FNUS73 KFSD 131615 FWSFSD SPOT FORECAST FOR NORTH LAIR WPA...USFWS NATIONAL WEATHER SERVICE SIOUX FALLS SD 1115 AM CDT MON APR 13 2009 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... WINDS MAINLY NORTHEAST NEAR 10 MPH THIS MORNING INCREASING IN THE AFTERNOON WITH GUSTS TO 20 MPH. DRY AIRMASS IN PLACE JUST TO OUR NORTHEAST TODAY...ADVECTING INTO THE BURN AREA ON THE NORTHEAST LOW LEVEL FLOW. VERY DRY AIR MAY MIX TO THE SURFACE THIS AFTERNOON... POSSIBLY PUSHING DEW POINT TEMPERATURES TO AROUND 20 DEGREES...WITH RELATIVE HUMIDITY VALUES NEARING 25 PERCENT FOR A TIME. .TODAY... MAX TEMPERATURE.....52-57. MIN HUMIDITY........27 PERCENT. TIME (CDT) 11A 12P 1PM 2PM 3PM 4PM 5PM SKY.............CDY CDY CDY MC MC MC MC WEATHER TYPE.... TEMP (F)........47 49 51 52 53 54 54 RH (%)..........40 39 36 33 29 26 26 DEWPOINT (F)....24 25 25 24 22 20 20 20 FT WIND DIR..NNE NE NE NE NE NE NE 20 FT WIND SPD..9 12 14 15 15 14 14 20 FT WIND GUST.10 15 20 20 20 20 20 DISPERSAL INDEX.GD GD EX EX EX GD GD CHC OF PCPN (%).10 10 10 10 10 10 10 MIX HGT (KFT)...3.5 4.4 5.2 5.1 4.9 4.8 4.0 TRANSP WIND DIR.NNE NE NE NE NE NE NE TRANSP WIND SPD.15 17 18 18 17 16 16 HAINES INDEX....3 3 3 3 4 4 4 .TONIGHT... MIN TEMPERATURE.....23-28. MAX HUMIDITY........85 PERCENT. TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM SKY.............PCLDY PCLDY PCLDY MCLEAR MCLEAR MCLEAR WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP (F)........53 48 39 35 32 30 RH (%)..........27 37 57 66 75 81 DEWPOINT (F)....20 23 25 25 25 25 20 FT WIND......NE 13 NE 9 NE 8 ENE 6 ENE 5 NE 5 20 FT WIND GUST.15 10 10 DISPERSAL INDEX.GOOD FAIR POOR POOR POOR POOR .TUESDAY... MAX TEMPERATURE.....57-62. MIN HUMIDITY........24 PERCENT. TIME (CDT) 6 AM 9 AM NOON 3 PM SKY.............MCLEAR MCLEAR MCLEAR CLEAR WEATHER TYPE....NONE NONE NONE NONE TEMP (F)........29 39 54 59 RH (%)..........78 52 31 25 DEWPOINT (F)....23 23 24 23 20 FT WIND......N 3G5 NNE 2 NE 6 NE 10G15 DISPERSAL INDEX.POOR POOR GOOD EXCEL CHC OF PCPN (%).0 0 0 0 MIX HGT (FT)....300 1300 3900 5100 TRANSPORT WIND..N 1 N 7 NE 14 NE 16 HAINES INDEX....3 3 3 3 $$ FORECASTER...JH REQUESTED BY...CHAD LORETH TYPE OF REQUEST...PRESCRIBED .TAG 20090413.NORTH.01/FSD