FNUS73 KOAX 220946 FWSOAX SPOT FORECAST FOR LOESS HILLS WMA...IOWA DNR NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 446 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 13 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 77. MIN HUMIDITY........24 PERCENT. 20-FOOT WINDS.......LIGHT WINDS BECOMING SOUTH 5 TO 13 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 3100-5000 FT AGL LATE IN THE MORNING...THEN DECREASING TO 1800 FT AGL LATE IN THE AFTERNOON. TRANSPORT WINDS.....SOUTHWEST 3 TO 7 MPH SHIFTING TO THE NORTHWEST 1 TO 2 MPH LATE IN THE MORNING...THEN SHIFTING TO THE SOUTH 3 TO 12 MPH EARLY IN THE AFTERNOON. TIME (CDT) 7 AM 9 AM 11 AM 1 PM 3 PM 5 PM SKY (%).........41 38 35 33 27 20 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............37 47 59 69 75 77 RH..............85 58 39 31 26 25 20 FT WIND......NW 3 W 2 S 2 SE 3 SE 7 S 10 20 FT WIND GUST.5 5 15 HAINES INDEX....5 5 5 6 5 5 .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT). MIN TEMPERATURE.....AROUND 52. MAX HUMIDITY........83 PERCENT. 20-FOOT WINDS.......SOUTHEAST WINDS 10 TO 15 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 16 TO 24 MPH SHIFTING TO THE SOUTHEAST AROUND 18 MPH EARLY IN THE MORNING. TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........15 24 35 43 44 44 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............75 67 62 59 56 53 RH..............28 39 48 56 65 76 20 FT WIND......S 14 S 15 S 14 S 13 S 12 SE 10 20 FT WIND GUST.20 20 20 15 15 15 HAINES INDEX....6 5 5 5 4 4 .THURSDAY... SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT). MAX TEMPERATURE.....AROUND 83. MIN HUMIDITY........34 PERCENT. 20-FOOT WINDS.......SOUTH WINDS 10 TO 17 MPH INCREASING TO 20 TO 24 MPH IN THE LATE MORNING AND AFTERNOON. 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.......300-1900 FT AGL INCREASING TO 2400-3400 FT AGL IN THE AFTERNOON...THEN DECREASING TO 1400 FT AGL LATE IN THE AFTERNOON. TRANSPORT WINDS.....SOUTHEAST 20 TO 24 MPH SHIFTING TO THE SOUTH 29 TO 33 MPH EARLY IN THE MORNING. TIME (CDT) 7 AM 9 AM 11 AM 1 PM 3 PM 5 PM SKY (%).........44 36 25 17 18 20 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............52 60 69 77 82 83 RH..............83 67 52 42 36 34 20 FT WIND......SE 10 S 14 S 20 S 23 S 24 S 23 20 FT WIND GUST.15 20 30 30 30 30 HAINES INDEX....4 4 4 5 6 6 $$ FORECASTER...NWS OMAHA/VALLEY REQUESTED BY...BRIAN HICKMAN TYPE OF REQUEST...PRESCRIBED .TAG 20090422.LOESS.01/OAX