153
FNUS73 KFSD 032131
FWSFSD
SPOT FORECAST FOR WILDFIRE ON CLAY COUNTY AND UNION COUNTY SOUTH...VERMILLION FIRE DEPARTMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
431 PM CDT SUN MAY 3 2026
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
TEMPERATURES HAVE WARMED TO 73 DEGREES THIS AFTERNOON. WITH A DEW
POINT OF 37 DEGREES, HUMIDITY VALUES HAVE FALLEN TO NEAR CRITICAL
VALUES, DOWN TO ABOUT 27 PERCENT. CURRENT WIND SPEED IS ABOUT 12
MPH OUT OF THE NORTHWEST WITH AN OCCASIONAL GUST UP TO ABOUT 20
MPH. THESE WINDS AND HUMIDITY VALUES WILL PERSIST FOR THE REST OF
THE AFTERNOON HOURS. COME THIS EVENING, HUMIDITY VALUES WILL BE
INCREASING TO ABOVE CRITICAL LEVELS BUT WINDS LOOK TO STAY
ELEVATED. WINDS WILL ACTUALLY TURN TO OUT OF THE SOUTHWEST DURING
THE EVENING HOURS WITH SPEEDS OF ABOUT 5 TO 10 MPH. LITTLE IF ANY
GUSTS ARE EXPECTED DURING THIS PERIOD OF TIME. AFTER MIDNIGHT,
WINDS WILL REMAIN OUT OF THE SOUTHWEST BUT GUSTS WILL RESTRENGTHEN
UP TO ABOUT 20 MPH.
REST OF TODAY
MAX TEMPERATURE.....AROUND 74.
MIN HUMIDITY........24 PERCENT.
TIME (CDT) 5PM
SKY COVER.......MCR
SKY (%).........14
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF PCPN (%).0
CHC OF THDR (%).0
TEMP............73
DEWPOINT........34
RH..............24
20 FT WIND DIR..WNW
20 FT WIND SPD..10
20 FT WIND GUST.16
MIX HGT (KFT)...8.2
TRANSP WIND DIR.WNW
TRANSP WIND SPD.18
SMOKE DISPERSAL.EX
TONIGHT
MIN TEMPERATURE.....AROUND 47.
MAX HUMIDITY........67 PERCENT.
TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY COVER.......CLR MCR MCR MCR MCR MCR MCR MCR MCR MCR MCR PC
SKY (%).........5 9 16 25 19 13 9 11 14 19 24 36
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 10 10 10 10 10 10 10 10 10 10 10
TEMP............73 71 68 63 60 57 54 52 51 51 50 50
DEWPOINT........34 35 35 36 37 36 37 37 37 37 37 37
RH..............24 27 29 37 43 46 52 56 59 60 61 62
20 FT WIND DIR..WNW WNW W SW SSW SSW SSW SSW SSW SSW SSW SW
20 FT WIND SPD..9 8 6 6 6 6 6 6 7 7 9 9
20 FT WIND GUST.15 14 10 8 8 8 9 10 12 13 14 15
MIX HGT (KFT)...8.1 7.0 0.7 0.7 0.4 0.4 0.5 0.5 0.5 0.5 0.5 0.5
TRANSP WIND DIR.WNW W W WSW SSW SSW SSW SSW SSW SW SW SW
TRANSP WIND SPD.17 15 7 7 8 8 8 10 12 10 13 14
SMOKE DISPERSAL.EX EX PR PR PR PR PR PR PR PR PR PR
MONDAY
MAX TEMPERATURE.....AROUND 74.
MIN HUMIDITY........26 PERCENT.
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY COVER.......PC PC PC PC MCR MCR MCR MCR MCR MCR PC PC
SKY (%).........33 29 33 30 11 10 11 17 15 23 34 40
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0 0 0 10 10 10 10
CHC OF THDR (%).10 0 0 0 0 0 0 10 10 10 10 10
TEMP............49 49 54 60 67 70 72 72 73 72 71 70
DEWPOINT........38 38 39 41 43 42 41 41 39 37 36 34
RH..............64 66 57 49 41 36 34 32 29 28 28 26
20 FT WIND DIR..SW SW WSW W WNW NW NW NNW NNW NNW NNW NNW
20 FT WIND SPD..10 10 13 14 16 18 18 18 21 21 22 22
20 FT WIND GUST.16 17 20 21 23 24 26 26 29 30 30 31
MIX HGT (KFT)...0.5 0.5 0.7 1.5 2.3 3.7 4.5 5.4 5.9 6.4 6.3 6.3
TRANSP WIND DIR.WSW WSW W W WNW NW NNW NNW NNW NW NW NW
TRANSP WIND SPD.14 13 15 22 24 22 22 24 24 26 28 29
SMOKE DISPERSAL.PR PR PR FR GD EX EX EX EX EX EX EX
FORECASTER...MEYERS
REQUESTED BY...TONY KLUNDER
TYPE OF REQUEST...WILDFIRE
.TAG 2612582.0/FSD
.DELDT 05/03/26
.FORMATTERVERSION 2.0.0
.EMAIL LAYNE.STEWART@CLAYCOUNTYOEM.ORG
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page