FNUS73 KFSD 281220 FWSFSD SPOT FORECAST FOR CHRISTOPHERSON SLOUGH...USFWS NATIONAL WEATHER SERVICE SIOUX FALLS SD 720 AM CDT TUE APR 28 2009 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...AS A SURFACE RIDGE OF HIGH PRESSURE MOVES EAST OF THIS AREA...THE SURFACE WINDS WILL BECOME SOUTHEAST. LIGHT NORTHEAST WINDS THIS MORNING WILL TRANSITION AND INCREASE OUT OF THE SOUTHEAST AS THE DAY PROGRESSES. TONIGHT THROUGH WEDNESDAY NIGHT WILL THEN BE MARKED BY UNSETTLED WEATHER. A SERIES OF UPPER AIR DISTURBANCES WILL MOVE THROUGH THIS AREA IN A WAVY PATTERN. THESE DISTURBANCES WILL GIVE GOOD CHANCES FOR WETTING RAINS IN THE FORM OF SHOWERS AND THUNDERSTORMS...WITH WEDNESDAY LIKELY BEING A DAMP DAY MOST LOCATIONS. THE SURFACE COLD FRONT WILL MOVE THROUGH THIS FORECAST AREA WEDNESDAY NIGHT...WITH LINGERING LIGHT PRECIPITATION CHANCES ONLY IN SOUTHWEST MINNESOTA...NORTHWEST IOWA AND EXTREME SOUTHEAST SOUTH DAKOTA ON THURSDAY. FRIDAY COULD SEE A FEW LIGHT SHOWERS ALONG AND SOUTH OF I 90...BUT THOSE CHANCES ARE PRETTY QUESTIONABLE. LIGHT SHOWERS OR NO...THURSDAY AND FRIDAY WILL BE SEASONABLY COOL. .TODAY... MAX TEMPERATURE.....59-64. MIN HUMIDITY........33 PERCENT. TIME (CDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM SKY.............CLR CLR CLR CLR MCR MCR PC PC MCR MCR MCR WEATHER TYPE.... TEMP (F)........34 38 44 46 49 52 55 58 60 62 62 RH (%)..........82 76 62 60 56 48 43 39 36 33 33 DEWPOINT (F)....29 31 32 33 34 33 33 33 33 33 33 20 FT WIND DIR..ENE ENE E E E E E E ESE ESE ESE 20 FT WIND SPD..3 7 9 12 13 13 13 14 15 15 15 20 FT WIND GUST.5 10 15 15 15 15 20 20 20 20 DISPERSAL INDEX.PR PR PR FR GD GD GD GD GD GD EX CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 MIX HGT (KFT)...0.3 0.3 0.9 1.5 2.2 2.9 3.5 3.6 3.7 3.7 4.0 TRANSP WIND DIR.NE ENE E E ESE ESE ESE ESE ESE ESE ESE TRANSP WIND SPD.8 12 16 20 20 17 15 16 18 20 21 HAINES INDEX....3 3 3 3 3 2 2 2 2 2 2 .TONIGHT... MIN TEMPERATURE.....41-46. MAX HUMIDITY........79 PERCENT. TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM SKY.............MCLEAR PCLDY PCLDY MCLDY MCLDY MCLDY WEATHER COV..... CHANCE CHANCE WEATHER TYPE....NONE NONE NONE NONE TSTORM TSTORM TEMP (F)........61 57 52 50 48 46 RH (%)..........35 42 54 61 68 73 DEWPOINT (F)....33 34 36 37 38 38 20 FT WIND......ESE 14 ESE 12 ESE 10 SE 10 SE 10 SE 10 20 FT WIND GUST.20 15 15 15 15 15 DISPERSAL INDEX.EXCEL GOOD POOR POOR POOR POOR CHC OF PCPN (%).0 10 10 10 30 30 MIX HGT (FT)....4300 3100 300 300 300 300 TRANSPORT WIND..ESE 22 ESE 18 ESE 12 SE 12 SE 13 SE 13 HAINES INDEX....2 2 2 3 4 4 .WEDNESDAY... MAX TEMPERATURE.....55-60. MIN HUMIDITY........66 PERCENT. TIME (CDT) 6 AM 9 AM NOON 3 PM SKY.............MCLDY CLOUDY CLOUDY CLOUDY WEATHER COV.....CHANCE CHANCE CHANCE LIKELY WEATHER TYPE....TSTORM TSTORM TSTORM TSTORM TEMP (F)........45 48 54 57 RH (%)..........79 74 66 67 DEWPOINT (F)....39 40 43 46 20 FT WIND......ESE 9G10 ESE 14G20 ESE 17G25 ESE 17G25 DISPERSAL INDEX.POOR FAIR GOOD GOOD CHC OF PCPN (%).30 50 50 60 $$ FORECASTER...BT REQUESTED BY...CHAD LORETH TYPE OF REQUEST...PRESCRIBED .TAG 20090428.CHRIS.01/FSD