292
FNUS73 KUNR 152228
FWSUNR
SPOT FORECAST FOR MW...SDGPC
NATIONAL WEATHER SERVICE RAPID CITY SD
428 PM MDT FRI MAY 15 2026
FORECAST IS BASED ON FORECAST START TIME OF 1600 MDT ON MAY 15.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
NEAR-CRITICAL FIRE WEATHER CONDITIONS WILL CONTINUE
THROUGH SATURDAY. RELATIVELY LIGHT WINDS ARE EXPECTED THROUGH
TONIGHT. SOUTHEAST WINDS WILL PICK UP SATURDAY WITH GUSTS AROUND
20 MPH. THE MINIMUM RELATIVE HUMIDITY WILL BOTTOM OUT AROUND 10%
THIS AFTERNOON WITH POOR RECOVERY TONIGHT AROUND 48%. THE MINIMUM
RELATIVE HUMIDITY SATURDAY WILL BE AROUND 11%. DRY WEATHER IS
EXPECTED THROUGH SATURDAY AFTERNOON.
LOOKING AHEAD TO SUNDAY AND MONDAY, INCREASING CHANCES FOR
SHOWERS AND WETTING PRECIPITATION ARE EXPECTED WITH COOLER
TEMPERATURES. TEMPERATURES MAY BE COOL ENOUGH FOR A BIT OF SNOW
MONDAY.
REST OF TODAY
SKY/WEATHER.........SUNNY (5-15 PERCENT).
MAX TEMPERATURE.....AROUND 77.
MIN HUMIDITY........9 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 5-10 MPH.
CWR.................0 PERCENT.
MIXING HEIGHT.......11700 TO 12200 FT AGL.
TRANSPORT WINDS.....WEST AROUND 20 MPH.
SMOKE DISPERSAL.....EXCELLENT.
TIME (MDT) 4PM 5PM
SKY (%).........8 8
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0
TEMP............74 76
RH..............10 9
20 FT WIND DIR..NW NW
20 FT WIND SPD..7 7
20 FT WIND GUST.15 17
MIX HGT (KFT)...12 12
TRANSP WIND DIR.W W
TRANSP WIND SPD.20 17
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (20-30 PERCENT).
MIN TEMPERATURE.....AROUND 40.
MAX HUMIDITY........48 PERCENT.
WIND (20 FT)........NORTH WINDS 5-10 MPH BECOMING EAST
AROUND 5 MPH.
CWR.................0 PERCENT.
MIXING HEIGHT.......400 TO 900 FT AGL.
TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH SHIFTING TO THE NORTH
EARLY IN THE EVENING, THEN SHIFTING TO THE EAST
5 TO 10 MPH OVERNIGHT.
SMOKE DISPERSAL.....POOR.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........7 19 16 38 39 26 9 6 7 15 16 10
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............76 73 67 63 60 57 53 51 50 46 45 43
RH..............9 10 14 18 22 28 32 34 36 40 41 45
20 FT WIND DIR..N N N N N N N N N E E E
20 FT WIND SPD..7 7 8 8 8 7 6 5 3 2 2 2
20 FT WIND GUST.15 16 15 16 17 14 12 9 8 7 7 6
MIX HGT (KFT)...8.3 4.4 0.6 0.6 0.7 0.6 0.5 0.5 0.5 0.5 0.4 0.4
TRANSP WIND DIR.W NW N N N N N NE NE E E E
TRANSP WIND SPD.15 15 15 15 14 13 10 9 8 7 6 5
SATURDAY
SKY/WEATHER.........MOSTLY SUNNY (30-40 PERCENT).
MAX TEMPERATURE.....AROUND 80.
MIN HUMIDITY........11 PERCENT.
WIND (20 FT)........EAST WINDS AROUND 5 MPH BECOMING
SOUTHEAST 5 TO 15 MPH WITH GUSTS AROUND 20
MPH.
CWR.................0 PERCENT.
MIXING HEIGHT.......8800 TO 9300 FT AGL INCREASING TO 11900 TO
12400 FT AGL LATE IN THE AFTERNOON.
TRANSPORT WINDS.....EAST 10 TO 15 MPH INCREASING TO SOUTHEAST 25 TO
35 MPH EARLY IN THE MORNING, THEN SHIFTING TO
THE SOUTH AROUND 25 MPH LATE IN THE AFTERNOON.
SMOKE DISPERSAL.....GOOD INCREASING TO EXCELLENT.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........24 21 29 28 40 32 38 49 42 26 28 38
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............41 46 50 56 63 68 70 74 77 78 79 80
RH..............48 40 36 30 24 20 18 15 12 11 11 11
20 FT WIND DIR..E SE SE SE SE SE SE SE S SE SE SE
20 FT WIND SPD..2 5 7 12 12 13 13 12 9 9 10 12
20 FT WIND GUST.6 10 13 20 21 22 22 21 21 14 16 17
MIX HGT (KFT)...0.4 0.5 2.3 3.4 4.0 4.4 5.9 7.7 9.3 12 10 8.4
TRANSP WIND DIR.E E SE SE SE SE S S S S S SE
TRANSP WIND SPD.7 15 25 32 33 31 28 25 23 22 23 24
FORECASTER...EH
REQUESTED BY...KATE BEARDALL
TYPE OF REQUEST...WILDFIRE
.TAG 2613764.0/UNR
.DELDT 05/15/26
.FORMATTERVERSION 2.0.0
.EMAIL MADISON.TOLLEY@USDA.GOV,SDGPC@FIRENET.GOV,WCFIRE@RTCONNECT.NET
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