351
FNUS73 KUNR 081553
FWSUNR
SPOT FORECAST FOR POTATO CREEK...USWFS - SD-PRA
NATIONAL WEATHER SERVICE RAPID CITY SD
953 AM MDT SAT AUG 8 2026
FORECAST IS BASED ON FORECAST START TIME OF 1124 MDT ON AUGUST 08.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
NEAR CRITICAL FIRE WEATHER CONDITIONS ARE EXPECTED
THIS AFTERNOON WITH HUMIDITIES DROPPING TO NEAR 15 TO 17%.
SOUTHERLY TO SOUTHWESTERLY WINDS WILL BE AROUND 5 TO 15 MPH WITH
GUSTS NEARING 25 MPH. AFTERNOON TEMPERATURES WILL REACH NEAR 100
DEGREES UNDER MOSTLY SUNNY SKIES.
A PASSING COOL FRONT THIS EVENING WILL BRING CHANCES FOR SHOWERS
AND THUNDERSTORMS, MAINLY BETWEEN 7PM AND MIDNIGHT. LIGHTNING AND
GUSTY WINDS ARE LIKELY NEAR ANY STORMS THAT TRACK THROUGH THE
AREA. ONCE THE STORMS TRACK THROUGH, WINDS WILL SWING TO THE WEST
AT AROUND 5 TO 10 MPH. OVERNIGHT TEMPS WILL DROP TO THE LOW 60S
WITH HUMIDITY RECOVERING TO AROUND 70 TO 75%.
ANOTHER WARM DAY WITH NEAR CRITICAL TO CRITICAL FIRE WEATHER
CONDITIONS ARE EXPECTED ON SUNDAY. HIGHS WILL BE IN THE LOWER 90S
WITH AFTERNOON HUMIDITIES RANGING FROM 30 TO 35%. LIGHT WESTERLY
WINDS IN THE MORNING WILL SHIFT TO THE EAST IN THE EARLY AFTERNOON.
AFTERNOON WIND SPEEDS WILL BE AROUND 10 TO 20 MPH WITH GUSTS
AROUND 25 TO 30 MPH.
HIGHS IN THE LOW 90S ARE STILL EXPECTED ON MONDAY AND TUESDAY WITH
CHANCES FOR SHOWERS AND STORMS IN THE AFTERNOONS.
REST OF TODAY
SKY/WEATHER.........SUNNY (15-25 PERCENT). AREAS OF SMOKE LATE IN
THE AFTERNOON.
MAX TEMPERATURE.....AROUND 100.
MIN HUMIDITY........16 PERCENT.
WIND (20 FT)........SOUTH WINDS 10 TO 15 MPH SHIFTING TO THE EAST
LATE IN THE AFTERNOON. GUSTS UP TO 23 MPH.
CWR.................0 PERCENT.
MIXING HEIGHT.......9200 TO 9700 FT AGL.
TRANSPORT WINDS.....SOUTH 20 TO 25 MPH SHIFTING TO THE SOUTHEAST
LATE IN THE AFTERNOON.
SMOKE DISPERSAL.....VERY GOOD.
TIME (MDT) 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........5 6 6 7 30 30 30
WEATHER COV..... ARS ARS ARS
WEATHER TYPE.... SMK SMK SMK
TSTM COV........
CWR.............0 0 0 0 0 0 0
TEMP............85 93 95 97 99 100 99
RH..............45 34 28 23 19 16 15
20 FT WIND DIR..S SW S S S SE E
20 FT WIND SPD..14 13 12 10 10 10 12
20 FT WIND GUST.23 21 18 16 16 17 17
MIX HGT (KFT)...2.9 3.6 4.2 5.0 9.7 7.1 7.0
TRANSP WIND DIR.S S S SW SW S SE
TRANSP WIND SPD.22 20 17 16 16 16 18
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT). AREAS OF SMOKE
THROUGH THE NIGHT. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS EARLY IN THE EVENING.
MIN TEMPERATURE.....AROUND 63.
MAX HUMIDITY........73 PERCENT.
WIND (20 FT)........NORTHEAST WINDS 10 TO 15 MPH SHIFTING TO THE
WEST OVERNIGHT. GUSTS UP TO 21 MPH. GUSTY AND
ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS EARLY
IN THE EVENING.
