182
FNUS73 KUNR 140151
FWSUNR

Spot Forecast for Surveyor...Great Plains Dispatch
National Weather Service Rapid City SD
751 PM MDT Sun Jul 13 2025

Forecast is based on forecast start time of 2000 MDT on July 13.
If conditions become unrepresentative, contact the National Weather
Service.

Discussion...Dry weather is expected tonight and much of Monday.
Easterly winds will continue this evening, then weaken after
midnight, possibly becoming southeasterly and/or terrain driven.
After a quiet morning, thunderstorms will develop in the mid to
late afternoon. Storms are expected to move east of the area by
900 pm Monday.


.REST OF TONIGHT...

Sky/weather.........Mostly clear (10-20 percent).
Min temperature.....Around 59.
Max humidity........57 percent.
Wind (20 ft)........East winds around 10 mph shifting to the
                    southeast after 3 am, then becoming
                    terrain-driven. Gusts up to 18 mph until
                    3 am.
CWR.................0 percent.
Mixing height.......400 to 900 ft agl.
Transport winds.....East around 15 mph.
Smoke dispersal.....Poor.

TIME (MDT)      8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........9   4   10  11  8   20  19  22  23  17
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0
Temp............70  67  65  63  62  61  61  60  60  60
RH..............49  54  56  57  56  53  50  51  51  51
20 FT wind dir..E   E   E   E   SE  SE  SE  SE  S   S
20 FT wind spd..6   7   7   7   7   6   6   6   6   6
20 FT wind gust.15  17  16  16  10  15  15  15  14  14
Mix hgt (kft)...0.7 0.5 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4
Transp wind dir.E   E   E   E   E   E   E   SE  SE  SE
Transp wind spd.14  15  15  15  15  15  14  14  13  12

.MONDAY...

Sky/weather.........Sunny (20-30 percent) then becoming partly
                    sunny (50-60 percent). Chance of showers and
                    thunderstorms in the afternoon.
Max temperature.....Around 88.
Min humidity........22 percent.
Wind (20 ft)........Southwest winds around 10 mph with gusts to
                    around 20 mph. Gusty and erratic winds expected
                    near thunderstorms in the afternoon.
CWR.................20 percent.
Mixing height.......9700 to 10200 ft agl increasing to 11200 to
                    11700 ft agl late in the afternoon.
Transport winds.....South around 15 mph shifting to the southwest
                    in the late morning and afternoon, then
                    shifting to the southeast late in the
                    afternoon.
Smoke dispersal.....Good increasing to excellent in the afternoon.

TIME (MDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........23  5   9   6   6   17  7   12  6   18  40  55
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............59  63  68  72  78  81  84  85  86  87  85  83
RH..............55  54  49  43  35  32  28  26  24  22  24  27
20 FT wind dir..S   S   SW  SW  SW  SW  SW  SW  SW  S   S   S
20 FT wind spd..6   6   6   6   7   7   8   8   8   8   8   8
20 FT wind gust.13  14  14  15  15  16  17  18  18  18  17  17
Mix hgt (kft)...0.4 0.5 0.8 1.5 2.2 3.3 7.1 8.6 10  12  9.1 6.5
Transp wind dir.SE  SE  S   SW  SW  SW  SW  SW  W   W   SW  SE
Transp wind spd.12  12  12  13  14  14  15  16  16  16  16  15

.MONDAY NIGHT...

Sky/weather.........Mostly cloudy (60-70 percent) then becoming
                    partly cloudy (40-50 percent). Chance of
                    showers and thunderstorms in the evening, then
                    slight chance of showers and thunderstorms
                    overnight.
Min temperature.....Around 57.
Max humidity........67 percent.
Wind (20 ft)........East winds around 10 mph in the evening,
                    then becoming light and terrain driven
                    overnight. Gusts up to 15 mph in the evening.
                    Gusty and erratic winds expected near
                    thunderstorms.
CWR.................30 percent.
Mixing height.......300 to 800 ft agl.
Transport winds.....East 15 to 20 mph shifting to the south early
                    in the evening, then shifting to the west 10 to
                    15 mph overnight.
Smoke dispersal.....Poor.

TIME (MDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........67  70  58  75  65  59  52  48  45  41  41  40
Weather cov.....CHC CHC CHC CHC CHC CHC SCH SCH SCH SCH SCH SCH
Weather type....RW  RW  RW  RW  RW  RW  RW  RW  RW  RW  RW  RW
Tstm cov........CHC CHC CHC CHC CHC CHC SCH SCH SCH SCH SCH SCH
CWR.............30  30  30  30  30  30  30  30  30  30  30  30
Temp............78  73  69  66  64  63  63  63  62  62  61  60
RH..............35  46  51  58  60  62  62  62  62  62  65  67
20 FT wind dir..N   E   E   E   SE  S   S   SW  NW  N   N   N
20 FT wind spd..7   6   6   6   6   6   6   6   6   6   6   6
20 FT wind gust.16  15  15  15  15  14  14  14  13  13  13  13
Mix hgt (kft)...3.9 2.7 1.5 0.3 0.3 0.3 0.4 0.4 0.4 0.3 0.3 0.3
Transp wind dir.E   E   S   S   S   S   S   SW  W   W   W   NW
Transp wind spd.15  16  17  17  17  15  14  13  12  12  10  10

$$
Forecaster...13
Requested by...Dale Ruhoff
Type of request...WILDFIRE
.TAG 2517941.0/UNR
.DELDT 07/13/25
.FormatterVersion 2.0.0
.EMAIL sdgpc@firenet.gov