FNUS73 KFSD 071312 FWSFSD SPOT FORECAST FOR MASON...USFWS NATIONAL WEATHER SERVICE SIOUX FALLS SD 812 AM CDT THU MAY 7 2009 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... HERES THE UPDATED SPOT WITH A BIT LOWER RH VALUES. THE LOW LEVEL AIRMASS IS FAIRLY DRY IN SOUTHWEST MINNESOTA...SO IT APPEARS THAT MURRAY COUNTY IS TOO FAR NORTH TO RECEIVE MUCH IN THE WAY OF WETTING RAIN. EVEN THE BLOB OF RAIN CURRENTLY IN EAST CENTRAL SD WILL LIKELY DRY UP SOME AS IT MOVES EASTWARD INTO SOUTHWEST MINNESOTA. AT ANY RATE BY AFTERNOON... WE SHOULD BE LOOKING AT ANOTHER WELL MIXED SPRING TIME DAY...WITH RH VALUES FALLING TO AROUND 30 TO 35 PERCENT BY MID AND LATE AFTERNOON. IT APPEARS BY THIS AFTERNOON...THAT SURFACE WINDS WILL SETTLE ON A WEST DIRECTION AT 10 TO 20 MPH...AND THE DIRECTION COULD MEANDER EITHER SIDE OF WEST A BIT PRODUCING A WEST TO SOUTHWEST OR WEST TO NORTHWEST WIND. BUT YOUR SMOKE SHOULD DRIFT TOWARD THE EAST. FRIDAY LOOKS LIKE AN UNSETTLED DAY...JUST NOT VERY PLEASANT WITH DECENT WETTING RAIN CHANCES. .TODAY... MAX TEMPERATURE.....71-76. MIN HUMIDITY........36 PERCENT. TIME (CDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM SKY.............MC MC MC PC PC PC PC PC PC PC WEATHER COV.....SCH SCH ISO ISO WEATHER TYPE....RW RW TSM TSM TEMP (F)........56 58 61 64 67 69 70 71 72 73 RH (%)..........43 45 44 41 37 35 33 32 31 31 DEWPOINT (F)....34 37 39 40 40 40 40 40 40 41 20 FT WIND DIR..WSW W W W W W W W W W 20 FT WIND SPD..12 12 13 14 14 15 15 15 15 15 20 FT WIND GUST.15 15 15 20 20 20 20 20 20 DISPERSAL INDEX.PR PR PR GD GD EX EX EX EX EX CHC OF PCPN (%).20 20 10 10 10 10 10 10 20 20 MIX HGT (KFT)...0.3 0.4 0.5 2.0 3.5 5.0 5.7 6.5 7.2 5.8 TRANSP WIND DIR.WSW W W W W W W W W W TRANSP WIND SPD.14 17 20 20 20 18 20 20 21 21 HAINES INDEX....6 5 5 5 4 4 4 5 5 5 .TONIGHT... MIN TEMPERATURE.....42-47. MAX HUMIDITY........79 PERCENT. TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM SKY.............PCLDY PCLDY PCLDY PCLDY PCLDY PCLDY WEATHER COV.....ISOLTD WEATHER TYPE....TSTORM NONE NONE NONE NONE NONE TEMP (F)........72 65 58 54 50 48 RH (%)..........33 43 55 61 71 74 DEWPOINT (F)....41 42 42 41 41 40 20 FT WIND......W 14 W 13 W 12 W 9 W 7 W 7 20 FT WIND GUST.15 15 15 10 10 10 DISPERSAL INDEX.EXCEL FAIR POOR POOR POOR POOR CHC OF PCPN (%).20 0 0 0 10 10 .FRIDAY... MAX TEMPERATURE.....58-63. MIN HUMIDITY........49 PERCENT. TIME (CDT) 6 AM 9 AM NOON 3 PM SKY.............PCLDY MCLDY MCLDY MCLDY WEATHER COV..... SCTTRD SCTTRD LIKELY WEATHER TYPE....NONE RNSHWR RNSHWR RNSHWR TEMP (F)........46 50 56 59 RH (%)..........79 71 59 53 DEWPOINT (F)....40 41 42 42 20 FT WIND......WSW 7G10 W 8G10 WNW 12G15 NW 14G15 DISPERSAL INDEX.POOR POOR FAIR GOOD CHC OF PCPN (%).10 40 40 60 MIX HGT (FT)....300 600 2400 4300 TRANSPORT WIND..W 7 W 12 NW 15 WNW 15 HAINES INDEX....4 5 5 5 $$ FORECASTER...MJF REQUESTED BY...ERIC EARHART TYPE OF REQUEST...PRESCRIBED .TAG 20090507.MASON.01/FSD