CWR.................0 PERCENT.
MIXING HEIGHT.......500 TO 1000 FT AGL.
TRANSPORT WINDS.....EAST 20 TO 25 MPH SHIFTING TO THE SOUTH 15 TO
20 MPH OVERNIGHT, THEN SHIFTING TO THE WEST
OVERNIGHT.
SMOKE DISPERSAL.....POOR.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........7 12 18 25 30 26 13 12 13 11 9 10
WEATHER COV.....ARS ARS ARS ARS ARS ARS ARS ARS ARS ARS ARS ARS
WEATHER TYPE....SMK SMK SMK SMK SMK SMK SMK SMK SMK SMK SMK SMK
TSTM COV........ SCH SCH SCH SCH
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............97 93 86 82 78 75 73 71 69 67 63 62
RH..............16 18 27 37 43 49 54 56 58 60 69 69
20 FT WIND DIR..E NE NE NE E E E NE W W W W
20 FT WIND SPD..15 15 15 14 13 13 12 9 8 9 9 8
20 FT WIND GUST.21 21 21 20 18 17 16 15 14 12 14 14
MIX HGT (KFT)...5.6 1.1 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
TRANSP WIND DIR.E E E E E SE SE S W NW NW NW
TRANSP WIND SPD.21 21 21 20 20 17 16 14 13 12 12 13
SUNDAY
SKY/WEATHER.........MOSTLY SUNNY (20-30 PERCENT). AREAS OF SMOKE.
MAX TEMPERATURE.....AROUND 93.
MIN HUMIDITY........32 PERCENT.
WIND (20 FT)........NORTHWEST WINDS AROUND 10 MPH WITH GUSTS TO
AROUND 16 MPH SHIFTING TO THE EAST 15 TO 20 MPH
WITH GUSTS TO AROUND 28 MPH IN THE AFTERNOON.
CWR.................0 PERCENT.
MIXING HEIGHT.......4900 TO 5400 FT AGL.
TRANSPORT WINDS.....NORTHWEST 15 TO 20 MPH SHIFTING TO THE
NORTHEAST 20 TO 25 MPH IN THE LATE MORNING AND
EARLY AFTERNOON, THEN SHIFTING TO THE EAST 25
TO 30 MPH LATE IN THE AFTERNOON.
SMOKE DISPERSAL.....GOOD INCREASING TO VERY GOOD LATE IN THE
AFTERNOON.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........48 43 23 30 30 14 14 9 6 17 13 8
WEATHER COV.....ARS ARS ARS ARS ARS ARS ARS ARS ARS ARS ARS ARS
WEATHER TYPE....SMK SMK SMK SMK SMK SMK SMK SMK SMK SMK SMK SMK
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............62 67 70 74 78 82 85 88 90 91 92 91
RH..............73 61 56 53 44 37 34 30 27 27 26 26
20 FT WIND DIR..NW NW N N NE NE NE E E E E E
20 FT WIND SPD..10 8 8 10 10 12 13 14 15 15 16 17
20 FT WIND GUST.14 16 16 18 20 21 23 23 24 24 26 28
MIX HGT (KFT)...0.5 0.8 1.1 1.5 1.9 2.3 2.8 3.6 4.5 5.4 4.8 4.2
TRANSP WIND DIR.NW NW N N N NE NE NE E E E E
TRANSP WIND SPD.13 14 15 16 18 20 21 22 23 23 25 26
FORECAST DAYS 3 THROUGH 5
MONDAY
MOSTLY CLEAR. LOWS IN THE LOWER 60S. HIGHS IN THE MID 90S. EAST
WINDS AROUND 15 MPH.
TUESDAY
PARTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS IN THE
MID 60S. HIGHS IN THE LOWER 90S. EAST WINDS AROUND 15 MPH.
WEDNESDAY
PARTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS IN THE
LOWER 60S. HIGHS IN THE LOWER 80S. EAST WINDS AROUND 15 MPH.
FORECASTER...GS
REQUESTED BY...DUWAYNE TRAVERSIE
TYPE OF REQUEST...WILDFIRE
.TAG 2619089.1/UNR
.DELDT 08/08/26
.FORMATTERVERSION 2.0.0
.EMAIL DUWAYNE.TRAVERSIE@BIA.GOV,REDMONSON@BLM.GOV
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