FNUS73 KFSD 041348 FWSFSD SPOT FORECAST FOR PURRINGTON...MN DNR NATIONAL WEATHER SERVICE SIOUX FALLS SD 848 AM CDT MON MAY 4 2009 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... HIGH PRESSURE WILL MOVE EAST OF THE AREA TODAY...ALLOWING LIGHT WINDS TO STEADILY INCREASE FROM THE SOUTHEAST. FAIRLY DRY SURFACE AIR STILL OVER THE AREA WILL ALLOW RELATIVE MUMIDITIES TO DROP TO NEAR 30 PERCENT THIS AFTERNOON. INCREASING MOSTURE WILL BRING SCATTERED SHOWERS AND THUNDERSTORMS BY LATE TONIGHT. .TODAY... MAX TEMPERATURE.....66-71. MIN HUMIDITY........31 PERCENT. TIME (CDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM SKY.............PC PC PC PC PC PC PC PC PC WEATHER TYPE.... TEMP (F)........51 56 60 62 65 67 68 68 67 RH (%)..........55 45 39 35 33 31 31 32 35 DEWPOINT (F)....35 35 35 35 35 36 36 37 38 20 FT WIND DIR..ESE ESE SE SSE S S S S S 20 FT WIND SPD..6 7 8 9 10 13 15 16 17 20 FT WIND GUST. 10 10 15 20 25 25 DISPERSAL INDEX.PR FR GD GD GD EX EX EX EX MIX HGT (KFT)...1.1 1.5 2.9 4.4 5.8 6.7 7.5 8.4 6.8 TRANSP WIND DIR.SE SE SSE S S S S S S TRANSP WIND SPD.13 15 15 14 14 14 16 17 20 HAINES INDEX....5 5 5 5 5 5 5 5 5 .TONIGHT... MIN TEMPERATURE.....47-52. MAX HUMIDITY........91 PERCENT. TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM SKY.............PCLDY MCLDY MCLDY MCLDY MCLDY MCLDY WEATHER COV..... CHANCE CHANCE CHANCE CHANCE WEATHER TYPE....NONE NONE RNSHWR RNSHWR TSTORM RNSHWR TEMP (F)........66 62 54 52 52 52 RH (%)..........37 46 67 72 76 83 20 FT WIND......S 16 S 15 S 14 S 15 S 16 S 16 20 FT WIND GUST.25 20 20 20 25 25 MIX HGT (FT)....5200 2500 300 300 300 300 TRANSPORT WIND..S 22 S 21 S 16 S 17 S 18 S 18 HAINES INDEX....4 4 4 3 3 3 .TUESDAY... MAX TEMPERATURE.....64-69. MIN HUMIDITY........52 PERCENT. TIME (CDT) 6 AM 9 AM NOON 3 PM SKY.............MCLDY MCLDY MCLDY PCLDY WEATHER COV.....CHANCE S CHC S CHC CHANCE WEATHER TYPE....RNSHWR RNSHWR RNSHWR TSTORM TEMP (F)........50 55 61 66 RH (%)..........91 75 62 54 20 FT WIND......S 15G20 SSW 14G20 SSW 16G25 S 14G20 MIX HGT (FT)....300 500 2100 3500 TRANSPORT WIND..S 17 SSW 20 S 22 S 23 HAINES INDEX....3 4 4 4 $$ FORECASTER...WILLIAMS REQUESTED BY...BRAD BOLDUAN TYPE OF REQUEST...PRESCRIBED .TAG 20090504.PURRI.01/FSD