FNUS73 KARX 241256 FWSARX SPOT FORECAST FOR PR15 16...USFWS NATIONAL WEATHER SERVICE LA CROSSE WI 756 AM CDT TUE APR 24 2012 FORECAST IS BASED ON IGNITION TIME OF 1030 CDT ON APRIL 24. IF CONDITIONS BECOME UNREPRESENTATIVE CONTACT THE NATIONAL WEATHER SERVICE IN LA CROSSE. .DISCUSSION...LOOK FOR CLOUDS TO GRADUALLY DECREASE TODAY WITH A RIDGE OF HIGH PRESSURE JUST TO THE WEST OF THE IGNITION SITE. DRY AIR ASSOCIATED WITH THE RIDGE COMBINED WITH DAYTIME HEATING WILL ALLOW RELATIVE HUMIDITIES TO DROP TO NEAR 30 PERCENT IN THE AFTERNOON. DUE TO THE RIDGE NEARBY...PLAN ON A GENERAL LIGHT NORTHWEST BREEZE. ALTHOUGH THE WINDS ARE LIGHT...THE COMBINATION OF THE DRY AIR AND DEEP MIXING SHOULD PROMOTE GOOD SMOKE DISPERSAL. CLOUDS WILL INCREASE AGAIN TONIGHT AHEAD OF A LOW PRESSURE SYSTEM APPROACHING THE AREA FROM THE DAKOTAS. THERE IS AN OUTSIDE CHANCE SOME SHOWERS AND A FEW THUNDERSTORMS COULD MOVE INTO THE IGNITION SITE AFTER MIDNIGHT...THOUGH THEY ARE MORE LIKELY TO OCCUR WEDNESDAY MORNING. MOST OF THE PRECIPITATION SHOULD EXIT THE AREA IN THE AFTERNOON...THOUGH A FEW MORE SHOWERS AND THUNDERSTORMS CANNOT BE RULED OUT WITH THE LOW PRESSURE SYSTEM STILL NEARBY. .TODAY... SKY/WEATHER.........MOSTLY CLOUDY IN THE MORNING...BECOMING PARTLY SUNNY IN THE AFTERNOON. TEMPERATURE.........54 AT IGNITION...MAX 66. RH..................41 PERCENT AT IGNITION...MIN 31. WIND (20 FT)........WINDS NORTHWEST AT 5 MPH AT IGNITION...OTHERWISE LIGHT WINDS BECOMING NORTHWEST 5 TO 6 MPH. CWR.................NONE. HAINES INDEX........5 OR MODERATE AT IGNITION...MAX 5. SMOKE DISPERSAL.....GOOD /43600 KNOT-FT/ AT IGNITION. MAX...EXCELLENT /86300 KNOT-FT/. TIME (CDT) 7 AM 9 AM 11 AM 1 PM 3 PM 5 PM SKY (% OPAQUE)..90 80 65 50 50 51 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............44 49 58 62 65 65 RH..............77 49 37 35 31 32 20 FT WIND......NW 3 NW 3 NW 5 NW 5 NW 5 NW 5 20 FT WIND GUST.5 5 HAINES INDEX....4 4 5 5 5 5 .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS AND ISOLATED THUNDERSTORMS AFTER MIDNIGHT. CHANCE OF PRECIPITATION 20 PERCENT. TEMPERATURE.........MIN 43. RH..................MAX 76 PERCENT. WIND (20 FT)........LIGHT WINDS. CWR.................NONE. HAINES INDEX........MAX 5. SMOKE DISPERSAL.....MIN...POOR /800 KNOT-FT/. TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (% OPAQUE)..52 52 55 60 60 83 WEATHER COV..... S CHC S CHC S CHC WEATHER TYPE....NONE NONE NONE RNSHWR RNSHWR RNSHWR TEMP............62 55 50 47 44 43 RH..............37 47 57 63 70 76 20 FT WIND......NW 4 NW 4 NE 3 E 2 E 2 SE 3 20 FT WIND GUST.5 5 5 5 HAINES INDEX....5 5 4 4 3 3 .WEDNESDAY... SKY/WEATHER.........MOSTLY CLOUDY. RAIN SHOWERS LIKELY IN THE MORNING...THEN CHANCE OF RAIN SHOWERS IN THE AFTERNOON. CHANCE OF SHOWERS 70 PERCENT. TEMPERATURE.........MAX 63. RH..................MIN 61 PERCENT. WIND (20 FT)........SOUTHEAST WINDS AROUND 5 MPH SHIFTING TO THE SOUTH 5 TO 8 MPH IN THE LATE MORNING AND AFTERNOON. CWR.................70 PERCENT. HAINES INDEX........MAX 3. SMOKE DISPERSAL.....MAX...FAIR /25700 KNOT-FT/. TIME (CDT) 7 AM 9 AM 11 AM 1 PM 3 PM 5 PM SKY (% OPAQUE)..94 94 88 84 84 78 WEATHER COV.....LIKELY LIKELY LIKELY CHANCE CHANCE CHANCE WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR TEMP............45 49 52 55 59 63 RH..............74 71 72 73 67 61 20 FT WIND......SE 5 SE 5 SE 6 S 7 S 7 S 6 20 FT WIND GUST. 10 10 10 10 HAINES INDEX....2 2 3 3 3 3 $$ FORECASTER...AJ REQUESTED BY...MIKE BELSKY TYPE OF REQUEST...PRESCRIBED .TAG 20120424.PR151.01/ARX