266
FNUS73 KUNR 261214
FWSUNR
SPOT FORECAST FOR MIX...UFSF
NATIONAL WEATHER SERVICE RAPID CITY SD
614 AM MDT SUN JUL 26 2026
FORECAST IS BASED ON FORECAST START TIME OF 0600 MDT ON JULY 26.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
..HEAT ADVISORY IN EFFECT UNTIL 8 PM MDT THIS EVENING
DISCUSSION
ANOTHER HOT DAY IS EXPECTED TODAY. AFTERNOON
TEMPERATURES WILL TOP OUT NEAR 100. WINDS WILL BE AROUND 5 TO 15
MPH WITH GUSTS UPWARDS OF 20 MPH. DURING THE DAY, WIND DIRECTION
WILL BE OUT OF THE NORTH TO NORTHWEST BEFORE SWINGING TO THE NORTH
TO NORTHEAST FOR TONIGHT.
THUNDERSTORMS ARE ALSO POSSIBLE LATER TODAY. ISOLATED STORM
INITIATION IN AND AROUND THE BLACK HILLS WILL START AROUND 1 TO 3
PM. THEN ANOTHER ROUND OF PASSING STORMS IS LIKELY LATE THIS
AFTERNOON AND EVENING, MAINLY AFTER 6PM, FROM STORMS THAT WILL
DEVELOP IN NORTH-CENTRAL WYOMING.
THE BIGGEST THREATS WILL BE DRY LIGHTNING AND POTENTIAL FIRE
STARTS, AND GUSTY THUNDERSTORM WINDS IN EXCESS OF 50 MPH.
VERY SIMILAR WEATHER IS LIKELY TOMORROW AND AGAIN TUESDAY. HIGHS
WILL BE IN THE MID TO UPPER 90S WITH THUNDERSTORM CHANCES IN THE
AFTERNOON. WINDS WILL BE OUT OF SOUTH TO SOUTHEAST TOMORROW AND
TUESDAY AT AROUND 10 TO 15 MPH WITH GUSTS NEAR 20 MPH. LIGHTER
EASTERLY WINDS MONDAY NIGHT.
TODAY
SKY/WEATHER.........SUNNY (15-25 PERCENT). SLIGHT CHANCE OF SHOWERS
AND THUNDERSTORMS IN THE AFTERNOON.
MAX TEMPERATURE.....AROUND 101.
MIN HUMIDITY........16 PERCENT.
WIND (20 FT)........NORTH WINDS AROUND 5 MPH SHIFTING TO THE
NORTHWEST WITH GUSTS TO AROUND 21 MPH. GUSTY
AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS
IN THE AFTERNOON.
CWR.................0 PERCENT.
MIXING HEIGHT.......8800 TO 9300 FT AGL INCREASING TO 13100 TO
13600 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....NORTHWEST 10 TO 20 MPH INCREASING TO AROUND 20
MPH IN THE AFTERNOON, THEN SHIFTING TO THE
NORTHEAST 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 (%).........22 14 6 4 5 9 29 30 30 31 31 31
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 0 0 0
TEMP............75 77 80 84 88 91 94 96 97 99 99 98
RH..............48 45 40 35 29 25 21 18 18 16 17 18
20 FT WIND DIR..N N NW NW NW NW NW NW NW NW NW N
20 FT WIND SPD..3 5 6 8 9 9 10 10 10 9 9 8
20 FT WIND GUST.9 10 13 15 17 18 20 20 20 20 21 20
MIX HGT (KFT)...0.5 0.4 0.7 1.3 2.9 6.2 9.3 11 12 14 12 11
TRANSP WIND DIR.N N NW NW NW NW NW NW NW NW N NE
TRANSP WIND SPD.8 9 12 14 16 17 18 18 17 17 17 18
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT) THEN BECOMING
MOSTLY CLOUDY (60-70 PERCENT) THEN BECOMING
PARTLY CLOUDY (35-45 PERCENT). CHANCE OF
THUNDERSTORMS EARLY IN THE EVENING. CHANCE OF
SHOWERS IN THE EVENING. SLIGHT CHANCE OF
THUNDERSTORMS LATE IN THE EVENING.
MIN TEMPERATURE.....AROUND 74.
MAX HUMIDITY........43 PERCENT.
