914
FNUS73 KUNR 240002
FWSUNR
SPOT FORECAST FOR MURPHY FIRE...SDS
NATIONAL WEATHER SERVICE RAPID CITY SD
602 PM MDT THU APR 23 2026
FORECAST IS BASED ON FORECAST START TIME OF 1800 MDT ON APRIL 23.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
NORTHERLY WINDS THIS EVENING WILL BECOME EAST
AFTER MIDNIGHT AND THEN SOUTH BY SUNRISE. SPEEDS WILL AVERAGE 5-15
MPH. RELATIVE HUMIDITY RECOVERY TONIGHT WILL BE GOOD WITH
TEMPERATURES DROPPING JUST BELOW FREEZING. A DISTURBANCE WILL
SPREAD RAIN AND SNOW SHOWERS INTO THE FIRE AREA AFTER 900 PM.
MOSTLY SNOW SHOWERS ARE EXPECTED FRIDAY MORNING, BUT THEN BACK TO
A MIX OF RAIN AND SNOW SHOWERS. THE CHANCE OF WETTING
PRECIPITATION IS 40-50% WITH LESS THAN AN INCH OF SNOW EXPECTED.
SOUTHERLY WINDS FRIDAY WILL BECOME NORTHERLY FRIDAY NIGHT. HIGHS
FRIDAY WILL BE IN THE MID 40S. FRIDAY NIGHT LOWS WILL DROP INTO
THE MID 20S.
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT). RAIN SHOWERS AND
SNOW SHOWERS LIKELY IN THE EVENING, THEN RAIN
SHOWERS AND SNOW SHOWERS OVERNIGHT.
MIN TEMPERATURE.....AROUND 31.
MAX HUMIDITY........82 PERCENT.
WIND (20 FT)........NORTH WINDS 5-15 MPH BECOMING EAST AROUND
5 MPH, THEN SOUTH 5-10 MPH BY SUNRISE.
CWR.................45 PERCENT.
MIXING HEIGHT.......1000 TO 1500 FT AGL.
TRANSPORT WINDS.....NORTH 20 TO 30 MPH DECREASING TO AROUND 15 MPH
AFTER 3 AM, THEN SHIFTING TO THE WEST EARLY IN
THE MORNING.
SMOKE DISPERSAL.....GOOD DECREASING TO POOR EARLY IN THE EVENING.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........64 66 61 67 74 85 92 90 88 85 84 85
WEATHER COV.....SCH SCH CHC CHC LKY LKY DEF DEF DEF DEF LKY LKY
WEATHER TYPE....RW RW RW RW RS RS RS SW SW SW SW SW
TSTM COV........
CWR.............50 50 50 50 50 50 50 50 50 50 50 50
TEMP............51 48 45 42 38 36 35 34 33 33 32 32
RH..............36 42 49 55 67 72 75 78 82 78 82 82
20 FT WIND DIR..N N N N N N N N N N E S
20 FT WIND SPD..14 13 13 13 13 12 10 10 9 7 5 5
20 FT WIND GUST.23 22 22 22 23 23 23 22 18 16 14 13
MIX HGT (KFT)...6.1 4.3 1.7 1.7 2.7 2.2 2.1 2.1 1.9 1.6 1.3 1.0
TRANSP WIND DIR.NW NW N N N N N N N N NW W
TRANSP WIND SPD.25 23 22 22 23 25 26 23 18 14 12 12
FRIDAY
SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT). SNOW SHOWERS
LIKELY IN THE MORNING, THEN CHANCE OF SNOW
SHOWERS EARLY IN THE AFTERNOON. CHANCE OF RAIN
SHOWERS IN THE AFTERNOON.
MAX TEMPERATURE.....AROUND 47.
MIN HUMIDITY........47 PERCENT.
WIND (20 FT)........SOUTH WINDS AROUND 10 MPH SHIFTING TO THE
NORTHWEST LATE IN THE AFTERNOON.
CWR.................40 PERCENT.
MIXING HEIGHT.......6200 TO 6700 FT AGL.
TRANSPORT WINDS.....WEST 10 TO 15 MPH SHIFTING TO THE SOUTH 15 TO
20 MPH EARLY IN THE MORNING, THEN SHIFTING TO
THE WEST LATE IN THE AFTERNOON SHIFTING TO THE
NORTHWEST LATE IN THE AFTERNOON.
SMOKE DISPERSAL.....VERY GOOD.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........81 86 86 86 86 85 85 77 73 73 74 74
WEATHER COV.....LKY LKY LKY LKY LKY LKY CHC CHC CHC CHC CHC CHC
WEATHER TYPE....SW SW SW SW SW SW RS RS RW RW RW RW
TSTM COV........
CWR.............40 40 40 40 40 40 40 40 40 40 40 40
TEMP............32 31 33 36 39 40 42 44 45 45 46 45
RH..............78 81 75 64 59 55 51 47 47 47 49 51
20 FT WIND DIR..S S S S S SE SW W W W NW NW
20 FT WIND SPD..6 6 6 6 6 6 6 7 8 8 9 9
20 FT WIND GUST.13 13 13 14 15 17 21 21 21 21 21 20
MIX HGT (KFT)...1.0 1.4 2.4 2.7 3.7 4.8 6.0 6.3 6.5 6.7 5.7 4.7
TRANSP WIND DIR.W SW S S S S S SW W W W NW
TRANSP WIND SPD.12 10 12 12 13 15 16 16 17 17 18 21
FRIDAY NIGHT
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT). SLIGHT CHANCE OF
RAIN SHOWERS EARLY IN THE EVENING. SLIGHT
CHANCE OF SNOW SHOWERS IN THE EVENING, THEN
CHANCE OF SNOW SHOWERS OVERNIGHT.
MIN TEMPERATURE.....AROUND 26.
MAX HUMIDITY........81 PERCENT.
WIND (20 FT)........NORTH WINDS AROUND 10 MPH.
CWR.................20 PERCENT.
MIXING HEIGHT.......600 TO 1100 FT AGL.
TRANSPORT WINDS.....NORTHWEST 15 TO 25 MPH SHIFTING TO THE WEST
AROUND 10 MPH AFTER 3 AM.
SMOKE DISPERSAL.....POOR.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........83 92 86 80 75 70 65 64 63 62 62 61
WEATHER COV.....SCH SCH SCH SCH SCH SCH CHC CHC CHC CHC CHC CHC
WEATHER TYPE....RW RS RS RS SW SW SW SW SW SW SW SW
TSTM COV........
CWR.............20 20 20 20 20 20 20 20 20 20 20 20
TEMP............44 41 37 35 34 33 32 31 30 29 28 27
RH..............51 62 72 75 75 78 78 78 75 75 75 81
20 FT WIND DIR..NW N N N N N NW NW NW NW NW N
20 FT WIND SPD..8 7 7 7 7 6 6 6 6 6 6 6
20 FT WIND GUST.20 17 15 14 13 14 14 13 13 12 10 10
MIX HGT (KFT)...3.7 2.9 2.1 1.3 1.1 0.9 0.6 0.6 0.7 0.7 0.7 0.7
TRANSP WIND DIR.NW NW N N N N N NW NW NW NW W
TRANSP WIND SPD.21 18 15 13 13 14 15 15 13 12 10 9
FORECASTER...EH
REQUESTED BY...SAMANTHA
TYPE OF REQUEST...WILDFIRE
.TAG 2611551.0/UNR
.DELDT 04/23/26
.FORMATTERVERSION 2.0.0
.EMAIL SDGPC@FIRENET.GOV
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