823
FNUS73 KFSD 060951
FWSFSD
SPOT FORECAST FOR SPRING RUN MCDOWELL TRACT...USFWS/IOWADNR
NATIONAL WEATHER SERVICE SIOUX FALLS SD
451 AM CDT SUN APR 6 2025
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
A LIGHT WESTERLY TO SOUTHWESTERLY WIND WILL PREVAIL THROUGH MID-
MORNING. WINDS WILL SLOWLY BEGIN TO INCREASE BY MID-DAY, WITH
OCCASIONAL GUSTS TO 20 MPH AT TIMES THROUGH THE AFTERNOON.
RELATIVE HUMIDITY VALUES WILL FALL TO AROUND 30 PERCENT THIS
AFTERNOON AT PEAK HEATING. MIXING HEIGHT ARE EXPECTED TO CLIMB TO
AROUND 7,000 FT AGL BY 3-4PM.
A COLD FRONT DROPS SOUTHWARD AFTER 7PM THIS EVENING, REACHING
HIGHWAY 14 BY 7PM, INTERSTATE 90 BY 10PM, AND HIGHWAY 20 BY 3AM
MONDAY. BEHIND THE FRONT GUSTY NORTHERLY WINDS WILL DEVELOP WITH
GUSTS UPWARDS OF 30 MPH.
TEMPERATURES COOL INTO THE 40S ON MONDAY WITH A LIGHT NORTH WIND.
TODAY
MAX TEMPERATURE.....AROUND 58.
MIN HUMIDITY........27 PERCENT.
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY COVER.......PC PC PC PC PC PC PC MC PC PC PC MCR
SKY (%).........28 42 40 38 36 41 47 52 44 36 28 25
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............29 30 33 38 43 47 51 54 56 57 58 57
DEWPOINT........20 21 22 23 25 26 26 26 25 24 24 24
RH..............69 67 62 55 49 43 38 34 30 28 27 27
20 FT WIND DIR..WSW WSW WSW W W W W W W W W W
20 FT WIND SPD..6 7 8 10 12 13 13 13 14 15 15 15
20 FT WIND GUST. 13 16 18 21 22 21 21 20 20 20 20
MIX HGT (KFT)...0.4 0.4 0.4 0.7 1.3 2.4 3.4 4.5 5.3 6.1 7.0 7.3
TRANSP WIND DIR.W W W W W W W W W W W W
TRANSP WIND SPD.12 13 15 16 18 17 18 20 21 21 21 21
SMOKE DISPERSAL.PR PR PR PR FR GD GD EX EX EX EX EX
TONIGHT
MIN TEMPERATURE.....AROUND 25.
MAX HUMIDITY........72 PERCENT.
TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY COVER.......MCR MCR MCR MCR MCR MCR MCR MCR MCR MCR MCR MCR
SKY (%).........23 21 19 17 15 13 11 9 13 16 20 17
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............56 55 51 48 45 42 40 37 35 32 30 28
DEWPOINT........24 25 25 27 28 29 29 29 27 24 21 19
RH..............29 31 36 44 51 60 64 72 72 72 69 68
20 FT WIND DIR..WNW WNW WNW WNW WNW NW NNW N N N N N
20 FT WIND SPD..14 13 10 9 9 12 14 17 17 17 17 17
20 FT WIND GUST.20 20 15 14 14 18 24 30 31 30 29 28
MIX HGT (KFT)...5.4 1.2 0.8 0.6 0.5 0.6 0.9 1.0 1.1 1.3 1.7 2.0
TRANSP WIND DIR.W W W W WNW N N N N N NNE NNE
TRANSP WIND SPD.18 14 14 12 12 15 20 21 24 23 24 23
SMOKE DISPERSAL.EX FR PR PR PR PR FR FR FR FR GD GD
MONDAY
MAX TEMPERATURE.....AROUND 39.
MIN HUMIDITY........35 PERCENT.
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY COVER.......MCR MCR MCR MCR MCR MCR MCR MCR MCR MCR CLR MCR
SKY (%).........15 13 14 14 15 13 12 10 9 7 5 6
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............27 27 27 28 29 31 32 33 35 37 38 38
DEWPOINT........17 16 15 15 14 14 13 13 13 13 13 13
RH..............65 63 60 58 53 49 45 43 40 37 35 35
20 FT WIND DIR..NNE NNE NNE NNE NNE NNE N N N N N N
20 FT WIND SPD..17 17 17 17 17 16 16 16 15 14 14 13
20 FT WIND GUST.26 25 24 23 22 21 20 18 17 17 16 16
MIX HGT (KFT)...2.4 2.6 2.7 3.0 3.3 3.7 4.0 4.4 4.5 4.6 4.7 4.5
TRANSP WIND DIR.NNE NNE N N N N N N N N N N
TRANSP WIND SPD.24 24 22 21 20 20 18 16 15 15 14 13
SMOKE DISPERSAL.GD GD GD GD GD EX EX EX GD GD GD GD
FORECASTER...DUX
REQUESTED BY...CHRIS LARUE
TYPE OF REQUEST...PRESCRIBED
.TAG 2508886.0/FSD
.DELDT 04/06/25
.FORMATTERVERSION 2.0.0
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