855
FNUS73 KFSD 051300
FWSFSD
SPOT FORECAST FOR WATERMAN PRAIRIE - NELSON...IOWA DNR
NATIONAL WEATHER SERVICE SIOUX FALLS SD
800 AM CDT TUE MAY 5 2026
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
HEADING INTO NORTHWESTERN IA, A MILD AND MOSTLY CLOUDY DAY IS
AHEAD WITH HIGHS MAINLY IN THE MID 50S FOR THE DAY. AS MIXING
INCREASES, SMOKE DISPERSAL SHOULD GRADUALLY IMPROVE WITH
STRENGTHENING NORTHWESTERLY WINDS. WIND GUSTS BETWEEN 15-25 MPH
WILL BE POSSIBLE. DRIER CONDITIONS WILL RETURN THIS AFTERNOON
WITH RELATIVE HUMIDITY VALUES IN THE 25-35 PERCENT RANGE WITH THE
DRIEST CONDITIONS EXPECTED BETWEEN 3PM TO 6PM.
TODAY
MAX TEMPERATURE.....AROUND 56.
MIN HUMIDITY........27 PERCENT.
TIME (CDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY COVER.......MC MC PC MC MC MC MC MC MC MC
SKY (%).........61 55 49 60 61 59 57 57 51 60
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0
TEMP............42 46 48 51 53 54 55 55 55 55
DEWPOINT........27 27 26 26 25 25 24 24 24 23
RH..............55 47 42 37 33 32 30 30 30 29
20 FT WIND DIR..NW NW NW NW NW NW NW WNW NW NW
20 FT WIND SPD..6 7 9 12 13 13 14 15 15 15
20 FT WIND GUST.10 12 14 16 18 20 20 21 22 21
MIX HGT (KFT)...1.2 3.1 5.6 6.9 7.6 8.0 8.5 8.5 8.7 8.6
TRANSP WIND DIR.N NNW NW NW WNW WNW WNW WNW WNW NW
TRANSP WIND SPD.10 14 18 20 20 20 20 21 20 20
SMOKE DISPERSAL.PR GD EX EX EX EX EX EX EX EX
TONIGHT
MIN TEMPERATURE.....AROUND 32.
MAX HUMIDITY........75 PERCENT.
TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY COVER.......MC MC MC MC MC MC MC MC PC PC PC MCR
SKY (%).........62 70 73 74 72 68 67 56 50 38 32 25
WEATHER COV..... WID WID
WEATHER TYPE.... FST FST
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............55 53 50 47 44 42 40 38 36 34 33 32
DEWPOINT........22 23 22 22 23 23 23 24 24 24 24 24
RH..............27 31 33 37 43 46 50 57 61 66 69 72
20 FT WIND DIR..NW NW NNW NNW N N N N N N N N
20 FT WIND SPD..14 14 12 10 7 6 6 5 5 3 3 3
20 FT WIND GUST.21 20 16 14 13 12 9 8 7 6 6 6
MIX HGT (KFT)...8.4 7.8 1.2 0.8 0.9 0.7 0.7 0.6 0.5 0.5 0.5 0.5
TRANSP WIND DIR.NW NW NNW NNW N N N N NNE NNE NNE NNE
TRANSP WIND SPD.21 20 17 15 14 13 10 12 9 9 7 7
SMOKE DISPERSAL.EX EX FR PR PR PR PR PR PR PR PR PR
WEDNESDAY
MAX TEMPERATURE.....AROUND 55.
MIN HUMIDITY........29 PERCENT.
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY COVER.......MCR MCR PC MCR MCR PC PC PC PC PC PC PC
SKY (%).........16 24 28 17 11 32 41 45 46 38 30 34
WEATHER COV.....WID WID
WEATHER TYPE....FST FST
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............32 33 38 42 46 49 51 52 53 54 55 55
DEWPOINT........25 25 26 26 26 25 25 24 24 24 24 24
RH..............75 72 62 53 45 39 36 33 32 31 30 30
20 FT WIND DIR..N N N NNW NW NW NW NW NW NW NW NW
20 FT WIND SPD..2 3 3 6 6 8 10 12 12 12 13 13
20 FT WIND GUST.6 6 6 8 10 13 15 16 17 17 17 17
MIX HGT (KFT)...0.5 0.5 1.3 3.5 6.1 7.1 7.6 7.8 8.1 7.9 7.7 7.5
TRANSP WIND DIR.N N NNW NW NW NW NW NW NW NW WNW WNW
TRANSP WIND SPD.6 6 6 10 15 16 16 15 15 15 16 17
SMOKE DISPERSAL.PR PR PR GD EX EX EX EX EX EX EX EX
FORECASTER...IG
REQUESTED BY...STEVEN BURKETT
TYPE OF REQUEST...PRESCRIBED
.TAG 2612757.0/FSD
.DELDT 05/05/26
.FORMATTERVERSION 2.0.0
.EMAIL STEVEN.BURKETT@DNR.IOWA.GOV
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