FNUS73 KFSD 041138 FWSFSD SPOT FORECAST FOR RUSH LAKE E...U.S. FISH & WILDLIFE SERVICE NATIONAL WEATHER SERVICE SIOUX FALLS SD 638 AM CDT WED APR 4 2012 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... SURFACE HIGH PRESSURE WILL MOVE EASTWARD ACROSS ONTARIO TODAY...WITH AN UPPER LEVEL LOW FOUND ACROSS THE SOUTHERN PLAINS. THE SURFACE HIGH WILL GIVE NORTHEAST WINDS THIS MORNING...GRADUALLY VEERING TO THE EAST BY EARLY AFTERNOON. WIND SPEEDS SHOULD BE MODERATE...INCREASING TO THE 13 TO 20 MPH RANGE IN THE AFTERNOON. MIXING HEIGHTS ARE FAIRLY HIGH TODAY DUE TO LOW LEVEL DRY AIR. THEREFORE SMOKE DISPERSION SHOULD NOT BE A PROBLEM. ON THURSDAY...WINDS WILL BE FROM EAST TO SOUTHEAST INCREASING TO 15 TO 20 MPH BY AFTERNOON. MINIMUM HUMIDITY VALUES TODAY SHOULD BE NEAR 26 PERCENT...AND ON THURSDAY NEAR 30 PERCENT. SINCE THE WINDS THIS AFTERNOON WILL BE FROM THE EAST...THERE MAY BE A BIT HIGHER HUMIDITY VALUES ON THE WEST SIDE OF THE LAKE. .TODAY... MAX TEMPERATURE.....60-65. MIN HUMIDITY........26 PERCENT. TIME (CDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY COVER.......PC PC PC PC PC PC PC PC PC PC PC PC % SKY COVER.....44 42 41 39 37 36 34 37 39 41 44 46 WEATHER COV..... WEATHER TYPE.... TEMP............38 39 45 51 54 57 59 61 63 63 63 62 RH..............73 70 55 44 40 35 33 29 26 26 26 28 DEWPOINT........30 30 30 30 30 30 30 29 28 28 28 29 20 FT WIND DIR..NNE NNE NE NE ENE ENE E E E E E E 20 FT WIND SPD..6 7 7 8 9 12 13 14 14 14 13 12 20 FT WIND GUST. 10 10 10 15 15 20 20 20 15 15 SMOKE DISPERSAL.PR PR PR FR FR GD GD GD EX EX EX GD CHC OF PCPN (%).0 0 0 0 0 0 10 10 10 10 10 10 MIX HGT (KFT)...0.3 0.5 0.7 0.9 1.8 2.6 3.5 4.0 4.5 5.0 4.9 4.8 TRANSP WIND DIR.NE NE ENE ENE E E E E E E E E TRANSP WIND SPD.7 13 17 21 21 20 18 18 18 18 17 16 HAINES INDEX....4 4 4 4 4 4 4 4 4 4 4 5 .TONIGHT... MIN TEMPERATURE.....37-42. MAX HUMIDITY........76 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.....48 49 49 50 43 35 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............60 55 50 46 43 41 RH..............32 40 50 60 67 73 DEWPOINT........30 31 32 33 33 33 20 FT WIND......E 10 E 9 E 9 E 8 E 9 E 9 20 FT WIND GUST.15 10 10 10 10 10 SMOKE DISPERSAL.GOOD FAIR POOR POOR POOR POOR CHC OF PCPN (%).0 0 0 0 0 0 .THURSDAY... MAX TEMPERATURE.....56-61. MIN HUMIDITY........30 PERCENT. TIME (CDT) 7 AM 9 AM 11 AM 1 PM 3 PM 5 PM SKY COVER.......PCLDY PCLDY MCLEAR MCLEAR MCLEAR MCLEAR % SKY COVER.....28 26 24 22 19 16 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............40 45 51 56 59 59 RH..............76 60 48 38 32 30 DEWPOINT........33 32 32 31 29 28 20 FT WIND......E 10 E 12 ESE 13 ESE 13 ESE 14 ESE 14 20 FT WIND GUST. 15 15 15 20 20 SMOKE DISPERSAL.POOR POOR FAIR GOOD GOOD GOOD CHC OF PCPN (%).0 0 0 0 0 0 MIX HGT (FT)....300 800 1900 3600 4400 4500 TRANSPORT WIND..E 12 ESE 17 ESE 20 ESE 17 ESE 16 ESE 17 HAINES INDEX....3 3 3 3 3 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...ERIC EARHART TYPE OF REQUEST...PRESCRIBED .TAG 20120404.RUSHL.01/FSD