FNUS74 KAMA 211424 FWSAMA SPOT FORECAST FOR ROSITA...NATIONAL PARK SERVICE NATIONAL WEATHER SERVICE AMARILLO TX 824 AM CST SAT FEB 21 2009 FORECAST IS BASED ON REQUEST TIME OF 0811 CST ON FEBRUARY 21. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... SURFACE HIGH PRESSURE WILL BUILD IN OVER THE BURN SITE BY MIDDAY TODAY...AND WILL THEN MOVE OFF TO THE EAST BY LATE TODAY. NORTHERLY TO NORTHEASTERLY WINDS OF 5 TO 15 MPH WILL VEER AROUND TO THE SOUTHEAST AND SOUTH BY LATE TODAY. LIGHT SOUTHERLY WINDS TONIGHT WILL BECOME SOUTHWESTERLY SUNDAY AS A SURFACE TROUGH DEVELOPS ALONG THE LEE OF THE ROCKIES. THE PRESSURE GRADIENT IS EXPECTED TO TIGHTEN UP OVER THE BURN SITE AS THE SURFACE TROUGH STRENGTHENS SUNDAY. THIS WILL ALLOW THE SOUTHWESTERLY DOWNSLOPING WINDS TO INCREASE INTO THE 15 TO 25 MPH RANGE AND GUSTY BY SUNDAY AFTERNOON. GENERALLY CLEAR SKIES TODAY AND SUNDAY WILL BECOME PARTLY CLOUDY SUNDAY AS SOME SCATTERED HIGH LEVEL CLOUDS MOVE ACROSS THE BURN SITE. NO PRECIPITATION IS EXPECTED THROUGH SUNDAY. .TODAY... SKY/WEATHER.........SUNNY (0-5 PERCENT). TEMPERATURE.........33 AT REQUEST...MAX 54. RH..................37 PERCENT AT REQUEST...MIN 13 PERCENT. WIND (20 FT)........WINDS NORTHEAST AT 12 MPH AT REQUEST...OTHERWISE NORTHEAST WINDS 9 TO 17 MPH SHIFTING TO THE SOUTHEAST 6 TO 7 MPH LATE IN THE MORNING...THEN SHIFTING TO THE SOUTH AROUND 6 MPH LATE IN THE AFTERNOON. CHANCE OF PCPN......0 PERCENT. LAL.................1. HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2500 FT AGL AT REQUEST...OTHERWISE 2000-3500 FT AGL INCREASING TO 4000-4500 FT AGL IN THE AFTERNOON. MIXING WINDS........NORTH 14 TO 23 MPH SHIFTING TO THE WEST 7 TO 12 MPH IN THE AFTERNOON. 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............28 38 47 53 54 RH..............37 26 18 14 13 20 FT WIND......N 13 NE 9 NE 6 E 6 SE 6 20 FT WIND GUST.20 10 10 10 CHC OF PCPN (%).0 0 0 0 0 HAINES INDEX....2 2 3 3 3 .TONIGHT... SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT). TEMPERATURE.........MIN 28. RH..................MAX 46 PERCENT. WIND (20 FT)........SOUTH WINDS 6 TO 10 MPH. CHANCE OF PCPN......0 PERCENT. LAL.................1. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2500-3500 FT AGL DECREASING TO 0-1000 FT AGL EARLY IN THE EVENING. MIXING WINDS........SOUTHWEST 5 TO 9 MPH. TIME (CST) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM SKY (%).........CLEAR CLEAR CLEAR CLEAR MCLEAR MCLEAR WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............49 41 37 34 32 30 RH..............15 22 27 33 37 41 20 FT WIND......S 6 S 7 S 8 S 9 S 9 S 9 20 FT WIND GUST.10 10 10 10 10 10 CHC OF PCPN (%).0 0 0 0 0 0 HAINES INDEX....4 4 4 5 5 5 .SUNDAY... SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT). TEMPERATURE.........MAX 67. RH..................MIN 12 PERCENT. WIND (20 FT)........BREEZY. SOUTHWEST WINDS 12 TO 18 MPH SHIFTING TO THE SOUTH 16 TO 25 MPH WITH GUSTS TO AROUND 40 MPH IN THE LATE MORNING AND AFTERNOON. CHANCE OF PCPN......0 PERCENT. LAL.................1. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......0-1000 FT AGL INCREASING TO 4500-5000 FT AGL. MIXING WINDS........SOUTHWEST 9 TO 16 MPH INCREASING TO 26 TO 31 MPH. TIME (CST) 6 AM 8 AM 10 AM NOON 2 PM 4 PM SKY (%).........MCLEAR PCLDY PCLDY PCLDY PCLDY PCLDY WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............28 30 45 57 65 67 RH..............44 44 26 17 13 12 20 FT WIND......SW 12 SW 16 SW 22 SW 25 S 23 S 18 20 FT WIND GUST.15 25 35 40 35 25 CHC OF PCPN (%).0 0 0 0 0 0 HAINES INDEX....5 5 5 5 5 5 $$ FORECASTER...SCHNEIDER REQUESTED BY...STEPHEN FISHER TYPE OF REQUEST...WILDFIRE .TAG 20090221.ROSIT.01/AMA