FNUS73 KOAX 231014 FWSOAX SPOT FORECAST FOR FARM CREEK PWA...POTTAWATTAMIE COUNTY CONSERVATION NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 514 AM CDT THU APR 23 2009 IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... MOSTLY SUNNY AND WARM WEATHER WILL CONTINUE ACROSS THE REGION TODAY. THE WARM WEATHER IS IN RESPONSE TO A STRONG UPPER LEVEL RIDGE OF HIGH PRESSURE OVER THE REGION. SOUTHERLY FLOW WILL INCREASE TODAY AND THIS WILL LEAD TO INCREASING LOW LEVEL MOISTURE AND HIGHER RELATIVE HUMIDITY VALUES. THIS WILL BE ESPECIALLY TRUE OVER SOUTHEAST NEBRASKA AND SOUTHWEST IOWA. THE STRONG RIDGE OF HIGH PRESSURE WILL START TO BREAK DOWN TONIGHT AND ALLOW FOR A COLD FRONT TO MOVE TOWARD THE AREA. THIS FRONT WILL EXTEND ACROSS NORTHEAST NEBRASKA AND WEST CENTRAL IOWA ON FRIDAY WITH COOLER AIR AND NORTH WINDS BEHIND IT. AHEAD OF THE FRONT...VERY WARM AND DRY CONDITIONS OVER SOUTHEAST NEBRASKA AND SOUTHWEST IOWA ARE EXPECTED AGAIN. THIS FRONT WILL BRING COOLER AIR AND A CHANCE OF RAIN FOR THE WEEKEND. .TODAY... SKY/WEATHER.........SUNNY (15-25 PERCENT). MAX TEMPERATURE.....AROUND 84. MIN HUMIDITY........33 PERCENT. 20-FOOT WINDS.......SOUTH WINDS 8 TO 16 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.......300-2200 FT AGL INCREASING TO 3000-4900 FT AGL IN THE AFTERNOON. TRANSPORT WINDS.....SOUTH 16 TO 25 MPH INCREASING TO 17 TO 26 MPH EARLY IN THE AFTERNOON...THEN DECREASING TO AROUND 15 MPH LATE IN THE AFTERNOON. TIME (CDT) 7 AM 9 AM 11 AM 1 PM 3 PM 5 PM SKY (%).........22 21 20 19 18 17 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............53 61 70 78 83 84 RH..............77 62 49 39 34 33 20 FT WIND......SE 8 SE 12 S 14 S 16 S 16 S 16 20 FT WIND GUST.10 15 20 25 25 25 HAINES INDEX....4 4 4 5 6 5 .TONIGHT... SKY/WEATHER.........MOSTLY CLEAR (10-20 PERCENT). MIN TEMPERATURE.....AROUND 59. MAX HUMIDITY........80 PERCENT. 20-FOOT WINDS.......SOUTH WINDS 12 TO 15 MPH. HAINES INDEX........4 TO 5 OR OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH TO OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......300-2200 FT AGL. TRANSPORT WINDS.....SOUTH 15 TO 24 MPH. TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........16 15 13 12 12 12 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............82 74 69 66 63 60 RH..............37 48 57 64 71 76 20 FT WIND......S 15 S 14 S 13 S 12 S 12 S 12 20 FT WIND GUST.20 20 15 15 15 15 HAINES INDEX....4 5 5 5 4 4 .FRIDAY... SKY/WEATHER.........SUNNY (20-30 PERCENT). MAX TEMPERATURE.....AROUND 85. MIN HUMIDITY........41 PERCENT. 20-FOOT WINDS.......SOUTH WINDS 13 TO 22 MPH. HAINES INDEX........4 TO 5 OR OR 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 2500-3600 FT AGL IN THE AFTERNOON. TRANSPORT WINDS.....SOUTH 24 TO 33 MPH INCREASING TO 35 TO 39 MPH LATE IN THE AFTERNOON. TIME (CDT) 7 AM 9 AM 11 AM 1 PM 3 PM 5 PM SKY (%).........12 20 30 38 37 37 WEATHER COV..... S CHC WEATHER TYPE....NONE NONE NONE NONE NONE RNSHWR TEMP............59 66 74 80 84 85 RH..............80 69 54 47 43 42 20 FT WIND......S 13 S 16 S 20 S 22 S 22 S 21 20 FT WIND GUST.15 25 30 30 30 30 HAINES INDEX....4 4 4 5 5 5 $$ FORECASTER...NWS OMAHA/VALLEY REQUESTED BY...CHAD GRAEVE TYPE OF REQUEST...PRESCRIBED .TAG 20090423.FARMC.01/OAX