097  
FXUS64 KLCH 202008  
AFDLCH  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE LAKE CHARLES LA  
308 PM CDT MON AUG 20 2018  
   
DISCUSSION
 
 
WX MAP SHOWS LARGE SFC LOW OVER THE PLAINS, WITH THE COOL FRONT OVER  
N TX. COOLER AND DRIER AIR BEHIND THE FRONT IN OK, WHERE MID TO  
UPPER 70S PREVAIL THERE. DOWN HERE, LOWER TO MID 90S PREVAIL, HEAT  
INDEX VALUES IN THE 100-105 RANGE. RADAR SHOWING SCATTERED SHRA/TSRA  
OVER THE I-10 CORRIDOR OF SE TX/S LA THIS AFTERNOON. EXPECT  
ADDITIONAL ACTIVITY FURTHER INLAND IN THE NEXT COUPLE OF HOURS.  
 
FOR THIS EVENING, THE COOL FRONT WILL GRADUALLY MOVE SOUTHEAST,  
WITH ADDITIONAL SHOWERS AND THUNDERSTORMS POSSIBLE ALONG AND AHEAD  
OF THE BOUNDARY. THUS, KEEPING 30-50% LATE THIS EVENING FOR THIS  
ACROSS INLAND SE TX/C LA. A BRIEF LULL EXPECTED AFTER MIDNIGHT,  
WITH SHOWERS AND THUNDERSTORMS FIRING UP TOWARD THE I-10 CORRIDOR  
SOUTHWARD INTO THE GULF BY TUESDAY MORNING.  
 
BEHIND THE FRONT, SLIGHTLY LOWER DEWPOINTS SHOULD KEEP MORNING  
LOWS NEAR 70/LOWER 70S WEDNESDAY THROUGH FRIDAY. AFTERNOON HIGHS  
WILL STILL BE IN THE LOWER TO MID 90 DURING THIS PERIOD, BUT THE  
LOWER DEWPOINTS IN THE MID 60S/NEAR 70 WILL KEEP THE HEAT INDEX  
LOWER FOR THESE DAYS.  
 
BY FRIDAY AFTERNOON INTO EARLY NEXT WEEK, THE MID TO UPPER LEVEL  
HIGH EXPECTED TO BUILD OVER THE SOUTHERN U.S. WITH THE TYPICAL  
LATE SUMMER SURFACE HIGH OFF THE EAST COAST. WHILE THE UPPER HIGH  
OVER THE REGION USUALLY SPELLS OPPRESSIVE HEAT, WE SHOULD SEE  
ENOUGH OF A SOUTHEAST FLOW OFF THE GULF TO BRING MOISTURE OFF THE  
GULF AND THE RETURN OF SCATTERED AFTERNOON SHOWERS AND  
THUNDERSTORMS DURING THIS PERIOD.  
 
DML  
 

 
   
MARINE
 
 
LIGHT TO OCCASIONALLY MODERATE ONSHORE FLOW WILL CONTINUE AS  
HIGH PRESSURE CONTINUES TO RIDGE ACROSS THE NORTHERN GULF. A  
FRONTAL BOUNDARY WILL SLOWLY MOVE SOUTH OVER THE REGION TUESDAY  
INTO WEDNESDAY, ACCOMPANIED BY AN INCREASING CHANCE FOR SHOWERS  
AND THUNDERSTORMS. THE FRONT IS EXPECTED TO STALL OVER OR JUST  
SOUTH OF THE COASTAL WATERS, BRINGING A BRIEF PERIOD OF OFFSHORE  
FLOW MID-WEEK. THE FRONT WILL GRADUALLY DISSIPATE BY THE END OF  
THE WEEK WITH RETURN FLOW EXPECTED TO RESUME.  
 
DML  
 

 
   
PRELIMINARY POINT TEMPS/POPS
 
 
AEX 75 95 68 95 / 50 20 10 10  
LCH 79 94 74 96 / 20 40 10 10  
LFT 77 93 74 95 / 20 40 10 10  
BPT 79 94 75 96 / 20 40 20 10  
 

 
   
LCH WATCHES/WARNINGS/ADVISORIES
 
 
LA...NONE.  
TX...NONE.  
GM...NONE.  

 
 

 
 
PUBLIC...08  
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab LA Page
The Nexlab TX Page Main Text Page