500
FNUS73 KUNR 221008
FWSUNR

Spot Forecast for West Coal Creek Fire...Campbell County Fire Department
National Weather Service Rapid City SD
408 AM MDT Sat Aug 22 2026

Forecast is based on forecast start time of 0600 MDT on August 22.
If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...Elevated fire weather conditions expected today,
minimum relative humidity falling to only 30 percent. Light and
variable winds this morning will give way to breezy southeasterly
winds throughout the afternoon: sustained 10 to 15 mph with gusts
to 25 mph.

Overnight RH recovery will be good (~80%) with chance of showers
and thunderstorms after 1700, some of which may be strong to
severe. The main threats will be large hail; gusty, erratic winds,
and lightning.

.TODAY...

Sky/weather.........Partly sunny (60-70 percent).
Max temperature.....Around 91.
Min humidity........30-34 percent.
Wind (20 ft)........Southeast winds 10 to 15 mph shifting to the
                    south late in the afternoon. Gusts up to 25
                    mph.
CWR.................0 percent.
Mixing height.......6700 to 7200 ft agl.
Transport winds.....Southeast 15 to 25 mph.
Smoke dispersal.....Good increasing to very good in the afternoon.

TIME (MDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........66  78  70  61  56  58  59  65  68  68  71  73
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Temp............63  63  66  72  79  82  85  87  88  90  91  90
RH..............67  68  64  55  45  41  39  36  34  32  31  32
20 FT wind dir..E   SE  SE  SE  SE  SE  SE  SE  SE  SE  SE  S
20 FT wind spd..7   8   9   9   9   12  13  13  14  14  14  14
20 FT wind gust.14  15  16  17  17  20  21  23  24  25  25  23
Mix hgt (kft)...0.5 0.5 0.7 1.4 2.3 3.8 5.2 6.0 6.3 7.2 7.1 6.3
Transp wind dir.E   E   SE  SE  SE  SE  SE  SE  SE  S   S   S
Transp wind spd.14  15  16  18  18  20  20  21  22  22  23  23

.TONIGHT...

Sky/weather.........Mostly cloudy (65-75 percent) then becoming
                    partly cloudy (35-45 percent). Chance of
                    showers and thunderstorms in the evening.
Min temperature.....Around 65.
Max humidity........80-85 percent.
Wind (20 ft)........Southeast winds around 15 mph with gusts to
                    around 23 mph shifting to the south with gusts
                    to around 17 mph. Gusty and erratic winds
                    expected near thunderstorms in the evening.
CWR.................20 percent.
Mixing height.......400 to 900 ft agl.
Transport winds.....Southeast 25 to 30 mph shifting to the south 15
                    to 20 mph after 3 am.
Smoke dispersal.....Poor.

TIME (MDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........83  86  82  78  64  63  61  57  46  39  33  30
Weather cov.....CHC CHC CHC CHC CHC CHC
Weather type....RW  RW  RW  RW  RW  RW
Tstm cov........CHC CHC CHC CHC CHC CHC
CWR.............20  20  20  20  20  20  20  20  20  20  20  20
Temp............87  84  80  78  76  74  73  72  71  68  66  65
RH..............35  40  45  50  54  59  62  64  66  73  78  81
20 FT wind dir..S   SE  SE  E   SE  SE  SE  SE  S   S   S   S
20 FT wind spd..14  13  13  13  12  12  10  9   9   8   7   6
20 FT wind gust.23  23  22  21  21  22  21  18  17  16  13  10
Mix hgt (kft)...3.8 2.5 0.9 0.6 0.6 0.6 0.6 0.6 0.6 0.5 0.5 0.4
Transp wind dir.S   SE  SE  SE  SE  S   S   S   S   S   S   SW
Transp wind spd.23  23  23  23  25  26  28  25  21  17  15  13

$$
Forecaster...SE
Requested by...Travis Wickwire
Type of request...WILDFIRE
.TAG 2620074.3/UNR
.DELDT 08/22/26
.FormatterVersion 2.0.0
.EMAIL bryanb@campbellcofirewy.gov,travisw@campbellcofirewy.gov