840
FNUS73 KUNR 252258
FWSUNR
SPOT FORECAST FOR TIMBER...SD-PRA
NATIONAL WEATHER SERVICE RAPID CITY SD
455 PM MDT WED MAR 25 2026
FORECAST IS BASED ON FORECAST START TIME OF 1700 MDT ON MARCH 25.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
..RED FLAG WARNING IN EFFECT UNTIL 10 PM MDT THIS EVENING
DISCUSSION
A COMBINATION OF VERY WARM TEMPERATURES, GUSTY
WINDS, LOW RELATIVE HUMIDITIES, AND ONGOING DROUGHT WILL RESULT
IN CRITICAL FIRE WEATHER CONDITIONS THROUGH THIS EVENING, AND A
RED FLAG WARNING IS IN EFFECT UNTIL 10 PM MDT. WESTERLY WINDS ARE
CURRENTLY GUSTING 20-25 MPH OVER THE FIRE WITH RH VALUES AROUND 15
PERCENT, AND THESE CONDITIONS WILL CONTINUE THROUGH ABOUT 7 PM
BEFORE WINDS TEMPORARILY START TO DECREASE (AND NUDGE MORE OUT OF
THE SOUTH) AND RHS START TO RISE. WINDS WILL SHIFT INTO THE
NORTH BETWEEN MIDNIGHT AND 2 AM AND INCREASE AGAIN TO 10-15 MPH
GUSTING TO 25 MPH OVERNIGHT, SLOWLY TRENDING A BIT STRONGER
THURSDAY MORNING INTO THURSDAY AFTERNOON OUT OF THE SAME DIRECTION
WITH GUSTS TO 30 MPH BY AFTERNOON. A MUCH COOLER AND MORE HUMID
AIRMASS IS EXPECTED AS SOON AS THIS OVERNIGHT WIND SHIFT OCCURS,
HOWEVER, WITH HIGH TEMPERATURES THURSDAY ONLY REACHING THE LOWER
50S AND RH VALUES REMAINING ABOVE 40 PERCENT. AN ISOLATED RAIN
SHOWER IS POSSIBLE AT ANY TIME TONIGHT AND THURSDAY, BUT THE BEST
CHANCE OF SEEING ANY RAINFALL ACCUMULATION WILL REMAIN WELL TO THE
NORTH WITH ONLY A TRACE TO 0.05 INCHES OF QPF EXPECTED OVER THE
FIRE. CONFIDENCE ON OCCURRENCE AND TIMING OF ANY RAIN SHOWER IS
LOW.
REST OF TODAY
SKY/WEATHER.........MOSTLY SUNNY (10-20 PERCENT).
MAX TEMPERATURE.....AROUND 85 DEGREES.
MIN HUMIDITY........15 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS AROUND 10 MPH WITH GUSTS TO
AROUND 25 MPH.
CWR.................0 PERCENT.
MIXING HEIGHT.......6400 TO 6900 FT AGL.
TRANSPORT WINDS.....WEST AROUND 25 MPH.
SMOKE DISPERSAL.....VERY GOOD.
TIME (MDT) 5PM
SKY (%).........9
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0
TEMP............85
RH..............15
20 FT WIND DIR..SW
20 FT WIND SPD..10
20 FT WIND GUST.25
MIX HGT (KFT)...6.9
TRANSP WIND DIR.W
TRANSP WIND SPD.22
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT) THEN BECOMING
MOSTLY CLOUDY (60-70 PERCENT). SLIGHT CHANCE OF A
LIGHT RAIN SHOWER.
MIN TEMPERATURE.....AROUND 40.
MAX HUMIDITY........80 TO 85 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS AROUND 10 MPH SHIFTING MORE TO THE
SOUTH AND DECREASING AFTER 7 PM, THEN SHIFTING
NORTH BETWEEN MIDNIGHT AND 2 AM INCREASING
TO 10 TO 15 MPH GUSTING TO 25 MPH.
CWR.................5 PERCENT.
MIXING HEIGHT.......400 TO 900 FT AGL.
TRANSPORT WINDS.....NORTHWEST 15 TO 20 MPH DECREASING AFTER 7 PM, THEN
SHIFTING TO NORTH AFTER MIDNIGHT INCREASING AGAIN
TO 20 MPH.
SMOKE DISPERSAL.....GOOD.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........32 47 58 66 66 60 73 71 71 55 58 77
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............82 75 70 66 62 60 60 58 56 54 51 46
RH..............16 20 24 29 35 36 36 39 43 48 56 68
20 FT WIND DIR..SW SW S S S S SW W NW NW N N
20 FT WIND SPD..10 9 8 8 7 6 6 6 7 9 9 10
20 FT WIND GUST.20 15 13 13 14 14 14 15 16 18 20 21
MIX HGT (KFT)...1.1 0.6 0.6 0.6 0.5 0.5 0.5 0.5 0.4 0.5 0.5 0.6
TRANSP WIND DIR.W NW NE E SE SW W W N N N N
TRANSP WIND SPD.16 14 14 12 12 13 13 14 15 17 18 19
THURSDAY
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT). SLIGHT CHANCE OF
A LIGHT RAIN SHOWER.
MAX TEMPERATURE.....50 TO 54 DEGREES.
MIN HUMIDITY........46 TO 51 PERCENT.
WIND (20 FT)........NORTH WINDS 10 TO 20 MPH. GUSTS UP TO 25 MPH
INCREASING TO 30 MPH DURING THE AFTERNOON.
CWR.................10 PERCENT.
MIXING HEIGHT.......3400 TO 3900 FT AGL.
TRANSPORT WINDS.....NORTHEAST 25 TO 35 MPH.
SMOKE DISPERSAL.....GOOD.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........74 55 57 54 74 87 87 83 81 79 85 82
WEATHER COV..... SCH SCH SCH SCH SCH SCH
WEATHER TYPE.... RW RW RW RW RW RW
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............43 42 41 44 46 48 48 49 49 49 47 46
RH..............79 82 86 79 73 65 60 58 56 54 53 53
20 FT WIND DIR..N N N N N N N N N N N N
20 FT WIND SPD..10 12 13 15 16 17 18 18 18 18 18 18
20 FT WIND GUST.21 22 22 25 28 28 29 29 30 30 29 29
MIX HGT (KFT)...0.7 0.9 1.8 2.3 2.8 3.3 3.6 3.7 3.8 3.9 3.4 2.9
TRANSP WIND DIR.N NE NE NE NE NE NE NE N N N N
TRANSP WIND SPD.21 24 26 29 30 29 29 29 29 29 29 28
FORECASTER...KSMITH
REQUESTED BY...IC BACKWARD
TYPE OF REQUEST...WILDFIRE
.TAG 2607938.0/UNR
.DELDT 03/25/26
.FORMATTERVERSION 2.0.0
.EMAIL JUSTIN.BAUER@BIA.GOV,MICHAEL.BACKWARD@BIA.GOV,SDGPC@FIRENET.GOV,JERRICK.THOMPSON@BIA.GOV
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