388  
FNUS74 KAMA 131813  
FWSAMA  
 
SPOT FORECAST FOR PROGRESSIVE RAIL FIRE...AMARILLO OEM  
NATIONAL WEATHER SERVICE AMARILLO TX  
113 PM CDT THU JUL 13 2017  
 
FORECAST IS BASED ON REQUEST TIME OF 1400 CDT ON JULY 13.  
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
 
UPPER LEVEL HIGH PRESSURE WILL DOMINATE WEATHER TODAY WITH RELATIVELY  
LIGHT WINDS THROUGHOUT THE VERTICAL COLUMN RESULTING IN POOR SMOKE  
DISPERSAL. SMOKE DISPERSAL MAY DECREASE OVERNIGHT AS A SURFACE  
INVERSION SETS UP. SURFACE WINDS THIS AFTERNOON WILL BE SOUTHERLY  
AT 10 TO 15 KNOTS WITH OCCASIONAL GUSTS UP TO 20 KNOTS. WINDS WILL  
DECREASE OVERNIGHT TO LIGHT AND VARIABLE AT AROUND 5-10 KNOTS  
AROUND SUNSET. A SUBTLE WIND SHIFT TO THE NORTH IS POSSIBLE AS A  
WEAK FRONT PASSES AFTER MIDNIGHT, BUT WINDS ARE EXPECTED TO REMAIN  
LIGHT. SURFACE RH VALUES MAY DIP AS LOW AS 25 PERCENT AT PEAK  
HEATING THIS AFTERNOON, BUT SHOULD RECOVER OVERNIGHT AS THEY COME  
UP AROUND 70-80 PERCENT BY EARLY FRIDAY MORNING.  
   
TONIGHT
 
 
SMOKE DISPERSAL.....POOR (0 KNOT-FT).  
MIN TEMPERATURE.....AROUND 65.  
LAL.................1.  
MAX HUMIDITY........75 PERCENT.  
SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT).  
TRANSPORT WINDS.....SOUTH 10 TO 20 MPH.  
MIXING HEIGHT.......9000-9500 FT AGL DECREASING TO 0-500 FT AGL.  
20-FOOT WINDS.......SOUTH TO SOUTHWEST WINDS 9 TO 17 MPH.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
CHANCE OF PCPN......10 PERCENT.  
 
TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM  
SKY (%).........MCLEAR MCLEAR PCLDY PCLDY PCLDY MCLEAR  
WEATHER COV.....  
WEATHER TYPE....NONE NONE NONE NONE NONE NONE  
TEMP............92 88 80 76 73 70  
RH..............27 33 45 54 60 66  
20 FT WIND......S 12 S 12 S 12 S 12 S 9 S 7  
20 FT WIND GUST.15 20 15 15 10 10  
CHC OF PCPN (%).0 10 10 10 10 10  
HAINES INDEX....2 2 2 2 3 3  
VENTR KTFT/1000.0 0 0 0 0 0  
   
FRIDAY
 
 
SMOKE DISPERSAL.....POOR (0 KNOT-FT).  
MAX TEMPERATURE.....AROUND 93.  
LAL.................1.  
MIN HUMIDITY........26 PERCENT.  
SKY/WEATHER.........SUNNY (20-30 PERCENT).  
TRANSPORT WINDS.....SOUTH 9 TO 15 MPH.  
MIXING HEIGHT.......0 FT AGL INCREASING TO 10500-11500 FT AGL.  
20-FOOT WINDS.......SOUTH WINDS 8 TO 12 MPH.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
CHANCE OF PCPN......10 PERCENT.  
 
TIME (CDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM  
SKY (%).........MCLEAR MCLEAR MCLEAR MCLEAR MCLEAR PCLDY  
WEATHER COV.....  
WEATHER TYPE....NONE NONE NONE NONE NONE NONE  
TEMP............66 70 81 88 91 92  
RH..............75 66 46 35 30 27  
20 FT WIND......SW 8 SW 9 W 10 S 9 S 8 S 9  
20 FT WIND GUST.10 10 15 10 10 10  
CHC OF PCPN (%).10 10 10 10 10 10  
HAINES INDEX....3 2 2 2 2 2  
VENTR KTFT/1000.0 0 0 0 0 0  
 

 
FORECASTER...WARD  
REQUESTED BY...BRAD BRITTEN  
TYPE OF REQUEST...WILDFIRE  
.TAG 1712676.0/AMA  
 
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