634
FNUS73 KUNR 281431
FWSUNR
SPOT FORECAST FOR JACKSON NARROWS...GREAT PLAINS DISPATCH
NATIONAL WEATHER SERVICE RAPID CITY SD
831 AM MDT TUE JUL 28 2026
FORECAST IS BASED ON FORECAST START TIME OF 0900 MDT ON JULY 28.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
HOT AND UNSETTLED WEATHER IS EXPECTED THIS WEEK.
HIGH TEMPERATURES TODAY WILL BE IN THE MID 90S WITH UPPER 90S
WEDNESDAY. MINIMUM RELATIVE HUMIDITY TODAY WILL BE AROUND 30
PERCENT TODAY AND WEDNESDAY. NORTHERLY WINDS TODAY WILL BECOME
EAST TONIGHT AND THEN SOUTHEAST WEDNESDAY. SPEEDS WILL AVERAGE
10-20 MPH WITH A FEW HIGHER GUSTS, ESPECIALLY WEDNESDAY.
THUNDERSTORMS CHANCES DEVELOP THIS AFTERNOON, ESPECIALLY AFTER 300
PM, ENDING THIS EVENING, LIKELY BY 900 PM. ANY THUNDERSTORM MAY
HAVE GUSTY, ERRATIC WINDS AS WELL AS DEADLY LIGHTNING.
THUNDERSTORM CHANCES WEDNESDAY DURING THE DAY WILL BE LIMITED,
BUT DO PICK UP AGAIN WEDNESDAY EVENING.
TODAY
SKY/WEATHER.........SUNNY (15-25 PERCENT). SLIGHT CHANCE OF SHOWERS
AND THUNDERSTORMS IN THE AFTERNOON. PATCHY
SMOKE LATE IN THE AFTERNOON.
MAX TEMPERATURE.....AROUND 94.
MIN HUMIDITY........30 PERCENT.
WIND (20 FT)........NORTHEAST WINDS 5 TO 15 MPH WITH GUSTS AROUND
20 MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR
THUNDERSTORMS IN THE AFTERNOON.
CWR.................0 PERCENT.
MIXING HEIGHT.......7900 TO 8400 FT AGL.
TRANSPORT WINDS.....WEST 10 TO 15 MPH SHIFTING TO THE NORTHEAST 15
TO 25 MPH LATE IN THE MORNING, THEN SHIFTING TO
THE EAST AROUND 25 MPH LATE IN THE AFTERNOON.
SMOKE DISPERSAL.....GOOD INCREASING TO VERY GOOD LATE IN THE
AFTERNOON.
TIME (MDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........31 28 23 13 11 11 27 19 21
WEATHER COV..... SCH SCH SCH SCH SCH SCH
WEATHER TYPE.... RW RW RW RW RW RW
TSTM COV........ SCH SCH SCH SCH SCH SCH
CWR.............0 0 0 0 0 0 0 0 0
TEMP............76 80 83 86 89 92 92 92 93
RH..............67 57 51 46 42 38 34 32 30
20 FT WIND DIR..NW NE NE NE NE NE NE NE NE
20 FT WIND SPD..6 7 8 9 10 12 13 13 14
20 FT WIND GUST.12 14 15 18 18 21 21 22 22
MIX HGT (KFT)...1.7 2.7 3.8 5.1 6.2 7.2 8.4 6.5 5.9
TRANSP WIND DIR.W NW N NE NE NE NE E E
TRANSP WIND SPD.9 12 14 16 17 20 20 21 21
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (20-30 PERCENT). SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS IN THE EVENING.
PATCHY SMOKE IN THE EVENING AND OVERNIGHT.
MIN TEMPERATURE.....AROUND 67.
MAX HUMIDITY........84 PERCENT.
WIND (20 FT)........EAST WINDS 5 TO 15 MPH WITH GUSTS TO AROUND 20
MPH SHIFTING TO THE SOUTHEAST LATE.
GUSTY AND ERRATIC WINDS EXPECTED NEAR
THUNDERSTORMS IN THE EVENING.
CWR.................0 PERCENT.
MIXING HEIGHT.......400 TO 900 FT AGL.
TRANSPORT WINDS.....SOUTHEAST AROUND 20 MPH SHIFTING TO THE SOUTH
10 TO 15 MPH IN THE LATE EVENING AND OVERNIGHT,
THEN SHIFTING TO THE SOUTHWEST 5 TO 10 MPH
OVERNIGHT.
SMOKE DISPERSAL.....POOR.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........13 11 20 15 9 12 23 16 28 25 45 27
WEATHER COV.....SCH SCH SCH SCH SCH SCH PTY PTY PTY
WEATHER TYPE....RW RW RW RW RW RW SMK SMK SMK
TSTM COV........SCH SCH SCH SCH SCH SCH
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............90 89 85 81 78 77 76 75 73 71 70 69
RH..............38 39 45 53 60 60 62 66 71 76 78 81
20 FT WIND DIR..E E NE E E E E E E SE SE SE
20 FT WIND SPD..13 12 10 9 7 5 5 3 3 3 3 3
20 FT WIND GUST.20 17 17 15 12 9 8 7 6 6 6 6
MIX HGT (KFT)...5.5 3.9 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.4 0.4
TRANSP WIND DIR.E SE SE S S S S SW SW W SW SW
TRANSP WIND SPD.20 18 16 15 14 12 10 9 7 6 5 5
WEDNESDAY
SKY/WEATHER.........SUNNY (20-30 PERCENT) THEN BECOMING PARTLY
SUNNY (55-65 PERCENT).
MAX TEMPERATURE.....AROUND 98.
MIN HUMIDITY........30 PERCENT.
WIND (20 FT)........SOUTHEAST WINDS AROUND 5 MPH INCREASING TO
AROUND 15 MPH WITH GUSTS TO AROUND 25 MPH.
CWR.................0 PERCENT.
MIXING HEIGHT.......9400 TO 9900 FT AGL.
TRANSPORT WINDS.....SOUTH 5 TO 15 MPH INCREASING TO SOUTHEAST 20 TO
25 MPH LATE IN THE MORNING.
SMOKE DISPERSAL.....GOOD INCREASING TO EXCELLENT IN THE AFTERNOON.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........26 34 32 19 14 25 32 18 27 55 64 52
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............68 71 76 79 86 89 92 95 96 96 98 95
RH..............84 81 71 64 51 47 40 36 33 33 30 33
20 FT WIND DIR..SE SE SE SE SE SE SE SE SE SE SE SE
20 FT WIND SPD..2 3 5 6 9 10 12 12 13 14 14 15
20 FT WIND GUST.6 6 8 10 15 17 21 22 23 25 25 25
MIX HGT (KFT)...0.4 1.0 1.6 2.2 3.7 5.2 6.7 7.8 8.8 9.9 8.0 6.1
TRANSP WIND DIR.SW S S S S SE SE SE SE SE SE E
TRANSP WIND SPD.5 6 7 9 13 16 20 22 23 23 24 24
FORECASTER...EH
REQUESTED BY...DALE RUHOFF
TYPE OF REQUEST...WILDFIRE
.TAG 2618430.1/UNR
.DELDT 07/28/26
.FORMATTERVERSION 2.0.0
.EMAIL SDGPC@FIRENET.GOV,CHRISTOPHER.BENNETT@USDA.GOV
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