FNUS73 KOAX 281015 FWSOAX SPOT FORECAST FOR RUBACK...POTTAWATTAMIE COUNTY CONSERVATION NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 515 AM CDT SUN APR 28 2013 FORECAST IS BASED ON IGNITION TIME OF 1430 CDT ON APRIL 28. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... SUNNY SKIES AND MUCH WARMER TEMPERATURES ARE EXPECTED TODAY WITH HIGHS EXPECTED TO TOP OUT IN THE LOW 80S. A FRONTAL BOUNDARY MOVING IN FROM THE DAKOTAS WILL RESULT IN A GRADUAL WIND SHIFT FROM THE SOUTHWEST TO NORTHWEST THIS AFTERNOON WITH GUSTS AROUND 15 MPH. WITH A DRIER AIR MASS ACCOMPANYING THIS BOUNDARY...LOWEST RELATIVE HUMIDITIES OVER NORTHEAST NEBRASKA ARE EXPECTED TO DROP TO 20% OR SLIGHTLY LESS. .TODAY... SKY/WEATHER.........SUNNY (20-30 PERCENT). MAX TEMPERATURE.....AROUND 79. MIN HUMIDITY........22 PERCENT. WIND (20 FT)........SOUTH WINDS 7 TO 14 MPH. HAINES INDEX........3 TO 5 OR OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH TO OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......100-1200 FT AGL INCREASING TO 2200-3800 FT AGL LATE IN THE MORNING...THEN DECREASING TO 1400 FT AGL LATE IN THE AFTERNOON. TRANSPORT WINDS.....SOUTH 14 TO 22 MPH. TIME (CDT) 3 PM 5 PM 7 PM 9 PM 11 PM 1 AM SKY (%).........33 34 35 43 53 60 WEATHER COV..... CHANCE WEATHER TYPE....NONE NONE NONE NONE NONE RNSHWR TSTM COV........ CHANCE TEMP............78 79 77 69 62 59 RH..............26 22 43 57 70 75 20 FT WIND......S 14 S 12 S 8 S 9 S 7 S 3 20 FT WIND GUST.20 15 10 10 5 HAINES INDEX....5 5 5 5 4 3 .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT) THEN BECOMING MOSTLY CLOUDY (60-70 PERCENT). CHANCE OF SHOWERS AND THUNDERSTORMS AFTER MIDNIGHT. MIN TEMPERATURE.....AROUND 54. MAX HUMIDITY........86 PERCENT. WIND (20 FT)........SOUTH WINDS 6 TO 9 MPH IN THE EVENING BECOMING LIGHT...THEN BECOMING NORTH 5 TO 6 MPH EARLY IN THE MORNING. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS AFTER MIDNIGHT. HAINES INDEX........3 TO 5 OR OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH TO OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......100-400 FT AGL. TRANSPORT WINDS.....SOUTH 10 TO 18 MPH SHIFTING TO THE SOUTHEAST 6 TO 7 MPH AFTER MIDNIGHT...THEN SHIFTING TO THE NORTH 6 TO 12 MPH AFTER MIDNIGHT. .MONDAY... SKY/WEATHER.........PARTLY SUNNY (50-60 PERCENT). MAX TEMPERATURE.....AROUND 77. MIN HUMIDITY........47 PERCENT. WIND (20 FT)........EAST WINDS 6 TO 9 MPH SHIFTING TO THE SOUTH 6 TO 8 MPH EARLY IN THE AFTERNOON. HAINES INDEX........2 TO 5 OR OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH TO OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......300-1900 FT AGL INCREASING TO 3700-5100 FT AGL. TRANSPORT WINDS.....EAST 9 TO 14 MPH SHIFTING TO THE SOUTHEAST 5 TO 7 MPH EARLY IN THE AFTERNOON. .FORECAST DAYS 3 THROUGH 5... .TUESDAY... PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS IN THE UPPER 50S. HIGHS IN THE MID 70S. SOUTHWEST WINDS AROUND 8 MPH. .WEDNESDAY... MUCH COOLER. SHOWERS AND ISOLATED THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE LOWER 50S. NORTH WINDS AROUND 16 MPH. .THURSDAY... CLOUDY WITH RAIN LIKELY. LOWS IN THE MID 30S. HIGHS IN THE MID 40S. NORTH WINDS AROUND 16 MPH. $$ FORECASTER...DEE REQUESTED BY...CHAD GRAEVE TYPE OF REQUEST...PRESCRIBED .TAG 20130428.RUBAC.01/OAX