648
FNUS73 KFSD 201150
FWSFSD
SPOT FORECAST FOR TABLE MARSH SOUTH OF 141...IOWA DNR
NATIONAL WEATHER SERVICE SIOUX FALLS SD
650 AM CDT FRI MAR 20 2026
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
WINDS THIS MORNING WILL BE LIGHT (GUSTS AROUND 10 MPH), WITH ANY
PREVAILING DIRECTION NORTH-NORTHWEST TO NORTHWEST INTO THE
AFTERNOON HOURS. TEMPERATURES WILL WARM QUICKLY FROM THE UPPER 30S
INTO THE MID 60S BY NOON WITH A HIGH IN THE UPPER 70S. RELATIVE
HUMIDITY VALUES DECREASE TO AROUND 35% LATER TODAY. SKIES SHOULD
BE MOSTLY CLEAR WITH HIGH CLOUDS OVER THE AREA. POOR MIXING IS
EXPECTED THROUGH THE MORNING HOURS, INCREASING AFTER MID DAY.
WIND DIRECTION SHIFTS TO THE SOUTH THROUGH THE EVENING HOURS, BUT
SPEEDS REMAIN LIGHT (AROUND 5 MPH). MOSTLY CLEAR SKIES WITH AGAIN
HIGH CLOUDS TONIGHT AND LOWS IN THE MID 40S. MUCH WARMER ON
SATURDAY WITH HIGHS IN THE UPPER 80S WITH HUMIDITY VALUES AROUND
25%. WINDS OUT OF THE SOUTH SATURDAY MAY GUST AROUND 20 MPH IN THE
AFTERNOON.
REST OF TODAY
MAX TEMPERATURE.....AROUND 78.
MIN HUMIDITY........34 PERCENT.
TIME (CDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY COVER.......MCR MCR MCR MCR MCR MCR PC MCR
SKY (%).........17 18 16 14 19 22 27 25
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0 0 0
CHC OF THDR (%).0 0 0 0 0 0 0 0
TEMP............55 61 66 70 74 76 78 78
DEWPOINT........42 45 48 49 48 48 47 48
RH..............61 56 52 47 40 37 34 35
20 FT WIND DIR..NNW NNW NNW NW NW NW NW NW
20 FT WIND SPD..6 6 6 6 7 8 8 6
20 FT WIND GUST.9 9 10 12 12 13 13 12
MIX HGT (KFT)...0.6 0.8 1.2 1.7 2.0 2.8 3.4 3.8
TRANSP WIND DIR.N N NNW NNW NW WNW WNW WNW
TRANSP WIND SPD.9 8 7 8 9 10 13 13
SMOKE DISPERSAL.PR PR PR PR FR FR GD GD
TONIGHT
MIN TEMPERATURE.....AROUND 45.
MAX HUMIDITY........83 PERCENT.
TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY COVER.......PC MCR MCR MCR MCR MCR MCR MCR MCR MCR MCR MCR
SKY (%).........32 23 18 10 10 11 10 12 10 13 15 22
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............76 74 69 63 60 58 56 54 52 51 49 48
DEWPOINT........47 48 47 47 47 46 46 44 44 43 43 42
RH..............36 40 45 56 62 64 69 69 74 74 80 80
20 FT WIND DIR..NW NNW ENE ESE SSW SE SE SSE SSE S S SSE
20 FT WIND SPD..6 5 3 3 2 3 3 3 3 5 5 5
20 FT WIND GUST.9 8 7 7 6 6 6 7 7 7 8 8
MIX HGT (KFT)...2.3 0.6 0.5 0.4 0.3 0.4 0.4 0.4 0.4 0.4 0.4 0.4
TRANSP WIND DIR.WNW NW NNE SSW SW W W SW SW SSW SSW SSW
TRANSP WIND SPD.9 6 7 7 7 6 6 5 5 5 6 7
SMOKE DISPERSAL.FR PR PR PR PR PR PR PR PR PR PR PR
SATURDAY
MAX TEMPERATURE.....AROUND 87.
MIN HUMIDITY........24 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 MCR MCR
SKY (%).........13 13 10 15 19 18 18 17 15 12 10 9
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............47 46 48 53 60 66 73 79 83 86 87 86
DEWPOINT........42 41 41 42 44 45 46 46 46 46 46 46
RH..............83 83 77 66 55 47 38 31 27 25 24 25
20 FT WIND DIR..S S SSE S SSW SSW SSW SSW SSW S S S
20 FT WIND SPD..6 6 6 6 6 7 8 9 10 12 12 10
20 FT WIND GUST.8 9 9 10 12 13 14 15 16 17 18 18
MIX HGT (KFT)...0.4 0.4 0.4 0.4 0.6 0.8 1.1 1.5 2.3 3.2 4.0 2.9
TRANSP WIND DIR.SSW SW SSW SSW WSW W W W WSW SW SSW SSW
TRANSP WIND SPD.9 12 12 12 12 9 9 9 10 12 12 12
SMOKE DISPERSAL.PR PR PR PR PR PR PR PR FR FR GD FR
FORECASTER...SG
REQUESTED BY...JOHNATHAN MCANDREWS
TYPE OF REQUEST...PRESCRIBED
.TAG 2606662.0/FSD
.DELDT 03/20/26
.FORMATTERVERSION 2.0.0
.EMAIL JOHNATHAN.MCANDREWS@DNR.IOWA.GOV
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