FNUS74 KLZK 171654 FWSLZK SPOT FORECAST FOR BARNS BRANCH...USFS NATIONAL WEATHER SERVICE LITTLE ROCK AR 1054 AM CST MON DEC 17 2012 FORECAST IS BASED ON IGNITION TIME OF 1300 CST ON DECEMBER 17. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... AN EXTREMELY SLOW MOVING FRONT IS DRAPED ACROSS CENTRAL ARKANSAS THIS MORNING BUT IS EXPECTED TO PUSH EASTWARD THROUGH THE STATE BY THE AFTERNOON. AS A RESULT OF THE FRONT...40 AND 50 DEGREE DEWPOINTS OBSERVED IN THE SOUTHEAST THIS MORNING...WILL BEGIN TO FALL INTO THE 30S WITH RH VALUES FALLING AS WELL. THE FRONTAL PASSAGE WILL ALSO CAUSE SOUTHERLY WINDS TO BECOME NORTHWEST ACROSS THE ENTIRE STATE BY THIS AFTERNOON. WIND SPEEDS BETWEEN AROUND 10 KNOTS WILL BE COMMON. NO PRECIPITATION IS EXPECTED WITH THE FRONTAL PASSAGE. A WEAK SURFACE HIGH WILL BUILD BACK INTO THE REGION EARLY TUESDAY AND BRING A RETURN OF WARM SOUTHERLY WINDS TO THE STATE. DEWPOINTS WILL GENERALLY REMAIN IN THE 30S THROUGH THE DAY ON TUESDAY...AND NOT BEGIN TO INCREASE UNTIL WEDNESDAY AS A STORM SYSTEM APPROACHES. WINDS WILL ONCE AGAIN BE BETWEEN 10 AND 15 KNOTS ON TUESDAY...THIS COMBINED WITH MIN RH VALUES IN THE MID TO UPPER 30S WILL NEED TO BE MONITORED. PRECIPITATION CHANCES RETURN TO THE NATURAL STATE WEDNESDAY AFTERNOON WITH BEST CHANCES OCCURRING DURING THE OVERNIGHT HOURS WITH CHANCES DIMINISHING BY THURSDAY MORNING. SOME SHOWERS MAY LINGER ACROSS THE NORTH THURSDAY MORNING BEFORE GRADUALLY TAPERING OFF. .TODAY... SKY/WEATHER.........PARTLY SUNNY (45-55 PERCENT). PATCHY FOG EARLY IN THE MORNING. SLIGHT CHANCE OF SPRINKLES EARLY IN THE MORNING. TEMPERATURE.........57 AT IGNITION...MAX 60. RH..................49 PERCENT AT IGNITION...MIN 42 PERCENT. CHANCE OF PCPN......10 PERCENT. EYE LEVEL WINDS.....LIGHT WINDS BECOMING WEST 6 TO 8 MPH IN THE LATE MORNING AND AFTERNOON. TRANSPORT WINDS........WEST 5 TO 12 MPH INCREASING TO 16 TO 22 MPH EARLY IN THE MORNING. MIXING HEIGHT.......BECOMING 4700 FT MSL. STABILITY CLASS.....3. 20-FOOT WINDS.......WINDS NORTHWEST AT 8 MPH AT IGNITION...OTHERWISE WEST WINDS 6 TO 12 MPH. TIME (CST) 1PM 2PM 3PM 4PM 5PM SKY (%).........PC PC PC PC PC WEATHER COV..... WEATHER TYPE.... TEMP............57 58 59 57 53 RH..............49 47 42 46 53 20 FT WIND DIR..NW NW W W W 20 FT WIND SPD..10 10 10 9 7 20 FT WIND GUST.11 11 11 9 7 EYE LVL WND DIR.NW NW W W W EYE LVL WND SPD.6 6 6 5 4 EYE LVL WND GST.6 6 6 5 4 MIX HGT (KFT)...4700 FT MSL TRANSP WIND DIR.NW NW NW NW W TRANSP WIND SPD.18 20 20 18 16 CHC OF PCPN (%).10 10 10 10 0 .TONIGHT... SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT). TEMPERATURE.........MIN 31. RH..................MAX 85 PERCENT. CHANCE OF PCPN......0 PERCENT. EYE LEVEL WINDS.....LIGHT WINDS. TRANSPORT WINDS........WEST 5 TO 14 MPH SHIFTING TO THE SOUTH 3 TO 5 MPH IN THE LATE EVENING AND OVERNIGHT. MIXING HEIGHT.......BECOMING 900 FT MSL. STABILITY CLASS.....6. 20-FOOT WINDS.......WEST WINDS 5 TO 6 MPH EARLY IN THE EVENING BECOMING LIGHT. TIME (CST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM SKY (%).........PC PC MCR MCR MCR MCR MCR MCR MCR MCR MCR MCR WEATHER COV..... WEATHER TYPE.... TEMP............49 48 46 44 42 41 40 39 38 37 37 37 RH..............59 59 64 68 70 73 75 77 78 80 78 80 20 FT WIND DIR..W W W W W SW SW S S S S S 20 FT WIND SPD..6 5 3 3 3 3 3 3 2 2 2 2 20 FT WIND GUST.6 5 4 4 4 4 4 4 4 4 4 4 EYE LVL WND DIR.W W W W W SW SW S S S S S EYE LVL WND SPD.4 3 2 2 2 2 2 2 1 1 1 1 EYE LVL WND GST.4 3 2 2 2 2 2 2 2 2 2 2 MIX HGT (KFT)...900 FT MSL TRANSP WIND DIR.W W W W SW SW S S S S S S TRANSP WIND SPD.14 10 7 5 3 5 5 5 3 3 3 3 CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0 .TUESDAY... SKY/WEATHER.........SUNNY (0-10 PERCENT). TEMPERATURE.........MAX 67. RH..................MIN 34 PERCENT. CHANCE OF PCPN......0 PERCENT. EYE LEVEL WINDS.....LIGHT WINDS BECOMING SOUTH 5 TO 8 MPH LATE IN THE MORNING. TRANSPORT WINDS........SOUTH 3 TO 9 MPH INCREASING TO 13 TO 20 MPH LATE IN THE MORNING. MIXING HEIGHT.......BECOMING 4100 FT MSL. STABILITY CLASS.....2. 20-FOOT WINDS.......LIGHT WINDS BECOMING SOUTH 6 TO 10 MPH IN THE LATE MORNING AND AFTERNOON. TIME (CST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM SKY (%).........MCR MCR MCR CLR CLR MCR MCR CLR CLR CLR CLR CLR WEATHER COV..... WEATHER TYPE.... TEMP............36 36 38 43 49 54 59 62 64 66 64 61 RH..............81 85 85 75 61 50 42 38 35 34 37 42 20 FT WIND DIR..S S S S S S S S S S S S 20 FT WIND SPD..2 2 2 3 6 7 9 10 10 9 7 7 20 FT WIND GUST.4 4 4 4 6 7 9 11 11 9 7 7 EYE LVL WND DIR.S S S S S S S S S S S S EYE LVL WND SPD.1 1 1 2 4 4 5 6 6 5 4 4 EYE LVL WND GST.2 2 2 2 4 4 5 6 6 5 4 4 MIX HGT (KFT)...4100 FT MSL TRANSP WIND DIR.S S S S S S SW S S S S S TRANSP WIND SPD.3 3 3 5 9 15 20 20 18 16 14 13 CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0 $$ FORECASTER...L PYLE REQUESTED BY...RICKEY WILLIAMSON TYPE OF REQUEST...PRESCRIBED .TAG 20121217.BARNS.01/LZK