069
FNUS73 KUNR 082127
FWSUNR
SPOT FORECAST FOR ELM...SOUTH DAKOTA STATE
NATIONAL WEATHER SERVICE RAPID CITY SD
327 PM MDT TUE SEP 8 2026
FORECAST IS BASED ON FORECAST START TIME OF 1500 MDT ON SEPTEMBER 08.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
SOUTHWESTERLY WINDS THIS AFTERNOON WILL SHIFT NORTHWESTERLY
AFTER 1700, THEN WILL BECOME MORE NORTHERLY OVERNIGHT. WINDS WILL GUST
TO 30 MPH OVERNIGHT ON EXPOSED, UPPER SLOPES. EXPECT LIGHTER, MORE VARIABLE
WINDS ON LOWER SLOPES AND SHELTERED AREAS. OVERNIGHT RH RECOVERY WILL BE FAIR,
RECOVERING TO AROUND 55 PERCENT BY DAYBREAK.
NEAR-CRITICAL CONDITIONS EXPECTED WEDNESDAY, ALTHOUGH TEMPERATURES WILL "ONLY"
WARM TO AROUND 80F. RELATIVE HUMIDITY WILL BOTTOM OUT AROUND 16 TO 18 PERCENT
WITH WESTERLY WINDS 5 TO 15 MPH WITH GUSTS TO 25 MPH; WINDS WILL BE AT THE UPPER
END OF THIS RANGE ON EXPOSED UPPER SLOPES, WITH LIGHTER, LESS GUSTY WINDS
IN SHELTERED LOWER SLOPES.
ELEVATED TO NEAR-CRTICIAL FIRE WEATHER CONDITIONS WILL PERSIST THROUGH THE WEEK.
NO PRECIPITATION FORECAST UNTIL LATE SATURDAY NIGHT INTO SUNDAY.
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (10-20 PERCENT).
MIN TEMPERATURE.....AROUND 56.
MAX HUMIDITY........55 PERCENT.
WIND (20 FT)........RIDGETOP WINDS: NORTHWEST AROUND 10 MPH
WITH GUSTS TO AROUND 15 MPH SHIFTING TO THE
NORTH 10 TO 20 MPH WITH GUSTS TO AROUND 28 TO 30 MPH.
WINDS SHIFT BACK WESTERLY NEAR 0500.
LOWER SLOPES AND SHELTERED AREAS: LIGHTER NORTHERLY
WINDS 5 TO 10 MPH WITH OCCASIONAL GUSTS TO 15 MPH.
CWR.................0 PERCENT.
MIXING HEIGHT.......500 TO 1000 FT AGL.
TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH SHIFTING TO THE NORTH
15 TO 25 MPH EARLY IN THE EVENING, THEN
INCREASING TO 25 TO 30 MPH OVERNIGHT BECOMING
WEST AROUND 15 MPH EARLY IN THE MORNING.
SMOKE DISPERSAL.....POOR.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........3 6 5 8 12 19 13 28 11 8 12 10
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............73 70 68 66 64 63 62 61 59 59 57 56
RH..............25 28 32 37 38 41 41 44 49 51 53 55
20 FT WIND DIR..NW NW N N N N N N N N NW W
20 FT WIND SPD..7 6 7 8 10 14 14 15 16 14 9 6
20 FT WIND GUST.17 13 15 15 20 22 25 25 31 31 24 16
MIX HGT (KFT)...4.2 0.6 0.5 0.5 0.5 0.5 0.5 0.6 0.5 0.5 0.5 0.5
TRANSP WIND DIR.W NW N N N N N N N N N W
TRANSP WIND SPD.15 14 13 14 16 21 23 26 28 26 22 15
WEDNESDAY
SKY/WEATHER.........SUNNY (5-15 PERCENT).
MAX TEMPERATURE.....AROUND 80.
MIN HUMIDITY........16-18 PERCENT.
WIND (20 FT)........WEST WINDS 5 TO 15 MPH INCREASING TO AROUND 15 MPH
WITH GUSTS TO AROUND 25 MPH LATE IN THE AFTERNOON.
LIGHTER, MORE VARIABLE WINDS IN SHELTERED AREAS AND
LOWER SLOPES.
CWR.................0 PERCENT.
MIXING HEIGHT.......7400 TO 7900 FT AGL.
TRANSPORT WINDS.....WEST 10 TO 20 MPH INCREASING TO 20 TO 25 MPH 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 (%).........15 19 10 5 2 5 5 2 6 13 14 15
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............56 57 60 63 68 71 74 77 78 79 80 78
RH..............55 55 51 44 37 35 30 24 21 18 16 18
20 FT WIND DIR..SW W SW SW W W W W W W W W
20 FT WIND SPD..5 5 5 6 8 9 10 12 13 14 13 12
20 FT WIND GUST.12 9 10 13 16 18 21 23 25 26 25 24
MIX HGT (KFT)...0.5 0.4 0.6 1.6 2.9 4.7 6.0 6.6 7.3 7.9 6.6 5.4
TRANSP WIND DIR.W W W W W W W W W W W W
TRANSP WIND SPD.9 8 9 12 13 16 18 21 23 24 23 21
FORECASTER...SE
REQUESTED BY...RYAN FLYNN
TYPE OF REQUEST...WILDFIRE
.TAG 2621450.0/UNR
.DELDT 09/08/26
.FORMATTERVERSION 2.0.0
.EMAIL SDGPC@FIRENET.GOV,JOHN.HASKVITZ@STATE.SD.US
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