603
FNUS73 KUNR 241647
FWSUNR

Spot Forecast for Brooks...Pine Ridge Agency USWFS
National Weather Service Rapid City SD
1047 AM MDT Mon Aug 24 2026

Forecast is based on forecast start time of 1200 MDT on August 24.
If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...Warmer temperatures are expected today with a high
in the low 90s and relative humidity values dropping into the
upper 20s to low 30s. Expect lighter northerly winds through the
afternoon into the evening, around 10 mph gusting to 15 mph.

Isolated thunderstorms are possible this afternoon and evening,
with the likely timing being from 4PM thorugh 8PM. Expect
lightning, hail, and gusty, erratic outflow winds. Some of these
storms may become severe, with large hail and 60 mph wind gusts.

Good overnight RH recovery tonight into Tuesday morning (roughly 80
percent) with light northerly winds through the overnight hours
after the storms pass.

.REST OF TODAY...

Sky/weather.........Mostly sunny (25-35 percent). Chance of showers
                    and thunderstorms in the afternoon.
Max temperature.....Around 93.
Min humidity........28 percent.
Wind (20 ft)........North winds around 10 mph with gusts to around
                    15 mph. Gusty and erratic winds expected near
                    thunderstorms in the afternoon.
CWR.................15 percent.
Mixing height.......8700 to 9200 ft agl.
Transport winds.....Northwest 15 to 20 mph shifting to the north
                    late in the afternoon.
Smoke dispersal.....Very good.

TIME (MDT)      12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........11  45  45  45  45  46
Weather cov.....    CHC CHC CHC CHC CHC
Weather type....    RW  RW  RW  RW  RW
Tstm cov........    CHC CHC CHC CHC CHC
CWR.............20  20  20  20  20  20
Temp............88  90  91  91  92  90
RH..............41  37  34  31  28  30
20 FT wind dir..N   N   N   N   N   N
20 FT wind spd..8   8   8   9   9   9
20 FT wind gust.14  15  16  17  18  18
Mix hgt (kft)...3.9 5.4 6.7 9.2 7.4 6.1
Transp wind dir.W   NW  NW  NW  N   N
Transp wind spd.13  14  15  16  16  17

.TONIGHT...

Sky/weather.........Partly cloudy (40-50 percent) then becoming
                    mostly cloudy (50-60 percent) then becoming
                    partly cloudy (45-55 percent). Slight chance of
                    showers and thunderstorms in the evening.
Min temperature.....Around 62.
Max humidity........80 percent.
Wind (20 ft)........Northeast winds around 10 mph shifting to the
                    southeast late in the evening, then decreasing
                    to around 5 mph late in the evening shifting to
                    the west overnight shifting to the northwest
                    shifting to the north after 3 am. Gusts up to
                    18 mph. Gusty and erratic winds expected near
                    thunderstorms in the evening.
CWR.................0 percent.
Mixing height.......500 to 1000 ft agl.
Transport winds.....Northeast 15 to 20 mph shifting to the east
                    late in the evening, then shifting to the south
                    late in the evening shifting to the west
                    overnight shifting to the north.
Smoke dispersal.....Poor.

TIME (MDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........50  40  36  36  36  36  47  51  54  54  49  47
Weather cov.....SCH SCH SCH SCH SCH SCH
Weather type....RW  RW  RW  RW  RW  RW
Tstm cov........SCH SCH SCH SCH SCH SCH
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Temp............87  84  79  75  72  70  69  68  66  65  63  63
RH..............35  40  48  55  63  65  68  71  72  76  80  79
20 FT wind dir..N   NE  NE  SE  SE  SE  SW  W   W   NW  N   N
20 FT wind spd..9   7   6   6   5   3   3   3   3   3   5   5
20 FT wind gust.15  15  15  15  15  14  13  12  10  10  10  12
Mix hgt (kft)...3.1 0.7 0.5 0.5 0.5 0.5 0.6 0.6 0.6 0.7 0.5 0.5
Transp wind dir.N   N   NE  NE  E   S   SW  W   NW  NW  N   N
Transp wind spd.16  15  14  13  13  14  14  14  14  14  14  13

.TUESDAY...

Sky/weather.........Mostly sunny (35-45 percent). Slight chance of
                    showers and thunderstorms in the morning.
Max temperature.....Around 84.
Min humidity........30 percent.
Wind (20 ft)........North winds 5 to 10 mph with gusts to around 15
                    mph. Gusty and erratic winds expected near
                    thunderstorms in the morning.
CWR.................0 percent.
Mixing height.......6400 to 6900 ft agl.
Transport winds.....Northeast around 15 mph.
Smoke dispersal.....Good.

TIME (MDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........49  52  40  39  36  37  32  32  32  32  32  32
Weather cov.....SCH SCH SCH SCH SCH SCH
Weather type....RW  RW  RW  RW  RW  RW
Tstm cov........SCH SCH SCH SCH SCH SCH
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Temp............63  64  67  70  72  75  77  79  80  82  83  82
RH..............76  70  63  55  49  42  37  34  32  30  30  30
20 FT wind dir..N   N   N   N   NE  NE  NE  N   N   N   N   N
20 FT wind spd..5   5   6   6   6   7   7   7   6   6   6   6
20 FT wind gust.10  12  13  14  14  14  15  15  14  14  14  14
Mix hgt (kft)...0.4 0.4 0.7 1.2 2.1 2.9 3.7 4.8 5.8 6.9 6.1 5.4
Transp wind dir.N   NE  NE  NE  NE  NE  NE  NE  N   N   N   N
Transp wind spd.13  13  12  12  13  13  13  13  13  12  12  12

$$
Forecaster...CS
Requested by...Colynn Condon
Type of request...WILDFIRE
.TAG 2620269.2/UNR
.DELDT 08/24/26
.FormatterVersion 2.0.0
.EMAIL adrian.yellowkidney@bia.gov,william.youngbear@bia.gov,berneyrulz2002@yahoo.com,colynn.condon@bia.gov,marjoe.janis@bia.gov