589
FNUS73 KFSD 121150
FWSFSD
SPOT FORECAST FOR DC RAPAICH...IOWA DNR
NATIONAL WEATHER SERVICE SIOUX FALLS SD
650 AM CDT FRI JUN 12 2026
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
HEADING INTO NORTHWESTERN IA, A WARMER DAY IS AHEAD AS HIGH TOP
OUT IN THE MID 80S FOR THE DAY. AS MIXING CONTINUES TO INCREASE,
SHOULD SEE SMOKE DISPERSAL RATES IMPROVE AND WESTERLY SURFACE WINDS
GRADUALLY STRENGTHEN. THE MAIN QUESTION IS HOW QUICKLY WINDS WILL
TURN TO THE SOUTHWEST AND FURTHER STRENGTHEN, MY CURRENT GUESS IS
SOMEWHERE AROUND 1-2 PM. NONETHELESS, SHOULD REMAIN MOSTLY DRY
WITH RELATIVE HUMIDITY VALUES AROUND 20-30 PERCENT THIS AFTERNOON.
LASTLY, NEXT CHANCES FOR RAIN WILL LIKELY COME OVERNIGHT INTO
SATURDAY MORNING.
TODAY
MAX TEMPERATURE.....AROUND 86.
MIN HUMIDITY........27 PERCENT.
TIME (CDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY COVER.......CLR MCR MCR CLR CLR CLR CLR CLR
SKY (%).........3 9 13 5 0 0 2 2
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............72 75 77 79 83 84 85 86
DEWPOINT........52 51 50 49 48 48 48 48
RH..............49 43 39 35 30 29 28 27
20 FT WIND DIR..W W W W WSW SSW SSW SSW
20 FT WIND SPD..10 10 10 10 10 10 10 13
20 FT WIND GUST.16 18 18 17 18 18 20 21
MIX HGT (KFT)...2.8 4.7 5.8 6.4 6.7 7.1 7.6 6.8
TRANSP WIND DIR.W W W W W SW SW SSW
TRANSP WIND SPD.16 17 17 15 14 14 17 20
SMOKE DISPERSAL.GD EX EX EX EX EX EX EX
TONIGHT
MIN TEMPERATURE.....AROUND 62.
MAX HUMIDITY........79 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 (%).........7 6 7 8 8 13 9 9 11 8 11 25
WEATHER COV..... SCH SCH CHC
WEATHER TYPE.... RW RW RW
TSTM COV........ SCH SCH
CHC OF PCPN (%).0 0 0 0 0 0 0 10 10 20 20 30
CHC OF THDR (%).0 0 0 0 0 0 0 10 10 10 20 20
TEMP............85 84 82 77 75 73 71 70 69 67 65 64
DEWPOINT........49 51 51 50 50 51 52 53 53 54 54 55
RH..............29 32 34 39 41 46 51 55 57 63 67 72
20 FT WIND DIR..SSW SSW S S S S S S S S SSW SSW
20 FT WIND SPD..14 16 16 17 17 17 17 15 12 9 7 7
20 FT WIND GUST.23 25 25 28 28 28 25 23 18 14 12 12
MIX HGT (KFT)...4.6 2.2 0.6 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.4 0.5
TRANSP WIND DIR.SSW SSW SSW S S S SSW S SSW SSW S SSW
TRANSP WIND SPD.21 20 17 20 20 20 20 16 13 10 9 9
SMOKE DISPERSAL.EX GD PR PR PR PR PR PR PR PR PR PR
SATURDAY
MAX TEMPERATURE.....AROUND 78.
MIN HUMIDITY........36 PERCENT.
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY COVER.......PC PC PC PC MCR PC PC PC MCR MCR MCR MCR
SKY (%).........31 38 34 29 24 35 42 40 22 19 16 19
WEATHER COV.....CHC SCH CHC SCH SCH SCH SCH
WEATHER TYPE....RW RW RW RW RW RW RW
TSTM COV........SCH
CHC OF PCPN (%).30 20 30 20 20 20 20 10 10 10 0 0
CHC OF THDR (%).20 10 10 10 10 10 10 10 10 10 0 0
TEMP............64 63 65 68 71 72 74 75 76 76 76 77
DEWPOINT........55 56 57 57 57 56 54 53 52 50 49 48
RH..............74 79 75 69 61 57 50 46 43 40 38 36
20 FT WIND DIR..SSW SSW SW N N N N N N N N NNW
20 FT WIND SPD..7 7 7 9 13 15 16 17 18 18 18 20
20 FT WIND GUST.10 12 12 14 17 21 23 24 25 26 26 28
MIX HGT (KFT)...0.5 0.5 1.1 1.3 2.3 2.9 3.6 4.6 4.9 5.0 4.8 5.3
TRANSP WIND DIR.SSW SW NE N N N N N N N NNW NNW
TRANSP WIND SPD.9 9 9 10 16 17 17 20 20 20 18 21
SMOKE DISPERSAL.PR PR PR PR GD GD GD EX EX EX EX EX
FORECASTER...IG
REQUESTED BY...JOHN MCANDREWS
TYPE OF REQUEST...PRESCRIBED
.TAG 2615403.0/FSD
.DELDT 06/12/26
.FORMATTERVERSION 2.0.0
.EMAIL JOHNATHAN.MCANDREWS@DNR.IOWA.GOV
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page