378
FNUS73 KUNR 042145
FWSUNR
SPOT FORECAST FOR NEEDLES...SDPRA
NATIONAL WEATHER SERVICE RAPID CITY SD
345 PM MDT FRI SEP 4 2026
FORECAST IS BASED ON FORECAST START TIME OF 1600 MDT ON SEPTEMBER 04.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
STRONG SOUTHEASTERLY WINDS WILL PERSIST THROUGH THE
EVENING AND OVERNIGHT HOURS WITH GUSTS UP TO 25-30 MPH POSSIBLE THROUGH
1800. RELATIVE HUMIDITY WILL SLOWLY RISE THROUGH THE EVENING HOURS,
RECOVERING ABOVE 50 PERCENT AFTER 2300, PEAKING AROUND 60 PERCENT BY
DAYBREAK SATURDAY.
THERE IS A SMALL CHANCE (~10%) OF A THUNDERSTORM THIS AFTERNOON AND
EVENING, ALTHOUGH THE LONGER INTO THE EVENING WE GO, THE LESSER THE
POSSIBILITY. SHOULD A STORM FORM, GUSTY, ERRATIC WINDS AND LIGHTNING
WILL BE THE MAIN THREATS. WE WILL CONTINUE TO MONITOR AND WILL REACH
OUT SHOULD ANYTHING THREATEN THE FIRE AREA.
NEAR-CRITICAL FIRE WEATHER CONDITIONS EXPECTED SATURDAY - VERY HOT
(99F) AND DRY TOMORROW, RELATIVE HUMIDITY WILL FALL TO AS LOW AS
17-18 PERCENT BY PEAK HEATING WITH BREEZY SOUTHERLY (SUSTAINED) WINDS
10 TO 18 MPH WITH GUSTS UP TO 24 MPH.
REST OF TODAY
SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT). SLIGHT CHANCE (10%) OF
SHOWERS AND THUNDERSTORMS.
MAX TEMPERATURE.....AROUND 97.
MIN HUMIDITY........23-26 PERCENT.
WIND (20 FT)........SOUTHEAST WINDS AROUND 15 MPH WITH GUSTS UP TO
24 TO 30 MPH. GUSTY AND ERRATIC WINDS EXPECTED
NEAR THUNDERSTORMS.
CWR.................0 PERCENT.
MIXING HEIGHT.......8000 TO 8500 FT AGL.
TRANSPORT WINDS.....SOUTHEAST 20 TO 25 MPH.
SMOKE DISPERSAL.....EXCELLENT.
TIME (MDT) 4PM 5PM
SKY (%).........30 30
WEATHER COV.....SCH SCH
WEATHER TYPE....RW RW
TSTM COV........SCH SCH
CWR.............0 0
TEMP............97 96
RH..............23 24
20 FT WIND DIR..SE SE
20 FT WIND SPD..16 15
20 FT WIND GUST.28 25
MIX HGT (KFT)...8.5 6.5
TRANSP WIND DIR.S SE
TRANSP WIND SPD.21 20
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT).
MIN TEMPERATURE.....AROUND 68.
MAX HUMIDITY........60-65 PERCENT.
WIND (20 FT)........SOUTHEAST WINDS 10 TO 18 MPH SHIFTING TO THE
SOUTH AFTER 2400. GUSTS UP TO 22 MPH.
CWR.................0 PERCENT.
MIXING HEIGHT.......500 TO 1000 FT AGL.
TRANSPORT WINDS.....SOUTH 20 TO 25 MPH.
SMOKE DISPERSAL.....POOR.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........35 35 35 35 35 35 8 10 9 12 16 27
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............93 89 84 79 77 76 75 73 72 71 69 68
RH..............27 32 38 45 48 52 54 57 57 57 61 63
20 FT WIND DIR..SE SE SE SE SE SE S S S S S S
20 FT WIND SPD..13 14 15 16 16 15 15 14 13 12 12 12
20 FT WIND GUST.20 20 22 22 22 21 21 21 20 17 16 16
MIX HGT (KFT)...4.6 0.8 0.5 0.6 0.6 0.5 0.5 0.5 0.5 0.5 0.5 0.5
TRANSP WIND DIR.SE SE SE SE SE S S S S S S S
TRANSP WIND SPD.20 21 22 23 23 22 22 20 18 17 17 16
SATURDAY
SKY/WEATHER.........SUNNY (15-25 PERCENT) THEN BECOMING MOSTLY
SUNNY (45-55 PERCENT).
MAX TEMPERATURE.....AROUND 99.
MIN HUMIDITY........17-21 PERCENT.
WIND (20 FT)........SOUTH-SOUTHWEST WINDS 10 TO 15 MPH SHIFTING TO THE
SOUTHEAST LATE IN THE AFTERNOON. GUSTS UP TO 24
MPH.
CWR.................0 PERCENT.
MIXING HEIGHT.......8500 TO 9000 FT AGL INCREASING TO 10300 TO
10800 FT AGL LATE IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTH 15 TO 20 MPH.
SMOKE DISPERSAL.....GOOD INCREASING TO EXCELLENT LATE IN THE
AFTERNOON.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........5 12 5 7 8 18 10 15 33 39 58 39
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............68 70 74 78 87 91 94 97 98 98 98 96
RH..............61 59 51 45 34 28 24 22 20 18 19 21
20 FT WIND DIR..S S S SW SW SW SW S S S S SE
20 FT WIND SPD..12 10 10 10 9 8 8 8 10 10 12 13
20 FT WIND GUST.16 16 17 16 15 14 13 15 18 20 22 24
MIX HGT (KFT)...0.5 0.4 0.5 0.8 1.4 2.3 5.6 7.3 9.0 11 7.9 5.1
TRANSP WIND DIR.S SW SW SW SW S S S S S S SE
TRANSP WIND SPD.16 16 16 16 15 13 13 13 15 16 18 20
FORECASTER...SE
REQUESTED BY...COLYNN CONDON
TYPE OF REQUEST...WILDFIRE
.TAG 2621228.0/UNR
.DELDT 09/04/26
.FORMATTERVERSION 2.0.0
.EMAIL COLYNN.CONDON@BIA.GOV
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page