497
FNUS73 KUNR 131047
FWSUNR
SPOT FORECAST FOR NORTH ROUTE WF...WFS
NATIONAL WEATHER SERVICE RAPID CITY SD
447 AM MDT WED MAY 13 2026
FORECAST IS BASED ON FORECAST START TIME OF 0500 MDT ON MAY 13.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT
THURSDAY...
DISCUSSION
A HOT, DRY, AND BREEZY WEATHER PATTERN WILL BE IN
PLACE OVER THE FIRE RIGHT THROUGH SATURDAY, WITH A RED FLAG
WARNING IN EFFECT FOR TODAY AND THURSDAY SO FAR. IN ADDITION TO
AFTERNOON MINIMUM RELATIVE HUMIDITY VALUES DROPPING TO 10 TO 15
PERCENT EACH DAY, OVERNIGHT RECOVERY WILL BE POOR THROUGH THIS
PERIOD AS WELL. SOUTH WINDS TODAY AND TONIGHT ARE FORECAST TO
SWITCH TO NORTHWEST BETWEEN 5 AM AND 8 AM THURSDAY MORNING, AND
REMAIN OUT OF THE WEST-NORTHWEST THURSDAY. WHILE THERE IS A SMALL
CHANCE FOR A LIGHT SHOWER OR TWO TONIGHT NIGHT, THE NEXT DECENT
CHANCE FOR WETTING RAIN DOES NOT COME UNTIL LATE THIS WEEKEND.
REST OF TONIGHT
SKY/WEATHER.........CLEAR (0-10 PERCENT).
MIN TEMPERATURE.....AROUND 50 DEGREES.
MAX HUMIDITY........45 PERCENT.
WIND (20 FT)........SOUTH WINDS AROUND 14 MPH.
CWR.................0 PERCENT.
MIXING HEIGHT.......400 TO 900 FT AGL.
TRANSPORT WINDS.....SOUTH AROUND 20 MPH.
SMOKE DISPERSAL.....POOR.
TIME (MDT) 5AM
SKY (%).........4
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0
TEMP............50
RH..............45
20 FT WIND DIR..S
20 FT WIND SPD..12
20 FT WIND GUST.16
MIX HGT (KFT)...0.4
TRANSP WIND DIR.S
TRANSP WIND SPD.16
TODAY
SKY/WEATHER.........SUNNY (5-15 PERCENT).
MAX TEMPERATURE.....AROUND 90 DEGREES.
MIN HUMIDITY........15 PERCENT.
WIND (20 FT)........SOUTH WINDS 15 TO 25 MPH WITH GUSTS TO AROUND
31 MPH INCREASING TO AROUND 25 MPH WITH GUSTS
TO AROUND 33 MPH LATE IN THE AFTERNOON.
CWR.................0 PERCENT.
MIXING HEIGHT.......7500 TO 8000 FT AGL.
TRANSPORT WINDS.....SOUTH 20 TO 25 MPH INCREASING TO 30 TO 35 MPH
EARLY IN THE MORNING.
SMOKE DISPERSAL.....GOOD INCREASING TO EXCELLENT LATE IN THE
MORNING.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........6 8 5 4 3 8 13 12 7 5 5 6
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............49 53 59 67 75 78 81 85 87 89 90 89
RH..............49 46 39 32 25 23 21 18 17 16 15 16
20 FT WIND DIR..S S S S S S S S S S S S
20 FT WIND SPD..13 15 17 20 22 22 22 22 22 22 24 24
20 FT WIND GUST.18 23 26 30 31 31 30 30 30 30 33 33
MIX HGT (KFT)...0.4 0.5 1.2 2.1 3.3 4.2 4.9 6.1 6.9 8.0 7.5 7.1
TRANSP WIND DIR.S S S S S S S S S S S S
TRANSP WIND SPD.18 22 28 31 32 32 31 31 31 31 32 33
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT) THEN BECOMING
MOSTLY CLOUDY (70-80 PERCENT). SLIGHT CHANCE OF
SHOWERS OVERNIGHT.
