FNUS73 KOAX 220945 FWSOAX SPOT FORECAST FOR PP NATURE CENTER PRESCRIBED BURN...LINCOLN PARKS AND REC NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 445 AM CDT WED APR 22 2009 IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... AS AN UPPER LEVEL RIDGE OF HIGH PRESSURE DEVELOPS ACROSS THE REGION TODAY...SKIES WILL BE MOSTLY SUNNY. LIGHT AND VARIABLE WINDS THIS MORNING WILL TURN MORE TO THE SOUTH THIS AFTERNOON AND INCREASE INTO THE 5 TO 10 MPH RANGE BY MID AFTERNOON. DESPITE SOME INCREASE IN SOUTHERLY WINDS TODAY...MOISTURE RETURN WILL STILL BE VERY LIMITED. RELATIVE HUMIDITY VALUES THIS MORNING WILL QUICKLY DROP AS EVEN LIMITED MIXING SHOULD ALLOW FOR SOME VERY DRY AIR JUST OFF THE SURFACE TO MIX DOWN. RELATIVE HUMIDITY VALUES BY LATE MORNING AND INTO THE EARLY AFTERNOON WILL DROP INTO THE MID 20S. THE LOW HUMIDITY WILL CREATE AN INCREASED FIRE DANGER...BUT WITH GENERALLY LIGHT WINDS...THIS WILL TEND TO LIMIT THE GROWTH POTENTIAL. .TODAY... SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT). MAX TEMPERATURE.....AROUND 81. MIN HUMIDITY........24 PERCENT. 20-FOOT WINDS.......LIGHT WINDS BECOMING SOUTH 5 TO 9 MPH IN THE AFTERNOON. HAINES INDEX........5 TO 6 OR OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH TO OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......300-1700 FT AGL INCREASING TO 3200-5000 FT AGL LATE IN THE MORNING...THEN INCREASING TO 3600-5200 FT AGL LATE IN THE AFTERNOON DECREASING TO 1900 FT AGL LATE IN THE AFTERNOON. TRANSPORT WINDS.....SOUTHWEST 2 TO 10 MPH INCREASING TO SOUTH AROUND 16 MPH LATE IN THE AFTERNOON. TIME (CDT) 7 AM 9 AM 11 AM 1 PM 3 PM 5 PM SKY (%).........47 42 35 29 24 18 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............44 53 65 74 79 81 RH..............73 52 35 28 26 24 20 FT WIND......SW 2 S 2 S 3 SE 5 SE 6 S 8 20 FT WIND GUST. 5 10 HAINES INDEX....5 5 5 6 6 6 .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT) THEN BECOMING MOSTLY CLOUDY (45-55 PERCENT). SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS AFTER MIDNIGHT. MIN TEMPERATURE.....AROUND 54. MAX HUMIDITY........80 PERCENT. 20-FOOT WINDS.......SOUTH WINDS 8 TO 12 MPH. HAINES INDEX........4 TO 6 OR OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH TO OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......300 FT AGL. TRANSPORT WINDS.....SOUTH 15 TO 23 MPH. TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........13 22 35 45 48 51 WEATHER COV..... S CHC S CHC S CHC WEATHER TYPE....NONE NONE NONE RNSHWR RNSHWR RNSHWR TEMP............78 70 65 61 58 56 RH..............28 39 47 55 65 73 20 FT WIND......S 10 S 12 S 12 S 12 S 10 S 8 20 FT WIND GUST.15 15 15 15 10 HAINES INDEX....6 5 5 5 4 4 .THURSDAY... SKY/WEATHER.........MOSTLY SUNNY (30-40 PERCENT). MAX TEMPERATURE.....AROUND 84. MIN HUMIDITY........34 PERCENT. 20-FOOT WINDS.......SOUTH WINDS 8 TO 17 MPH. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......300-1900 FT AGL INCREASING TO 1500-3400 FT AGL IN THE AFTERNOON. TRANSPORT WINDS.....SOUTH 16 TO 24 MPH INCREASING TO 22 TO 30 MPH IN THE LATE MORNING AND AFTERNOON. TIME (CDT) 7 AM 9 AM 11 AM 1 PM 3 PM 5 PM SKY (%).........54 43 29 19 18 18 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............54 62 71 78 83 84 RH..............80 66 51 41 36 35 20 FT WIND......S 8 S 10 S 14 S 17 S 17 S 17 20 FT WIND GUST.10 15 20 25 25 25 HAINES INDEX....4 4 4 4 4 4 $$ FORECASTER...NWS OMAHA/VALLEY REQUESTED BY...AARON DRUERY TYPE OF REQUEST...PRESCRIBED .TAG 20090422.PPNAT.01/OAX