FNUS73 KFSD 081147 FWSFSD SPOT FORECAST FOR RUSH LAKE E...USFWS NATIONAL WEATHER SERVICE SIOUX FALLS SD 647 AM CDT FRI MAY 8 2009 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... SHOWERS AND A FEW THUNDERSTORMS WILL BE ASSOCIATED WITH AN UPPER LEVEL DISTURBANCE MOVING EAST OVER THE AREA THROUGH TODAY. A BRISK NORTHWEST FLOW OF COOLER AND GRADUALLY DRIER AIR WILL SPREAD EASTWARD LATER THIS AFTERNOON THROUGH SATURDAY. THEN A RIDGE OF HIGH PRESSURE WILL WORK ITS WAY SOUTHEAST OVER THE AREA FROM SUNDAY INTO MONDAY...FOLLOWED BY AN INCREASING SOUTHERLY FLOW OF WARMER AND MORE MOIST AIR MONDAY AFTERNOON THROUGH TUESDAY. .TODAY... MAX TEMPERATURE.....61-66. MIN HUMIDITY........50 PERCENT. TIME (CDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM SKY.............PC PC PC MC MC MC MC MC MC MC MC WEATHER COV..... CHC CHC CHC OCL OCL OCL OCL OCL WEATHER TYPE.... RW RW RW RW RW RW RW RW TEMP (F)........47 49 52 54 57 59 62 63 62 60 59 RH (%)..........73 72 70 68 65 61 57 55 57 59 60 DEWPOINT (F)....39 41 42 44 45 46 47 47 46 46 45 20 FT WIND DIR..N NNE ENE E E ESE SE S WSW WNW WNW 20 FT WIND SPD..7 7 7 7 7 7 8 8 9 12 14 20 FT WIND GUST.10 10 10 10 10 10 10 10 10 15 15 DISPERSAL INDEX.PR PR PR PR PR FR FR FR FR GD GD CHC OF PCPN (%).10 10 10 40 40 40 80 80 80 80 80 MIX HGT (KFT)...0.3 0.4 0.5 0.7 1.5 2.3 3.1 3.3 3.6 3.9 3.8 TRANSP WIND DIR.E E E E E ENE ENE NE NNE NNE N TRANSP WIND SPD.6 7 9 10 10 10 9 10 10 12 13 HAINES INDEX....5 5 5 5 5 5 5 4 4 3 3 .TONIGHT... MIN TEMPERATURE.....37-42. MAX HUMIDITY........82 PERCENT. TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM SKY.............MCLDY MCLDY MCLDY MCLDY MCLDY PCLDY WEATHER COV.....OCNL CHANCE CHANCE CHANCE WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR NONE NONE TEMP (F)........58 55 53 49 46 44 RH (%)..........62 63 67 71 73 76 DEWPOINT (F)....45 43 42 40 38 37 20 FT WIND......NW 18 NW 23 NW 24 NW 25 NW 23 NW 18 20 FT WIND GUST.20 30 30 30 25 20 DISPERSAL INDEX.GOOD GOOD FAIR FAIR FAIR POOR CHC OF PCPN (%).80 50 50 50 10 10 $$ FORECASTER...RYRHOLM REQUESTED BY...ERIC EARHART TYPE OF REQUEST...PRESCRIBED .TAG 20090508.RUSHL.01/FSD