107
FNUS73 KUNR 272042
FWSUNR
SPOT FORECAST FOR GARNER LAKE...USWFS
NATIONAL WEATHER SERVICE RAPID CITY SD
242 PM MDT WED MAY 27 2026
FORECAST IS BASED ON FORECAST START TIME OF 1500 MDT ON MAY 27.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
SOUTHEAST WINDS WILL REMAIN STRONG THROUGH THE AFTERNOON
AND EVENING HOURS, WITH SUSTAINED (20 FOOT) WINDS 15 TO 25 MPH AND GUSTS
30 TO 38 MPH. WINDS WILL COME DOWN GRADUALLY AFTER 2000 WITH LOSS OF HEATING
AS INVERSION BUILDS. STILL EXPECT BREEZY SOUTH-SOUTHEAST WINDS OVERNIGHT,
ALTHOUGH GUST FREQUENCY WILL BE MORE RANDOM.
FAIR OVERNIGHT RH RECOVERY EXPECTED TODAY (~65 PERCENT) WITH NO
PRECIPITATION EXPECTED.
STRONG SOUTH-SOUTHEAST WINDS AGAIN THURSDAY WITH PEAK GUSTS 35 TO 40 MPH
DURING THE LATE MORNING INTO THE AFTERNOON. DAYTIME RELATIVE HUMIDITY WILL
FALL TO AROUND 22 TO 25 PERCENT. ISOLATED SHOWERS AND THUNDERSTORMS ARE
POSSIBLE THURSDAY AFTERNOON. MAIN THREATS WILL BE LIGHTNING AND GUSTY,
ERRATIC OUTFLOW WINDS WITH ANY SHOWERS OR STORMS. PRECIPITATION WILL BE
SPOTTY AND GENERALLY LIGHT, ALTHOUGH ANY STRONGER CORES COULD YIELD
BRIEF, HEAVY DOWNPOURS.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT).
MIN TEMPERATURE.....AROUND 56.
MAX HUMIDITY........65-70 PERCENT.
WIND (20 FT)........BREEZY. SOUTHEAST WINDS 15 TO 25 MPH WITH GUSTS
TO AROUND 35 MPH. WINDS GRADUALLY DIMINISH AFTER
2000.
CWR.................0 PERCENT.
MIXING HEIGHT.......700 TO 1200 FT AGL.
TRANSPORT WINDS.....SOUTHEAST 30 TO 40 MPH DECREASING TO AROUND 30
MPH OVERNIGHT.
SMOKE DISPERSAL.....EXCELLENT DECREASING TO POOR EARLY IN THE
EVENING.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........60 62 69 50 50 43 66 59 41 36 27 24
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............81 79 76 72 69 67 66 64 63 61 58 57
RH..............25 27 31 34 40 45 47 52 54 60 67 69
20 FT WIND DIR..SE SE SE SE S S S S S S S SE
20 FT WIND SPD..20 20 18 16 15 15 14 14 15 16 16 18
20 FT WIND GUST.32 32 28 25 24 22 20 20 22 24 24 25
MIX HGT (KFT)...8.2 5.5 1.5 1.1 0.9 0.9 0.8 0.8 0.7 0.8 0.7 0.7
TRANSP WIND DIR.SE SE SE SE SE S S S SE SE SE SE
TRANSP WIND SPD.39 38 36 33 31 30 28 28 28 28 29 30
THURSDAY
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT). SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.
MAX TEMPERATURE.....AROUND 84.
MIN HUMIDITY........22-28 PERCENT.
WIND (20 FT)........WINDY. SOUTHEAST WINDS 20 TO 30 MPH WITH GUSTS
TO AROUND 35 TO 40 MPH. GUSTY AND ERRATIC WINDS
EXPECTED NEAR THUNDERSTORMS LATE IN THE
AFTERNOON.
CWR.................0 PERCENT.
MIXING HEIGHT.......8800 TO 9300 FT AGL.
TRANSPORT WINDS.....SOUTHEAST 35 TO 40 MPH SHIFTING TO THE SOUTH 40
TO 45 MPH IN THE LATE MORNING AND AFTERNOON.
SMOKE DISPERSAL.....VERY GOOD INCREASING TO EXCELLENT.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........83 74 65 71 68 57 69 69 77 82 79 76
WEATHER COV..... SCH SCH SCH SCH SCH SCH
WEATHER TYPE.... RW RW RW RW RW RW
TSTM COV........ SCH SCH SCH
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............58 61 64 69 74 77 78 81 82 83 83 82
RH..............67 62 58 49 41 36 32 28 25 24 22 23
20 FT WIND DIR..SE SE SE SE SE S S S S S S SE
20 FT WIND SPD..22 24 26 28 30 29 28 28 26 25 25 24
20 FT WIND GUST.31 31 33 35 37 38 38 40 36 35 35 33
MIX HGT (KFT)...0.7 1.4 2.2 3.1 3.9 4.7 5.6 6.8 8.1 9.3 8.0 6.7
TRANSP WIND DIR.SE SE SE S S S S S S S S SE
TRANSP WIND SPD.32 36 39 43 44 43 41 39 38 36 36 36
FORECASTER...SE
REQUESTED BY...CASPER DISPATCH
TYPE OF REQUEST...WILDFIRE
.TAG 2614563.0/UNR
.DELDT 05/27/26
.FORMATTERVERSION 2.0.0
.EMAIL WYCPC@GMAIL.COM
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page