816
FNUS73 KUNR 300143
FWSUNR
SPOT FORECAST FOR GLAD VALLEY...NDSRA
NATIONAL WEATHER SERVICE RAPID CITY SD
743 PM MDT WED JUL 29 2026
FORECAST IS BASED ON FORECAST START TIME OF 2130 MDT ON JULY 29.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
SHOWERS AND STORMS WILL BE AROUND THE SPOT LOCATION
FROM NOW (1930PM) TO AROUND MIDNIGHT MDT OR SHORTLY AFTER. MAIN
CONCERN WILL BE GUSTY AND ERRATIC WINDS, ALONG WITH LIGHTNING AND
LIGHT TO MODERATE RAIN.
GIVEN THE MOISTURE IN THE REGION, RH RECOVERY WILL BE VERY GOOD,
WITH OVERNIGHT RH'S 90 TO 100%. ONCE THE INITIAL LINE OF
SHOWERS/STORMS MOVES THROUGH TONIGHT, THERE WILL BE A BREAK IN
PRECIPITATION BUT MORE SHOWERS/STORMS ARE EXPECTED DURING THE DAY
THURSDAY.
A COOL FRONT WILL CROSS THE REGION OVERNIGHT INTO THURSDAY
MORNING. STRONG WINDS AREN'T EXPECTED WITH THIS FRONT BUT WINDS
WILL BE OUT OF THE NORTH TOMORROW WITH SLIGHTLY COOLER HIGHS AND
HIGHER AFTERNOON HUMIDITIES.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT) THEN BECOMING
MOSTLY CLOUDY (70-80 PERCENT). CHANCE OF SHOWERS
AND THUNDERSTORMS EARLY IN THE EVENING. SHOWERS
AND THUNDERSTORMS LIKELY OVERNIGHT.
MIN TEMPERATURE.....AROUND 65.
MAX HUMIDITY........100 PERCENT.
WIND (20 FT)........SOUTHEAST WINDS 10 TO 20 MPH WITH GUSTS TO
AROUND 28 MPH DECREASING TO AROUND 10 MPH WITH
GUSTS TO AROUND 17 MPH OVERNIGHT, THEN SHIFTING
TO THE WEST WITH GUSTS TO AROUND 15 MPH AFTER 3
AM SHIFTING TO THE EAST WITH GUSTS TO AROUND 14
MPH AFTER 3 AM. GUSTY AND ERRATIC WINDS
EXPECTED NEAR THUNDERSTORMS EARLY IN THE
EVENING.
CWR.................45 PERCENT.
MIXING HEIGHT.......500 TO 1000 FT AGL.
TRANSPORT WINDS.....SOUTHEAST 20 TO 25 MPH.
SMOKE DISPERSAL.....FAIR DECREASING TO POOR IN THE LATE EVENING AND
OVERNIGHT.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........42 40 72 71 69 78 62 82 83 89 79 91
WEATHER COV.....PTY PTY CHC CHC CHC CHC LKY LKY LKY LKY LKY LKY
WEATHER TYPE....SMK SMK RW RW RW RW RW RW RW RW RW RW
TSTM COV........ CHC CHC CHC CHC LKY LKY LKY LKY LKY LKY
CWR.............40 40 40 40 40 40 40 40 40 40 40 40
TEMP............94 90 85 81 77 74 72 70 69 69 67 66
RH..............34 40 49 57 65 74 81 87 90 93 100 100
20 FT WIND DIR..S SE SE SE SE SE E SE SE W E E
20 FT WIND SPD..16 14 13 12 12 10 10 9 8 8 8 7
20 FT WIND GUST.28 25 22 24 22 18 17 17 15 15 14 13
MIX HGT (KFT)...6.0 4.1 2.3 0.5 0.5 0.5 0.5 0.5 0.6 0.6 0.6 0.7
TRANSP WIND DIR.S S SE SE SE SE SE SE SE SE SE SE
TRANSP WIND SPD.25 23 21 20 20 21 21 20 18 16 16 16
THURSDAY
SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT) THEN BECOMING
PARTLY SUNNY (55-65 PERCENT). SHOWERS AND
THUNDERSTORMS LIKELY.
MAX TEMPERATURE.....AROUND 84.
MIN HUMIDITY........56 PERCENT.
WIND (20 FT)........NORTH WINDS 5 TO 10 MPH WITH GUSTS TO AROUND 12
MPH INCREASING TO 10 TO 15 MPH WITH GUSTS TO
AROUND 25 MPH. GUSTY AND ERRATIC WINDS EXPECTED
NEAR THUNDERSTORMS.
CWR.................65 PERCENT.
MIXING HEIGHT.......5700 TO 6200 FT AGL.
TRANSPORT WINDS.....SOUTHEAST 15 TO 20 MPH BECOMING AROUND 15 MPH
LATE IN THE MORNING, THEN SHIFTING TO THE
NORTHEAST 15 TO 25 MPH LATE IN THE MORNING.
SMOKE DISPERSAL.....GOOD INCREASING TO VERY GOOD LATE IN THE
AFTERNOON.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........97 93 76 92 71 71 64 65 48 61 63 67
WEATHER COV.....LKY LKY LKY LKY LKY LKY LKY LKY LKY LKY LKY LKY
WEATHER TYPE....RW RW RW RW RW RW RW RW RW RW RW RW
TSTM COV........LKY LKY LKY LKY LKY LKY LKY LKY LKY LKY LKY LKY
CWR.............60 60 60 60 60 60 60 60 60 60 60 60
TEMP............68 69 70 74 76 77 79 80 80 82 79 79
RH..............97 97 97 84 79 76 69 65 62 56 60 60
20 FT WIND DIR..N NE NE NE N N N N N NE N N
20 FT WIND SPD..6 5 5 5 7 8 9 10 12 13 14 15
20 FT WIND GUST.12 10 10 10 13 15 17 18 22 23 24 25
MIX HGT (KFT)...0.8 1.0 1.1 1.3 1.7 2.0 2.4 3.6 4.9 6.2 5.7 5.3
TRANSP WIND DIR.SE SE S S SE NE N N NE NE NE NE
TRANSP WIND SPD.16 16 15 15 15 15 16 17 20 22 23 23
FORECASTER...AD
REQUESTED BY...IC BUAUER
TYPE OF REQUEST...WILDFIRE
.TAG 2618344.2/UNR
.DELDT 07/29/26
.FORMATTERVERSION 2.0.0
.EMAIL JUSTIN.BAUER@BIA.GOV,COLYNN.CONDON@BIA.GOV
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