smoke.
Min temperature.....Around 60.
Max humidity........62 percent.
Wind (20 ft)........Northwest winds around 10 mph. Gusts up to 20
                    mph.
CWR.................0 percent.
Mixing height.......400 to 900 ft agl.
Transport winds.....West around 20 mph shifting to the east early
                    in the evening, then shifting to the north late
                    in the evening.
Smoke dispersal.....Very good decreasing to poor.

TIME (MDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........6   6   7   8   7   5   5   7   10  12  12  9
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............95  92  86  78  75  73  71  69  67  65  63  62
RH..............18  22  26  35  37  42  45  44  42  43  50  55
20 FT wind dir..NW  N   E   SE  SW  W   NW  NW  NW  NW  NW  NW
20 FT wind spd..7   7   7   6   7   7   7   9   10  10  9   8
20 FT wind gust.18  16  16  16  16  15  14  15  17  18  17  16
Mix hgt (kft)...9.0 1.4 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.4
Transp wind dir.W   W   SE  E   NE  N   NW  NW  N   N   N   N
Transp wind spd.18  18  18  18  17  16  15  17  18  20  17  15

.FRIDAY...

Sky/weather.........Sunny (5-15 percent). Areas of smoke in the
                    afternoon.
Max temperature.....Around 90.
Min humidity........22 percent.
Wind (20 ft)........North winds around 10 mph shifting to the east
                    late in the afternoon. Gusts 20-25 mph.
CWR.................0 percent.
Mixing height.......5500 to 6000 ft agl.
Transport winds.....Northeast 15 to 20 mph shifting to the
                    southeast around 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 (%).........16  13  13  8   5   4   3   4   7   8   5   4
Weather cov.....                        ARS ARS ARS ARS ARS ARS
Weather type....                        SMK SMK SMK SMK SMK SMK
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Temp............60  62  65  68  73  78  80  83  85  87  87  87
RH..............61  60  57  54  44  36  33  28  25  23  22  22
20 FT wind dir..NW  N   N   NE  NE  NE  NE  E   E   E   E   E
20 FT wind spd..8   8   9   10  10  12  10  10  10  12  13  14
20 FT wind gust.16  16  18  18  20  20  20  20  20  21  22  24
Mix hgt (kft)...0.4 0.9 1.3 1.8 2.4 3.0 3.6 4.4 5.2 6.0 5.8 5.6
Transp wind dir.N   N   NE  NE  NE  NE  NE  E   E   E   E   SE
Transp wind spd.14  14  15  16  17  18  20  20  21  21  22  23

$$
Forecaster...EH
Requested by...Duwayne Traversie
Type of request...WILDFIRE
.TAG 2619089.0/UNR
.DELDT 08/06/26
.FormatterVersion 2.0.0
.EMAIL redmonson@blm.gov,duwayne.traversie@bia.gov