FNUS74 KAMA 131355 FWSAMA SPOT FORECAST FOR CROSS BAR RX...NM ABD NATIONAL WEATHER SERVICE AMARILLO TX 755 AM CST WED JAN 13 2010 FORECAST IS BASED ON IGNITION TIME OF 0815 CST ON JANUARY 13. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... A SURFACE LOW PRESSURE TROUGH WILL CAUSE WIND SPEEDS TO INCREASE THIS MORNING THROUGH THE AFTERNOON HOURS OVER THE BURN SITE. WE ANTICIPATE WIND SPEEDS AROUND 15 TO 20 MPH WITH GUSTS NEAR 25 MPH FROM 8 AM CST THROUGH AROUND 6 PM CST. WIND SPEEDS SHOULD THEN DECREASE AFTER 6 PM CST. THESE SOUTHWEST WINDS WILL ALSO BRING DRY AIR AS RELATIVE HUMIDITY VALUES ARE EXPECTED TO FALL TO AROUND 15 PERCENT. THUS THE FIRE WEATHER CONDITIONS ARE ELEVATED TODAY AND A FIRE DANGER STATEMENT HAS BEEN ISSUED FOR THE TEXAS AND OKLAHOMA PANHANDLES. .TODAY... SKY/WEATHER.........SUNNY (5-15 PERCENT). MAX TEMPERATURE.....AROUND 65. MIN HUMIDITY........14 PERCENT. WIND (20 FT)........SOUTHWEST WINDS 13 TO 21 MPH. CHANCE OF PCPN......0 PERCENT. LAL.................1. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......0-1500 FT AGL INCREASING TO 2000-3500 FT AGL IN THE AFTERNOON...THEN DECREASING TO 1500 FT AGL LATE IN THE AFTERNOON. MIXING WINDS........SOUTHWEST 8 TO 16 MPH SHIFTING TO THE SOUTH AROUND 12 MPH LATE IN THE AFTERNOON. TIME (CST) 8 AM 10 AM NOON 2 PM 4 PM SKY (%).........CLEAR CLEAR CLEAR MCLEAR MCLEAR WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE TEMP............25 40 54 63 64 RH..............65 37 21 15 15 20 FT WIND......SW 16 SW 16 SW 20 SW 21 SW 16 20 FT WIND GUST.25 25 30 30 25 CHC OF PCPN (%).0 0 0 0 0 HAINES INDEX....5 5 5 5 5 .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT) THEN BECOMING MOSTLY CLOUDY (55-65 PERCENT). MIN TEMPERATURE.....AROUND 28. MAX HUMIDITY........82 PERCENT. WIND (20 FT)........WEST WINDS 6 TO 7 MPH SHIFTING TO THE NORTHWEST AROUND 7 MPH EARLY IN THE MORNING. CHANCE OF PCPN......0 PERCENT. LAL.................1. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......0 FT AGL. MIXING WINDS........NORTHWEST 3 TO 10 MPH. TIME (CST) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM SKY (%).........MCLEAR PCLDY PCLDY MCLDY MCLDY MCLDY WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............53 44 39 36 33 31 RH..............22 32 42 53 60 66 20 FT WIND......S 7 S 6 S 6 S 6 SW 6 W 6 20 FT WIND GUST.10 10 10 10 10 10 CHC OF PCPN (%).0 0 0 0 0 0 HAINES INDEX....5 5 5 5 5 5 .THURSDAY... SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT). MAX TEMPERATURE.....AROUND 47. MIN HUMIDITY........44 PERCENT. WIND (20 FT)........NORTHEAST WINDS 7 TO 16 MPH. CHANCE OF PCPN......10 PERCENT. LAL.................1. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......0-1500 FT AGL INCREASING TO 2500-3000 FT AGL IN THE AFTERNOON. MIXING WINDS........NORTHEAST 7 TO 16 MPH. TIME (CST) 6 AM 8 AM 10 AM NOON 2 PM 4 PM SKY (%).........MCLDY MCLDY MCLDY MCLDY MCLDY CLOUDY WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............29 28 35 42 46 47 RH..............75 82 64 50 45 44 20 FT WIND......N 7 N 9 N 12 N 14 NE 15 NE 14 20 FT WIND GUST.10 10 15 20 20 20 CHC OF PCPN (%).10 10 10 10 10 10 HAINES INDEX....5 5 5 4 4 4 $$ FORECASTER...BROST REQUESTED BY...JACKIE LEYBA TYPE OF REQUEST...PRESCRIBED .TAG 20100113.CROSS.02/AMA