FNUS73 KFSD 211221 FWSFSD SPOT FORECAST FOR KETTLESON WMA...IOWA DNR NATIONAL WEATHER SERVICE SIOUX FALLS SD 721 AM CDT TUE APR 21 2009 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. ...HIGH TO VERY HIGH GRASSLAND FIRE DANGER CONDITIONS THIS AFTERNOON... BUT RED FLAG CONDITIONS SHOULD NOT OCCUR... .DISCUSSION...A WEAK UPPER AIR DISTURBANCE IS MOVING THROUGH THIS AREA THIS MORNING...WHICH WILL PROVIDE YOUR AREA WITH A PARTLY TO MOSTLY CLOUDY SKY...THEN PARTLY CLOUDY THIS AFTERNOON. THE LIGHT SHOWERS OR SPRINKLES CURRENTLY ON THE RADAR SHOULD POSE NO THREAT TO A BURN AS NEARLY ALL OF THAT ACTIVITY IS NOT REACHING THE GROUND. THE GREATEST THING TO WATCH FOR TODAY IS ONCE AGAIN THE WIND. THE WINDS WILL BE PRETTY STEADY STATE...WITHOUT CHANGING DIRECTIONS AND WILL MAINTAIN NORTHWEST TO NORTH NORTHWEST. BUT SPEEDS WILL BE RATHER BRISK...BUT NOT AS WINDY AS YESTERDAY. WINDS OFF THE SURFACE THIS MORNING ARE A STOUT 30 TO 35 MPH...PROVIDING 15 TO 25 MPH WINDS AT THE SURFACE. NOW THIS AFTERNOON...THE HIGH PRESSURE RIDGE WILL ACTUALLY BE CLOSER TO THIS AREA WHICH WILL DECREASE THE WINDS ALOFT. HOWEVER...WE ARE LOOKING AT AN EXTREMELY WELL MIXED DAY...WITH VERY HIGH MIXING HEIGHTS. SO ALTHOUGH THE WINDS DECREASE OFF THE SURFACE THIS AFTERNOON TO 20 TO 25 MPH...THE GUSTINESS OF 25 TO 30 MPH EARLY IN THE AFTERNOON WILL CONTINUE. BUT AGAIN...YOU SHOULD HAVE NO WIND SHIFTS TO WORRY ABOUT. .TODAY... MAX TEMPERATURE.....58-63. MIN HUMIDITY........26 PERCENT. TIME (CDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM SKY.............PC PC PC MCD MCD PC PC PC PC PC PC WEATHER TYPE.... TEMP (F)........32 33 38 42 46 51 54 56 58 60 59 RH (%)..........98 95 80 68 57 48 41 36 32 29 30 DEWPOINT (F)....32 32 32 32 32 32 31 30 28 28 28 20 FT WIND DIR..NW NNW NNW NNW NNW NNW NNW NNW NNW NNW NNW 20 FT WIND SPD..15 16 17 18 20 20 20 20 18 17 16 20 FT WIND GUST.20 25 25 30 30 30 30 30 30 25 25 DISPERSAL INDEX.PR PR FR GD EX EX EX EX EX EX EX CHC OF PCPN (%).10 10 10 10 10 10 10 10 10 10 10 MIX HGT (KFT)...0.3 0.7 1.1 1.6 3.1 4.7 6.2 6.9 7.6 8.4 7.9 TRANSP WIND DIR.NW NNW NNW NNW NNW NNW NNW NNW NNW NNW NNW TRANSP WIND SPD.17 20 23 26 29 30 30 29 28 25 23 HAINES INDEX....5 5 5 5 5 4 4 4 5 5 5 .TONIGHT... MIN TEMPERATURE.....33-38. MAX HUMIDITY........82 PERCENT. TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM SKY.............PCLDY PCLDY PCLDY PCLDY PCLDY PCLDY WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP (F)........58 54 48 44 41 39 RH (%)..........31 38 49 60 70 76 DEWPOINT (F)....28 29 30 31 32 32 20 FT WIND......NNW 14 NW 10 W 6 WNW 7 NW 7 NW 6 20 FT WIND GUST.20 CHC OF PCPN (%).10 10 10 10 10 10 .WEDNESDAY... MAX TEMPERATURE.....67-72. MIN HUMIDITY........28 PERCENT. TIME (CDT) 6 AM 9 AM NOON 3 PM SKY.............PCLDY MCLEAR MCLEAR MCLEAR WEATHER TYPE....NONE NONE NONE NONE TEMP (F)........37 46 59 67 RH (%)..........82 60 37 30 DEWPOINT (F)....32 33 33 35 20 FT WIND......NW 6 N 5 NNW 3G5 W 3G5 DISPERSAL INDEX.POOR POOR FAIR GOOD CHC OF PCPN (%).10 10 10 10 MIX HGT (FT)....300 1100 4300 6300 TRANSPORT WIND..NW 7 NNW 7 NW 8 W 8 HAINES INDEX....4 4 4 4 $$ FORECASTER...MJF REQUESTED BY...RORY MATINSON TYPE OF REQUEST...PRESCRIBED .TAG 20090421.KETTL.01/FSD