MIN TEMPERATURE.....AROUND 62 DEGREES.
MAX HUMIDITY........48 PERCENT.
WIND (20 FT)........WINDY. SOUTH WINDS 25 TO 35 MPH SHIFTING BETWEEN
5 AM AND 8 AM TO THE NORTHWEST AROUND 25 MPH.
GUSTS UP TO 43 MPH DECREASING TO 31 MPH EARLY
IN THE MORNING.
CWR.................15 PERCENT.
MIXING HEIGHT.......600 TO 1100 FT AGL.
TRANSPORT WINDS.....SOUTH 40 TO 45 MPH SHIFTING TO THE WEST AROUND
35 MPH EARLY IN THE MORNING.
SMOKE DISPERSAL.....EXCELLENT DECREASING TO POOR.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........15 28 45 54 42 53 78 79 77 80 86 80
WEATHER COV..... SCH SCH SCH SCH SCH
WEATHER TYPE.... RW RW RW RW RW
TSTM COV........
CWR.............0 0 0 0 0 10 15 15 15 10 0 0
TEMP............88 85 82 78 76 75 75 73 72 70 66 64
RH..............17 19 21 24 26 27 27 33 35 39 45 48
20 FT WIND DIR..S SE S S S S S S S S S SW
20 FT WIND SPD..25 26 29 30 31 31 31 30 29 28 25 23
20 FT WIND GUST.35 37 39 41 43 43 43 41 39 38 35 31
MIX HGT (KFT)...5.4 1.0 0.6 0.7 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6
TRANSP WIND DIR.S S S S S S S S S SW SW W
TRANSP WIND SPD.36 38 40 43 44 45 44 44 41 39 36 32
THURSDAY
SKY/WEATHER.........PARTLY SUNNY (50-60 PERCENT) THEN BECOMING
SUNNY (10-20 PERCENT).
MAX TEMPERATURE.....AROUND 83 DEGREES.
MIN HUMIDITY........12 PERCENT.
WIND (20 FT)........BREEZY. NORTHWEST WINDS AROUND 25 MPH. GUSTS
UP TO 37 MPH IN THE MORNING DECREASING TO 30
MPH IN THE AFTERNOON.
CWR.................0 PERCENT.
MIXING HEIGHT.......9900 TO 10400 FT AGL.
TRANSPORT WINDS.....NORTHWEST 30 TO 40 MPH INCREASING TO 35 TO 40
MPH LATE IN THE MORNING, THEN DECREASING TO 25
TO 30 MPH EARLY IN THE AFTERNOON SHIFTING TO
THE WEST LATE IN THE AFTERNOON.
SMOKE DISPERSAL.....VERY GOOD INCREASING TO EXCELLENT.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........77 58 31 24 14 5 4 5 7 7 11 8
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............64 66 69 71 73 74 76 78 79 82 82 82
RH..............46 40 35 29 26 22 19 17 16 14 12 12
20 FT WIND DIR..SW W N NW N N NW NW NW W W W
20 FT WIND SPD..21 21 24 26 24 22 20 18 16 16 18 20
20 FT WIND GUST.29 29 33 37 33 30 26 25 26 28 29 30
MIX HGT (KFT)...0.7 1.5 2.4 3.2 4.1 5.0 5.9 7.2 8.6 9.9 10 10
TRANSP WIND DIR.W W NW N NW NW NW NW W W W W
TRANSP WIND SPD.30 32 36 38 36 31 28 26 25 26 28 30
FORECASTER...KSMITH
REQUESTED BY...IAN MUIRHEAD
TYPE OF REQUEST...WILDFIRE
.TAG 2613477.2/UNR
.DELDT 05/13/26
.FORMATTERVERSION 2.0.0
.EMAIL JUSTIN_EVANS2@HOTMAIL.COM,IAN_MUIRHEAD@NPS.GOV
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page