FNUS74 KAMA 270338 FWSAMA SPOT FORECAST FOR HALLS CREEK HEAD FIRE...HL RANCH NATIONAL WEATHER SERVICE AMARILLO TX 938 PM CST WED JAN 26 2011 FORECAST IS BASED ON IGNITION TIME OF 0800 CST ON JANUARY 27. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... A DRY NORTHWESTERLY FLOW ALOFT WILL PREVAIL ACROSS THE BURN SITE THROUGH FRIDAY. A SURFACE TROUGH WILL PUSH ACROSS THE BURN SITE THURSDAY ALLOWING FOR NORTHWEST WINDS 5 TO 10 MPH. A SURFACE TROUGH WILL DEVELOP ALONG THE LEE OF THE ROCKIES FRIDAY CAUSING THE WINDS TO BECOME SOUTHWESTERLY AT THE BURN SITE 5 TO 15 MPH. GENERALLY CLEAR SKIES AND NO PRECIPITATION ARE EXPECTED AT THE BURN SITE THROUGH FRIDAY. .THURSDAY... SKY/WEATHER.........SUNNY (0-5 PERCENT). TEMPERATURE.........24 AT IGNITION...MAX 66. RH..................74 PERCENT AT IGNITION...MIN 14 PERCENT. WIND (20 FT)........WINDS NORTHWEST AT 7 MPH AT IGNITION...OTHERWISE WEST WINDS 6 TO 9 MPH. CHANCE OF PCPN......0 PERCENT. LAL.................1. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......0 FT AGL AT IGNITION...OTHERWISE 0 FT AGL INCREASING TO 2000-3500 FT AGL LATE IN THE MORNING...THEN INCREASING TO 5500-7000 FT AGL EARLY IN THE AFTERNOON DECREASING TO 3500-5000 FT AGL LATE IN THE AFTERNOON. MIXING WINDS........NORTHWEST 7 TO 16 MPH. TIME (CST) 8 AM 10 AM NOON 2 PM 4 PM SKY (%).........CLEAR CLEAR CLEAR CLEAR CLEAR WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE TEMP............24 39 55 64 66 RH..............74 42 24 16 14 20 FT WIND......NW 7 W 8 W 9 W 9 W 7 20 FT WIND GUST.10 10 10 10 10 CHC OF PCPN (%).0 0 0 0 0 HAINES INDEX....5 5 4 4 4 .THURSDAY NIGHT... SKY/WEATHER.........CLEAR (0-5 PERCENT). TEMPERATURE.........MIN 28. RH..................MAX 58 PERCENT. WIND (20 FT)........WEST WINDS AROUND 5 MPH EARLY IN THE EVENING BECOMING LIGHT...THEN BECOMING NORTHWEST 5 TO 7 MPH IN THE LATE EVENING AND OVERNIGHT. CHANCE OF PCPN......0 PERCENT. LAL.................1. HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......500-2000 FT AGL DECREASING TO 0 FT AGL IN THE LATE EVENING AND OVERNIGHT. MIXING WINDS........NORTHWEST 6 TO 8 MPH. 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............56 46 41 37 33 31 RH..............19 26 30 34 41 47 20 FT WIND......W 5 NW 3 NW 5 NW 6 NW 6 NW 6 20 FT WIND GUST. 5 10 10 10 CHC OF PCPN (%).0 0 0 0 0 0 HAINES INDEX....3 3 3 2 2 2 .FRIDAY... SKY/WEATHER.........SUNNY (0-5 PERCENT). TEMPERATURE.........MAX 71. RH..................MIN 12 PERCENT. WIND (20 FT)........SOUTHWEST WINDS 6 TO 12 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 2000-3500 FT AGL LATE IN THE MORNING...THEN INCREASING TO 4500-5500 FT AGL EARLY IN THE AFTERNOON INCREASING TO 6500 FT AGL LATE IN THE AFTERNOON DECREASING TO 4500 FT AGL DECREASING TO 2500 FT AGL LATE IN THE AFTERNOON. MIXING WINDS........WEST 7 TO 16 MPH SHIFTING TO THE SOUTHWEST 8 TO 17 MPH IN THE AFTERNOON. TIME (CST) 6 AM 8 AM 10 AM NOON 2 PM 4 PM SKY (%).........CLEAR CLEAR CLEAR CLEAR CLEAR CLEAR WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............29 29 44 60 69 70 RH..............54 55 31 18 13 12 20 FT WIND......NW 7 NW 7 W 7 W 7 SW 10 SW 9 20 FT WIND GUST.10 10 10 10 15 10 CHC OF PCPN (%).0 0 0 0 0 0 HAINES INDEX....4 4 4 4 4 4 $$ FORECASTER...SCHNEIDER REQUESTED BY...ANDREW BIVINS TYPE OF REQUEST...PRESCRIBED .TAG 20110127.HALLS.01/AMA