


Spot Forecast
Issued by NWS Rapid City, SD
Issued by NWS Rapid City, SD
136 FNUS73 KUNR 161037 FWSUNR Spot Forecast for Boulder Canyon RX...SDGPC National Weather Service Rapid City SD 437 AM MDT Thu Oct 16 2025 Forecast is based on ignition time of 0600 MDT on October 16. If conditions become unrepresentative, contact the National Weather Service. .DISCUSSION...Cool and cloudy conditions will continue today, along with showers persisting through the day. Isolated thunderstorms are possible in the morning. Wetting rains are likely today. Drier weather will return on Friday, with highs in the upper 50s to lower 60s. .TODAY... Sky/weather.........Cloudy (85-95 percent). Patchy fog in the morning. Slight chance of thunderstorms in the morning. Rain showers likely through the day. Max temperature.....Around 54. Min humidity........77 percent. Wind (20 ft)........Northwest winds 5 to 15 mph. Gusts up to 25 mph. Gusty and erratic winds expected near thunderstorms. CWR.................50 percent. Mixing height.......2100 to 2600 ft agl. Transport winds.....Northwest 15 to 25 mph shifting to the west around 25 mph late in the afternoon. Smoke dispersal.....Fair. TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........98 98 98 98 98 98 98 94 91 88 83 79 Weather cov.....CHC CHC CHC LKY LKY LKY LKY LKY LKY CHC CHC CHC Weather type....RNF RNF RW RW RW RW RW RW RW RW RW RW Tstm cov........SCH SCH SCH SCH SCH SCH CWR.............50 50 50 50 50 50 50 50 50 50 50 50 Temp............46 46 47 47 48 50 50 51 53 52 51 50 RH..............100 100 96 100 96 89 89 86 77 80 80 80 20 FT wind dir..NW NW NW W NW NW W W W W W W 20 FT wind spd..5 6 6 7 8 9 9 11 11 10 10 10 20 FT wind gust.13 15 17 18 20 21 22 23 25 24 24 24 Mix hgt (kft)...0.7 0.7 0.7 1.0 1.4 1.5 1.6 1.9 2.4 2.6 2.3 1.9 Transp wind dir.NW NW NW NW NW W W W W W W W Transp wind spd.12 14 16 18 20 21 21 21 21 22 22 22 .TONIGHT... Sky/weather.........Mostly cloudy (65-75 percent). Chance of rain showers in the evening. Min temperature.....Around 41. Max humidity........96 percent. Wind (20 ft)........West winds 10 to 15 mph. Gusts up to 30 mph. CWR.................25 percent. Mixing height.......500 to 1000 ft agl. Transport winds.....West 25 to 30 mph increasing to 35 to 40 mph late in the evening. Smoke dispersal.....Poor. TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky (%).........74 71 67 64 65 65 66 66 66 66 64 63 Weather cov.....CHC CHC CHC CHC CHC CHC Weather type....RW RW RW RW RW RW Tstm cov........ CWR.............20 20 20 20 20 20 20 20 20 20 20 20 Temp............46 45 44 41 43 42 42 43 43 43 43 44 RH..............86 89 89 96 82 86 86 79 79 79 79 76 20 FT wind dir..W W W W W W W W W W W W 20 FT wind spd..9 10 12 13 13 14 13 14 14 14 14 14 20 FT wind gust.23 25 26 26 26 26 27 31 31 31 33 32 Mix hgt (kft)...1.2 0.7 0.5 0.6 0.5 0.6 0.6 0.5 0.5 0.6 0.5 0.5 Transp wind dir.W W W W W W W W W W W W Transp wind spd.22 23 24 25 29 32 35 36 36 36 37 37 .FRIDAY... Sky/weather.........Mostly sunny (40-50 percent). Max temperature.....Around 60. Min humidity........40 percent. Wind (20 ft)........West winds 10 to 15 mph with gusts to around 30 mph. CWR.................0 percent. Mixing height.......4100 to 4600 ft agl. Transport winds.....West 35 to 40 mph decreasing to around 30 mph late in the afternoon. Smoke dispersal.....Very good. TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........61 59 57 33 29 28 27 31 35 39 45 52 Weather cov..... Weather type.... Tstm cov........ CWR.............0 0 0 0 0 0 0 0 0 0 0 0 Temp............42 44 45 48 53 56 57 58 59 59 58 56 RH..............79 70 65 60 50 45 43 42 40 40 42 45 20 FT wind dir..W W W W W W W W W W W W 20 FT wind spd..13 13 13 14 14 15 15 15 15 14 12 10 20 FT wind gust.31 31 30 29 29 30 30 30 29 28 25 23 Mix hgt (kft)...0.5 0.9 1.2 1.6 2.1 2.6 3.1 3.6 4.1 4.6 3.3 2.1 Transp wind dir.W W W W W W W W W W W W Transp wind spd.38 38 38 39 39 39 39 39 38 36 32 28 $$ Forecaster...13 Requested by...Lydia Raderschadt Type of request...PRESCRIBED .TAG 2523594.2/UNR .DELDT 10/16/25 .FormatterVersion 2.0.0 .EMAIL dewey.arnold@state.sd.us,sdgpc@firenet.gov