913
FNUS73 KFSD 151446
FWSFSD
SPOT FORECAST FOR GRUNFLUR WMA...MN DNR
NATIONAL WEATHER SERVICE SIOUX FALLS SD
946 AM CDT WED APR 15 2026
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
WINDS WILL BE LIGHT AND VARIABLE THIS MORNING, BECOMING
EAST-NORTHEASTERLY AROUND 5-10 MPH IN THE AFTERNOON. CAN'T RULE
OUT A PASSING SHOWER THIS AFTERNOON, BUT CHANCES ARE LOW, LESS
THAN 15%. OTHERWISE IT WILL BE WARM WITH HIGHS IN THE LOWER 70S
AND RELATIVE HUMIDITY VALUES DOWN TO AROUND 35% IN THE AFTERNOON.
WINDS REMAIN LIGHT AND VARIABLE AGAIN TONIGHT, BUT INCREASE
HEADING INTO THE DAY ON THURSDAY. THURSDAY WILL BE VERY WARM, DRY,
AND BREEZY LEADING TO A HIGH FIRE DANGER. RELATIVE HUMIDITY
VALUES DROP TO AS LOW AS 25-30% IN THE AFTERNOON WITH HIGHS IN
THE LOWER 80S AND SOUTHERLY WIND GUSTS UP TO 25 MPH.
REST OF TODAY
MAX TEMPERATURE.....AROUND 71.
MIN HUMIDITY........38 PERCENT.
TIME (CDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY COVER.......MC PC PC PC PC PC PC PC
SKY (%).........51 50 47 38 31 29 34 37
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF PCPN (%).0 10 10 10 10 10 10 10
CHC OF THDR (%).0 0 0 0 0 0 0 0
TEMP............53 56 60 64 67 69 70 71
DEWPOINT........46 46 46 46 45 44 44 44
RH..............77 69 60 52 45 40 39 38
20 FT WIND DIR..N NNE NE ENE ENE ENE E E
20 FT WIND SPD..3 5 6 6 6 6 6 6
20 FT WIND GUST.7 8 8 9 9 9 10 10
MIX HGT (KFT)...1.3 1.5 2.1 2.5 3.2 4.0 5.1 5.6
TRANSP WIND DIR.N NNE NNE NE NE NE NE E
TRANSP WIND SPD.6 5 6 6 6 7 8 8
SMOKE DISPERSAL.PR PR PR PR FR FR GD GD
TONIGHT
MIN TEMPERATURE.....AROUND 47.
MAX HUMIDITY........89 PERCENT.
TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY COVER.......PC PC PC PC PC MCR MCR MCR MCR MCR MCR CLR
SKY (%).........38 40 37 29 30 24 20 21 19 12 6 5
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF PCPN (%).10 10 10 10 0 0 0 0 0 0 0 0
CHC OF THDR (%).0 M M M M M M M M M M M
TEMP............69 68 65 61 58 56 53 52 51 50 49 48
DEWPOINT........45 46 47 47 47 47 47 47 45 44 44 44
RH..............42 45 52 60 67 72 80 83 80 80 83 86
20 FT WIND DIR..E E E E ESE ESE SSE S S SSW WSW SW
20 FT WIND SPD..6 6 6 6 6 6 6 6 6 6 6 6
20 FT WIND GUST.10 10 10 10 10 10 10 12 10 10 10 10
MIX HGT (KFT)...5.3 2.6 0.6 0.4 0.4 0.4 0.4 0.4 0.4 0.3 0.3 0.3
TRANSP WIND DIR.ESE ESE SE ESE SE SSE S S S S S S
TRANSP WIND SPD.7 9 8 10 10 10 10 10 10 9 9 10
SMOKE DISPERSAL.GD FR PR PR PR PR PR PR PR PR PR PR
THURSDAY
MAX TEMPERATURE.....AROUND 81.
MIN HUMIDITY........27 PERCENT.
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY COVER.......CLR CLR MCR MCR MCR CLR CLR CLR CLR CLR CLR CLR
SKY (%).........5 5 8 6 6 5 3 2 2 1 1 2
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0
CHC OF THDR (%).M M M M M M M M M M M M
TEMP............47 47 49 55 62 67 72 75 78 79 80 81
DEWPOINT........44 44 45 47 48 47 45 44 44 44 44 44
RH..............89 89 86 74 60 49 38 33 30 29 28 27
20 FT WIND DIR..SSW SW SSW S SSE SSE SSE S S S S S
20 FT WIND SPD..6 7 8 9 10 13 14 15 16 16 16 15
20 FT WIND GUST.12 12 13 15 17 20 21 22 23 23 23 22
MIX HGT (KFT)...0.3 0.3 0.5 0.8 1.4 2.6 3.6 4.7 5.1 5.5 6.0 4.6
TRANSP WIND DIR.S S S S S S S S SSW SSW SSW SSW
TRANSP WIND SPD.10 12 14 15 20 23 26 29 29 29 26 24
SMOKE DISPERSAL.PR PR PR PR FR GD EX EX EX EX EX EX
FORECASTER...SAMET
REQUESTED BY...CHAD AUGUST
TYPE OF REQUEST...PRESCRIBED
.TAG 2610424.0/FSD
.DELDT 04/15/26
.FORMATTERVERSION 2.0.0
.EMAIL CHAD.AUGUST@STATE.MN.US
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page