FNUS74 KAMA 151522 FWSAMA SPOT FORECAST FOR CROSS BAR RX...AMARILLO BLM NATIONAL WEATHER SERVICE AMARILLO TX 922 AM CST FRI JAN 15 2010 FORECAST IS BASED ON IGNITION TIME OF 0930 CST ON JANUARY 15. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... A SURFACE RIDGE OF HIGH PRESSURE WILL MOVE EAST OF THE BURN SITE BY SATURDAY AS A LEE SIDE SURFACE TROUGH DEVELOPS ACROSS EASTERN COLORADO AND EASTERN NEW MEXICO. WINDS WILL SLOWLY VEER AROUND TO THE EAST TODAY AND THEN TO THE SOUTHWEST ON SATURDAY. WIND SPEEDS ARE EXPECTED TO REMAIN LIGHT...GENERALLY LESS THAN 10 MPH AT THE BURN SITE. NO PRECIPITATION IS EXPECTED THROUGH THROUGH AT LEAST SATURDAY. .TODAY... SKY/WEATHER.........PARTLY SUNNY (50-60 PERCENT) THEN BECOMING SUNNY (10-20 PERCENT). TEMPERATURE.........39 AT IGNITION...MAX 51. MIN HUMIDITY........85 PERCENT AT IGNITION...MIN 41 PERCENT. WIND (20 FT)........WINDS SOUTHWEST AT 1 MPH AT IGNITION...OTHERWISE EAST WINDS 6 TO 9 MPH. CHANCE OF PCPN......10 PERCENT. LAL.................1. HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1000 FT AGL AT IGNITION...OTHERWISE 0-1000 FT AGL INCREASING TO 3000-4000 FT AGL. MIXING WINDS........NORTHEAST 2 TO 9 MPH. TIME (CST) 9 AM 11 AM 1 PM 3 PM 5 PM SKY (%).........MCLDY PCLDY PCLDY MCLEAR CLEAR WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE TEMP............27 43 48 51 48 RH..............85 51 46 42 45 20 FT WIND......N 8 N 8 NE 8 E 6 E 6 20 FT WIND GUST. CHC OF PCPN (%).10 10 10 10 10 HAINES INDEX....2 2 3 3 3 .TONIGHT... SKY/WEATHER.........CLEAR (0-5 PERCENT). MIN TEMPERATURE.....26. MAX HUMIDITY........96 PERCENT. WIND (20 FT)........SOUTHWEST WINDS 5 TO 6 MPH. CHANCE OF PCPN......0 PERCENT. LAL.................1. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1000-2500 FT AGL DECREASING TO 0-500 FT AGL IN THE LATE EVENING AND OVERNIGHT. MIXING WINDS........NORTHEAST AROUND 3 MPH SHIFTING TO THE SOUTHWEST 3 TO 6 MPH EARLY IN THE EVENING. TIME (CST) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM SKY (%).........CLEAR CLEAR CLEAR CLEAR CLEAR CLEAR WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............43 37 34 31 29 28 RH..............53 67 75 85 88 92 20 FT WIND......SE 5 SE 5 S 5 S 5 S 5 SW 6 20 FT WIND GUST. CHC OF PCPN (%).0 0 0 0 0 0 HAINES INDEX....5 5 5 2 2 2 .SATURDAY... SKY/WEATHER.........SUNNY (5-15 PERCENT). MAX TEMPERATURE.....60. MIN HUMIDITY........24 PERCENT. WIND (20 FT)........SOUTHWEST WINDS 6 TO 8 MPH. CHANCE OF PCPN......0 PERCENT. LAL.................1. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......0-1000 FT AGL INCREASING TO 2000-3000 FT AGL LATE IN THE MORNING...THEN INCREASING TO 4500-5500 FT AGL EARLY IN THE AFTERNOON INCREASING TO 5500-7000 FT AGL LATE IN THE AFTERNOON DECREASING TO 4500 FT AGL. MIXING WINDS........SOUTH 3 TO 7 MPH. TIME (CST) 6 AM 8 AM 10 AM NOON 2 PM 4 PM SKY (%).........CLEAR CLEAR MCLEAR MCLEAR MCLEAR MCLEAR WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............27 26 38 51 59 59 RH..............92 96 59 36 26 25 20 FT WIND......SW 6 SW 6 SW 7 SW 8 SW 7 SW 6 20 FT WIND GUST. 10 10 10 10 10 CHC OF PCPN (%).0 0 0 0 0 0 HAINES INDEX....4 4 4 4 4 4 $$ FORECASTER...SCHNEIDER REQUESTED BY...FORREST PETERMAN TYPE OF REQUEST...PRESCRIBED .TAG 20100115.CROSS.01/AMA