889  
FXUS64 KSHV 251120  
AFDSHV  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE SHREVEPORT LA  
620 AM CDT SUN JUN 25 2017  
   
AVIATION
 
 
SCATTERED SHOWERS WITH EMBEDDED THUNDERSTORMS CONTINUE TO DEVELOP  
ROUGHLY NEAR THE I-20 CORRIDOR OF NORTHEAST TEXAS INTO NORTHERN  
LOUISIANA THUS INFLUENCING OUR I-20 TERMINAL LOCATIONS. -TSRA IS  
VERY ISOLATED SO HAVE CHOSEN TO PREVAIL VCSH ACROSS ALL TERMINALS  
THIS MORNING WITH TEMPO -TSRA DURING THE MORNING HOURS. CEILINGS  
ARE MOSTLY VFR ACROSS THESE SAME TERMINALS BUT WE ARE DEALING WITH  
LIFR CEILINGS AT THE LFK TERMINAL WHERE LOW LEVEL MOISTURE NEVER  
SCOURED OUT ON SATURDAY. SHORT TERM PROGS SUPPORT A GRADUAL  
DECREASE IN PRECIP COVERAGE AND INTENSITY BY LATE MORNING INTO THE  
AFTERNOON HOURS SO HAVE TRENDED THE 12Z TERMINAL PACKAGE THAT WAY.  
LIFR CEILINGS AT THE LFK TERMINAL SHOULD GIVE WAY TO VFR CEILINGS  
BY LATE MORNING INTO THE AFTERNOON HOURS AS WELL.  
 
LOOK FOR EAST TO EAST NORTHEAST WINDS MAINLY LESS THAN 10KTS TODAY  
BECOMING LIGHT OVERNIGHT.  
 
13  
 

 
   
PREV DISCUSSION
 
/ISSUED 341 AM CDT SUN JUN 25 2017/  
 
DISCUSSION...  
DRIER AIRMASS CONTINUES TO GRADUALLY WORK ITS WAY SWD INTO THE  
AREA TODAY. ALTHOUGH SFC FRONT IS LOCATED JUST SOUTH OF I-20, EXPECTING  
ISOLD CONVECTION TO DEVELOP SOUTH OF 850 MB FRONTAL BOUNDARY,  
WHICH IS JUST NORTH OF I-20. HOWEVER, WITH ISOLD SHOWERS  
DEVELOPING RECENTLY WELL NORTH OF ELEVATED FRONT, AND EVEN NORTH  
OF CWA, WILL ADD 20 PERCENT CHANCE OF SHOWERS ACROSS NORTHERN  
PORTIONS OF AREA, FOR THE MORNING HOURS. DEWPOINTS IN LOWER 60S  
JUST NORTH OF CWA WILL ALSO SHIFT SOUTH, WITH OVERNIGHT LOWS  
FALLING INTO 60S FOR MUCH OF AREA BY TONIGHT. BROAD UPPER RIDGE  
HELP KEEP PATTERN IN PLACE THRU MID WEEK, CONFINING ANY LOW POPS  
TO SOUTHERN PORTIONS OF AREA. ZONAL FLOW TO CONTINUE ACROSS MUCH  
OF REST OF CONUS. STRONG SHORT WAVES MOVG ACROSS UPPER MIDWEST  
LATER IN WEEK WILL SERVE TO BREAK DOWN UPPER RIDGE AND POPS WILL  
INCREASE AS COOLING ALOFT STEEPENS LAPSE RATES, AND INCREASED  
UPPER RIDGING OVER SE STATES HELPS PUMP GULF MOISTURE BACK INTO  
REGION. SEASONAL TEMPS EXPECTED IN UPPER 80S TO LOWER 80S  
BEGINNING TUESDAY, AND OVERNIGHT LOWS WILL REBOUND BACK TO AROUND  
THE LOWER 70S BY LATER IN THE WEEK.  
 
/07/  
 

 
   
PRELIMINARY POINT TEMPS/POPS
 
 
SHV 86 65 88 68 / 20 10 10 10  
MLU 87 63 88 67 / 20 10 10 10  
DEQ 88 62 86 62 / 20 10 10 10  
TXK 87 64 87 67 / 20 10 10 10  
ELD 87 61 87 64 / 20 10 10 10  
TYR 86 66 86 69 / 20 20 20 10  
GGG 86 65 88 68 / 20 10 20 10  
LFK 85 68 87 69 / 40 20 20 10  
 

 
   
SHV WATCHES/WARNINGS/ADVISORIES
 
 
AR...NONE.  
LA...NONE.  
OK...NONE.  
TX...NONE.  

 
 

 
 
07/13  
 
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