FNUS73 KFSD 301352 FWSFSD SPOT FORECAST FOR PIPESTONE...NATIONAL PARK SERVICE NATIONAL WEATHER SERVICE SIOUX FALLS SD 852 AM CDT MON APR 30 2012 IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... SKIES WILL GRADUALLY CLEAR THROUGH THE LATE MORNING HOURS..BUT WEAK WINDS ACROSS THE REGION WILL RESULT IN POOR MIXING CONDITIONS. A STRENGTHENING SOUTH TO SOUTHWEST PRESSURE GRADIENT WILL ALLOW FOR DECENT MIXING AND WARMER CONDITIONS THIS AFTERNOON. AS A RESULT... POOR SMOKE DISPERSION WILL BECOME GOOD AROUND NOON...AND EXCELLENT THIS AFTERNOON. .TODAY... MAX TEMPERATURE.....67-72. MIN HUMIDITY........39 PERCENT. TIME (CDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY COVER.......CDY CDY CDY MC MC MC PC PC PC PC PC PC % SKY COVER.....100 100 91 81 70 59 39 39 39 38 40 41 WEATHER COV.....PTY PTY WEATHER TYPE....FOG FOG TEMP............45 45 48 53 58 62 65 67 69 70 70 70 RH..............93 93 93 78 65 56 49 45 41 39 40 42 DEWPOINT........43 43 46 46 46 46 46 45 44 44 45 46 20 FT WIND DIR..SSW SW WSW WSW WSW W W W WSW SW SW SW 20 FT WIND SPD..7 8 8 9 10 10 12 13 13 13 13 12 20 FT WIND GUST. 10 10 10 15 15 15 15 15 15 15 15 SMOKE DISPERSAL.PR PR PR PR FR GD EX EX EX EX EX EX CHC OF PCPN (%).10 10 0 0 0 0 10 10 10 10 10 10 MIX HGT (KFT)...0.3 0.3 0.4 0.5 1.5 3.0 4.4 5.1 5.3 5.4 5.4 5.4 TRANSP WIND DIR.SSW SW SW WSW WSW WSW W WSW WSW WSW SW SW TRANSP WIND SPD.8 9 10 13 16 18 21 21 18 17 16 16 HAINES INDEX....4 4 4 4 4 4 4 4 5 5 5 5 .TONIGHT... MIN TEMPERATURE.....52-57. MAX HUMIDITY........93 PERCENT. TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY COVER.......PCLDY PCLDY PCLDY PCLDY MCLDY MCLDY % SKY COVER.....43 40 37 35 65 85 WEATHER COV.....S CHC S CHC S CHC S CHC WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR NONE NONE TEMP............69 64 60 58 57 55 RH..............45 55 64 71 76 87 DEWPOINT........47 48 48 49 50 51 20 FT WIND......SSW 10 S 10 S 12 S 13 S 15 S 16 20 FT WIND GUST.15 15 15 15 20 25 SMOKE DISPERSAL.EXCEL POOR POOR POOR POOR POOR CHC OF PCPN (%).20 20 20 20 10 10 MIX HGT (FT)....5400 300 300 300 300 300 TRANSPORT WIND..SSW 15 S 13 S 13 S 15 S 17 S 18 HAINES INDEX....5 5 5 4 4 4 .TUESDAY... MAX TEMPERATURE.....78-83. MIN HUMIDITY........49 PERCENT. TIME (CDT) 7 AM 10 AM 1 PM 4 PM SKY COVER.......CLOUDY MCLDY MCLDY MCLDY % SKY COVER.....94 71 61 69 WEATHER COV..... CHANCE WEATHER TYPE....NONE NONE NONE RNSHWR TEMP............55 62 74 79 RH..............93 83 61 51 DEWPOINT........53 57 60 59 20 FT WIND......S 16G25 S 22G30 S 24G30 SSW 21G30 SMOKE DISPERSAL.POOR FAIR GOOD EXCEL CHC OF PCPN (%).10 10 10 30 MIX HGT (FT)....300 800 2300 3800 TRANSPORT WIND..S 18 S 26 S 35 SSW 32 HAINES INDEX....4 5 5 5 WEATHER TYPE ABBREVIATIONS 1) T = THUNDERSTORMS 2) R = RAIN 3) RW = RAIN SHOWERS 4) L = DRIZZLE 5) ZR = FREEZING RAIN 6) ZL = FREEZING DRIZZLE 7) S = SNOW 8) SW = SNOW SHOWERS 9) IP = ICE PELLETS 10) F = FOG 11) ZF = FREEZING FOG 12) IC = ICE CRYSTALS 13) H = HAZE 14) BS = BLOWING SNOW 15) K = SMOKE 16) BD = BLOWING DUST 17) FR = FROST $$ FORECASTER...BT REQUESTED BY...SCOTT BRESSLER TYPE OF REQUEST...PRESCRIBED .TAG 20120430.PIPES.01/FSD