Spot Forecast
Issued by NWS Rapid City, SD
Issued by NWS Rapid City, SD
595
FNUS73 KUNR 281830
FWSUNR
Spot Forecast for 18 Mile RX...USFS
National Weather Service Rapid City SD
1230 PM MDT Wed Oct 28 2026
Forecast is based on ignition time of 1400 MDT on October 28.
If conditions become unrepresentative, contact the National Weather
Service.
.DISCUSSION...Weak high pressure will cover the region Thursday.
Expect sunny skies with light morning winds becoming
west/northwest at 5 to 10 mph by afternoon. A couple gusts to 15
mph are possible with peak afternoon heating. Highs will be around
60 with min RH of 30 to 35 percent, with fair to good smoke
dispersal. Expect good RH recovery Thursday night with easterly
winds of 5 to 10 mph. Winds will become southeast Friday and
increase some. Expect southeast winds of 10 to 20 mph by
afternoon.
.REST OF TODAY...
Sky/weather.........Sunny (0-5 percent).
Max temperature.....Around 56.
Min humidity........32 percent.
Wind (20 ft)........Northwest winds 5 to 10 mph with gusts to
around 20 mph.
CWR.................0 percent.
Mixing height.......5600 to 6100 ft agl.
Transport winds.....West 10 to 20 mph.
Smoke dispersal.....Good.
TIME (MDT) 2PM 3PM 4PM 5PM
Sky (%).........1 2 2 2
Weather cov.....
Weather type....
Tstm cov........
CWR.............0 0 0 0
Temp............55 55 53 50
RH..............33 32 33 36
20 FT wind dir..W W NW NW
20 FT wind spd..9 8 6 5
20 FT wind gust.20 20 17 12
Mix hgt (kft)...5.1 6.1 4.2 2.1
Transp wind dir.W W W W
Transp wind spd.18 16 13 9
.TONIGHT...
Sky/weather.........Mostly clear (5-15 percent).
Min temperature.....Around 38.
Max humidity........68 percent.
Wind (20 ft)........Northwest winds around 5 mph shifting the east and
becoming 5 to 10 mph.
CWR.................0 percent.
Mixing height.......400 to 900 ft agl.
Transport winds.....Northwest around 10 mph shifting to the
northeast early in the evening, then shifting
to the east late in the evening shifting to the
southeast overnight shifting to the northeast.
Smoke dispersal.....Poor.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........2 4 5 6 6 13 14 13 16 20 22 19
Weather cov.....
Weather type....
Tstm cov........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
Temp............45 42 40 39 39 38 38 38 38 39 38 38
RH..............43 48 54 56 60 64 64 67 66 68 66 67
20 FT wind dir..NW NE NE NE NE E E E E E SE SE
20 FT wind spd..3 3 5 6 5 5 3 3 2 2 2 2
20 FT wind gust.7 8 10 13 13 12 10 9 9 9 8 8
Mix hgt (kft)...0.5 0.4 0.4 0.4 0.5 0.5 0.5 0.5 0.5 0.5 0.4 0.4
Transp wind dir.W NW NE E E E E E SE S SE NE
Transp wind spd.6 7 9 12 12 10 10 10 9 9 8 6
.THURSDAY...
Sky/weather.........Sunny (15-25 percent).
Max temperature.....Around 60.
Min humidity........32 percent.
Wind (20 ft)........North winds around 5 mph shifting to the
west to northwest at 5 to 10 mph.
CWR.................0 percent.
Mixing height.......3900 to 4400 ft agl.
Transport winds.....North 5 to 10 mph shifting to the west 10 to 20
mph in the late morning and afternoon, then
shifting to the north around 10 mph late in the
afternoon.
Smoke dispersal.....Good.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........14 13 20 8 7 7 6 8 15 21 26 34
Weather cov.....
Weather type....
Tstm cov........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
Temp............38 38 39 43 46 50 53 55 58 59 57 53
RH..............67 67 64 60 51 43 41 38 33 32 32 41
20 FT wind dir..NE N N NW W W W W W W W W
20 FT wind spd..1 2 2 2 3 5 6 7 7 7 5 2
20 FT wind gust.7 7 7 8 10 13 16 16 17 17 15 9
Mix hgt (kft)...0.4 0.4 0.4 0.4 1.1 1.8 2.5 3.1 3.8 4.4 3.0 1.6
Transp wind dir.N N NW NW NW W W W W W NW N
Transp wind spd.6 5 5 6 9 12 14 15 16 15 12 8
$$
Forecaster...JC
Requested by...Hayden Hoelscher
Type of request...PRESCRIBED
.TAG 2624587.2/UNR
.DELDT 10/28/26
.FormatterVersion 2.0.0
.EMAIL hayden.hoelscher@usda.gov,todd.hoover@usda.gov,christopher.bennett@usda.gov