WIND (20 FT)........NORTHEAST WINDS AROUND 10 MPH WITH GUSTS TO
AROUND 20 MPH SHIFTING TO THE NORTH WITH GUSTS
TO AROUND 16 MPH LATE IN THE EVENING, THEN
SHIFTING TO THE NORTHEAST WITH GUSTS TO AROUND
15 MPH OVERNIGHT. GUSTY AND ERRATIC WINDS
EXPECTED NEAR THUNDERSTORMS EARLY IN THE
EVENING. GUSTY AND ERRATIC WINDS EXPECTED NEAR
THUNDERSTORMS LATE IN THE EVENING.
CWR.................20 PERCENT.
MIXING HEIGHT.......500 TO 1000 FT AGL.
TRANSPORT WINDS.....NORTHEAST 15 TO 25 MPH INCREASING TO 20 TO 30
MPH OVERNIGHT.
SMOKE DISPERSAL.....FAIR DECREASING TO POOR EARLY IN THE EVENING.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........22 20 38 63 68 67 69 33 44 47 37 39
WEATHER COV.....CHC CHC CHC CHC CHC CHC
WEATHER TYPE....RW RW RW RW RW RW
TSTM COV........CHC CHC CHC SCH SCH SCH
CWR.............20 20 20 20 20 20 20 20 20 20 20 20
TEMP............95 92 89 86 84 82 81 81 80 78 77 76
RH..............23 24 26 28 31 32 33 33 33 36 37 40
20 FT WIND DIR..NE NE E E NW N NE NE E E E E
20 FT WIND SPD..10 9 9 9 9 9 9 8 7 7 6 5
20 FT WIND GUST.20 17 16 16 16 16 15 14 12 12 10 9
MIX HGT (KFT)...6.8 3.0 0.6 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
TRANSP WIND DIR.NE NE NE NE NE NE NE NE NE E E E
TRANSP WIND SPD.18 16 15 15 18 23 26 24 21 17 17 17
MONDAY
SKY/WEATHER.........PARTLY SUNNY (60-70 PERCENT) THEN BECOMING
CLOUDY (85-95 PERCENT) THEN BECOMING PARTLY
SUNNY (65-75 PERCENT). SLIGHT CHANCE OF
THUNDERSTORMS EARLY IN THE AFTERNOON. CHANCE OF
SHOWERS IN THE AFTERNOON. CHANCE OF
THUNDERSTORMS LATE IN THE AFTERNOON.
MAX TEMPERATURE.....AROUND 95.
MIN HUMIDITY........24 PERCENT.
WIND (20 FT)........NORTHEAST WINDS 5 TO 10 MPH SHIFTING TO THE
SOUTHEAST WITH GUSTS TO AROUND 17 MPH EARLY IN
THE MORNING, THEN INCREASING TO 10 TO 15 MPH
WITH GUSTS TO AROUND 23 MPH LATE IN THE
MORNING. GUSTY AND ERRATIC WINDS EXPECTED NEAR
THUNDERSTORMS EARLY IN THE AFTERNOON. GUSTY AND
ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS LATE
IN THE AFTERNOON.
CWR.................35 PERCENT.
MIXING HEIGHT.......8100 TO 8600 FT AGL INCREASING TO 10100 TO
10600 FT AGL LATE IN THE AFTERNOON.
TRANSPORT WINDS.....EAST AROUND 20 MPH SHIFTING TO THE SOUTHEAST IN
THE LATE MORNING AND 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 (%).........60 50 55 61 60 50 48 81 90 65 66 70
WEATHER COV..... CHC CHC CHC CHC CHC CHC
WEATHER TYPE.... RW RW RW RW RW RW
TSTM COV........ SCH SCH SCH CHC CHC CHC
CWR.............30 30 30 30 30 30 30 30 30 30 30 30
TEMP............74 76 80 82 85 88 90 92 93 91 90 88
RH..............43 42 36 34 31 29 26 25 24 27 30 31
20 FT WIND DIR..NE NE E SE SE S S S S SE SE SE
20 FT WIND SPD..5 6 6 8 10 12 13 13 12 10 10 12
20 FT WIND GUST.9 10 12 14 17 21 22 22 22 21 22 23
MIX HGT (KFT)...0.5 0.9 1.4 1.8 2.7 3.6 4.5 6.5 8.6 11 7.7 4.7
TRANSP WIND DIR.E E SE SE SE SE SE SE SE SE SE SE
TRANSP WIND SPD.18 18 17 17 18 20 21 21 20 18 20 22
FORECASTER...GS
REQUESTED BY...RYAN FLYNN
TYPE OF REQUEST...WILDFIRE
.TAG 2618272.0/UNR
.DELDT 07/26/26
.FORMATTERVERSION 2.0.0
.EMAIL BRENNAN.WITT@USDA.GOV,SDGPC@FIENET.GOV
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