FNUS73 KFSD 231134 FWSFSD SPOT FORECAST FOR SPIRIT LAKE...U.S. FISH & WILDLIFE SERVICE NATIONAL WEATHER SERVICE SIOUX FALLS SD 634 AM CDT MON APR 23 2012 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... HIGH PRESSURE WILL SLOWLY MOVE SOUTH TODAY. WINDS WILL BEGIN PRIMARILY OUT OF WEST AT LESS THAN 5 MPH...ALTHOUGH WINDS PRIOR TO 10 AM MAY VARY FROM WEST NORTHWEST TO WEST. THEN WINDS WILL BECOME WEST AND REMAIN WEST THROUGH THE MORNING. WINDS WILL SLOWLY BACK TO WEST SOUTHWEST AND GRADUALLY BACK TO WEST SOUTHWEST THROUGH THE MORNING AND INCREASE TO AROUND 10 MPH. TEMPERATURES WILL WARM QUICKLY THIS MORNING WITH THE RELATIVE HUMIDITY FALLING TO 30 TO 35 PERCENT BY MID AFTERNOON. A STRONG INVERSION EARLY THIS MORNING WILL KEEP MIXING HEIGHTS BELOW 1000 FEET THROUGH 9 AM. THE INVERSION SHOULD RISE RAPIDLY AFTER 9 AM WITH THE MIXING HEIGHT REACHING OVER 4000 FEET BY EARLY THIS AFTERNOON. .TODAY... MAX TEMPERATURE.....62-67. MIN HUMIDITY........34 PERCENT. TIME (CDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY COVER.......CLR MCR MCR PC PC PC PC PC PC PC PC PC % SKY COVER.....3 7 16 27 36 40 42 44 45 46 46 45 WEATHER COV.....PTY WEATHER TYPE....FST TEMP............33 37 44 52 56 58 60 62 63 64 65 65 RH..............92 85 70 54 49 45 42 38 36 34 34 34 DEWPOINT........31 33 35 36 37 37 37 36 36 35 36 36 20 FT WIND DIR..W W W W W W WSW WSW WSW WSW WSW SW 20 FT WIND SPD..4 4 6 6 6 7 7 8 9 9 9 9 20 FT WIND GUST. 10 10 10 10 10 SMOKE DISPERSAL.PR PR PR PR FR FR GD GD GD GD GD GD .TONIGHT... MIN TEMPERATURE.....42-47. 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 MCLEAR % SKY COVER.....45 40 35 31 27 23 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............63 58 53 51 49 46 RH..............38 45 54 59 63 73 DEWPOINT........37 37 37 37 37 38 20 FT WIND......SSW 9 SSW 8 SSW 8 S 7 S 8 S 8 20 FT WIND GUST.10 10 10 10 10 SMOKE DISPERSAL.GOOD FAIR POOR POOR POOR POOR .TUESDAY... MAX TEMPERATURE.....76-81. MIN HUMIDITY........31 PERCENT. TIME (CDT) 7 AM 10 AM 1 PM 4 PM SKY COVER.......MCLEAR MCLEAR PCLDY PCLDY % SKY COVER.....20 25 30 33 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE TEMP............46 63 75 79 RH..............76 44 33 31 DEWPOINT........39 41 44 46 20 FT WIND......S 8G10 SSE 8G10 SE 8G10 SE 9G10 SMOKE DISPERSAL.POOR POOR FAIR FAIR 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...SCHUMACHER REQUESTED BY...ERIC EARHART TYPE OF REQUEST...PRESCRIBED .TAG 20120423.SPIRI.01/FSD