FNUS73 KFSD 151329 FWSFSD SPOT FORECAST FOR HOLTHE PRAIRIE SNA...MN DNR NATIONAL WEATHER SERVICE SIOUX FALLS SD 829 AM CDT WED MAY 15 2013 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... HIGH BASED SHOWERS AND ISOLATED THUNDERSTORMS WILL MOVE ACROSS THE REGION THIS MORNING...WITH THE BEST CHANCE FOR AREAS OF LIGHT RAINFALL AND SPORADIC LIGHTNING STRIKES IN AREAS NORTH OF THE INTERSTATE 90 CORRIDOR. THE SHOWERS ARE EXPECTED TO DIMINISH TOWARD MIDDAY...WITH LINGERING CLOUDS GRADUALLY DECREASING THROUGH THE AFTERNOON. UNFORTUNATELY WIND DIRECTIONS ARE EXTREMELY CHALLENGING TODAY AROUND THE WINDOM AREA. THERE IS HIGH PRESSURE EXTENDING FROM HURON SD TO NEAR WINDOM MN. THIS MEANS SINCE YOU ARE IN THE SURFACE RIDGE AXIS THAT WINDS WILL BE LIGHT AND THEY COULD BE RATHER VARIABLE. AT THIS TIME...IT IS ANTICIPATED THAT THE SURFACE RIDGE WILL BE JUST NORTH OF YOUR AREA...KEEPING A NORTHERLY COMPONENT TO YOUR LIGHT WINDS. HOWEVER IF THE HIGH WOULD SHIFT A LITTLE SOUTHWARD...ONLY BY A FEW MILES...YOUR AFTERNOON WINDS COULD GO LIGHT SOUTHEAST. SO IT IS VERY TRICKY. BUT ONCE AGAIN...THE WINDS WILL BE LIGHT...LIKELY CREATING A VERTICAL SMOKE COLUMN. SMOKE DISPERSAL WILL BE FAIR TO POOR TODAY BECAUSE OF THE LIGHT WINDS. ALTHOUGH TEMPERATURES TODAY WILL BE COOLER THAN YESTERDAY...HUMIDITY LEVELS WILL REMAIN ON THE DRY SIDE FOR ONE MORE DAY WITH MINIMUM AFTERNOON HUMIDITY VALUES AROUND 25 PERCENT. MOISTURE WILL GRADUALLY INCREASE ACROSS THE AREA THROUGH THE LATTER PART OF THIS WEEK AND INTO THE WEEKEND...ACCOMPANIED BY INCREASING CHANCES FOR SHOWERS AND THUNDERSTORMS. .TODAY... MAX TEMPERATURE.....73-78. MIN HUMIDITY........25 PERCENT. TIME (CDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY COVER.......PC MC MC MC MC MC MC MC MC MC PC PC % SKY COVER.....46 52 58 64 64 64 64 60 56 51 45 38 WEATHER COV..... SCH SCH SCT ISO WEATHER TYPE.... TSM TSM RW RW TEMP............54 61 64 66 69 70 71 73 74 75 76 75 RH..............62 49 45 40 36 33 31 29 27 26 25 26 DEWPOINT........42 42 42 41 41 40 39 39 38 38 38 39 20 FT WIND DIR..N N NNE NNE NNE NE NE NNE NNW NW NW WNW 20 FT WIND SPD..3 3 6 7 7 6 6 5 3 2 3 3 20 FT WIND GUST.5 5 5 5 5 SMOKE DISPERSAL.PR PR FR FR FR FR FR FR PR PR PR PR CHC OF PCPN (%).10 20 20 30 20 10 10 10 10 10 10 10 MIX HGT (KFT)...0.3 0.9 1.6 2.3 2.9 3.5 4.1 4.3 4.5 4.6 4.5 4.4 TRANSP WIND DIR.NNW N NNE NE NE NE NE N NW W W W TRANSP WIND SPD.8 12 14 15 13 10 7 5 3 2 2 3 HAINES INDEX....5 5 5 5 5 5 5 5 4 4 4 4 .TONIGHT... MIN TEMPERATURE.....49-54. MAX HUMIDITY........71 PERCENT. TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY COVER.......PCLDY PCLDY PCLDY PCLDY PCLDY PCLDY % SKY COVER.....31 32 32 33 34 36 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............74 69 63 58 54 52 RH..............28 35 44 57 64 69 DEWPOINT........39 40 41 43 42 42 20 FT WIND......WNW 5 S 3 S 2 S 3 S 2 SSE 1 20 FT WIND GUST. 5 5 SMOKE DISPERSAL.POOR POOR POOR POOR POOR POOR CHC OF PCPN (%).10 0 0 0 10 10 .THURSDAY... MAX TEMPERATURE.....74-79. MIN HUMIDITY........31 PERCENT. TIME (CDT) 7 AM 9 AM 11 AM 1 PM 3 PM 5 PM SKY COVER.......PCLDY PCLDY PCLDY MCLDY MCLDY MCLDY % SKY COVER.....38 43 49 55 59 64 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............54 65 74 77 77 76 RH..............66 48 35 32 31 33 DEWPOINT........43 45 45 45 44 45 20 FT WIND......SE 1 SE 6 ESE 9 ESE 12 ESE 12 ESE 12 20 FT WIND GUST. 10 15 15 15 SMOKE DISPERSAL.POOR POOR GOOD EXCEL EXCEL EXCEL CHC OF PCPN (%).10 10 10 10 10 10 MIX HGT (FT)....300 1400 2900 4900 5500 5000 TRANSPORT WIND..SE 2 SE 12 SE 17 SE 18 SE 23 SE 24 HAINES INDEX....6 5 4 5 4 3 WEATHER TYPE ABBREVIATIONS 1) T = THUNDERSTORMS 2) R = RAIN 3) RW = RAIN SHOWERS 4) L = DRIZZLE 5) ZR = FREEZING RAIN 6) ZL = FREEZING DRIZZLE 7) S = SNOW 8) SW = SNOW SHOWERS 9) IP = ICE PELLETS 10) F = FOG 11) ZF = FREEZING FOG 12) IC = ICE CRYSTALS 13) H = HAZE 14) BS = BLOWING SNOW 15) K = SMOKE 16) BD = BLOWING DUST 17) FR = FROST $$ FORECASTER...MJF REQUESTED BY...BRAD BOLDUAN TYPE OF REQUEST...PRESCRIBED .TAG 20130515.HOLTH.01/FSD