076  
FXUS64 KLIX 230701  
AFDLIX  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE NEW ORLEANS LA  
201 AM CDT WED AUG 23 2017  
   
06Z SOUNDING DISCUSSION
 
 
ROUTINE FLIGHT TERMINATED JUST WEST OF MADISONVILLE AT A HEIGHT OF  
111,000 FEET OR 21 MILES ABOVE THE SURFACE.  
 
AIRMASS HAS DRIED SINCE 00Z FLIGHT WITH PRECIPITABLE WATER VALUES  
DOWN TO 1.85, WITH DRYING ESPECIALLY NOTICEABLE AROUND 700 MB.  
PARCEL IS SOMEWHAT MORE UNSTABLE WITH MUCAPE OF 3588 J/KG, A  
LIFTED INDEX OF -8 AND MID LEVEL LAPSE RATES OF 6.5C/KM. FREEZING  
LEVEL REMAINS NEAR 16,000 FEET, THE -20C AT 26,700 FEET AND THE  
WET BULB ZERO LEVEL JUST BELOW 13,000 FEET.  
 
LIGHT SOUTHERLY WINDS IN THE BOUNDARY LAYER OCCASIONALLY BECAME  
EASTERLY BETWEEN 850 AND 750 MB, AND AGAIN BRIEFLY AROUND 570 MB.  
WINDS BECAME SOUTHWEST BETWEEN 300 AND 150 MB. WINDS WERE A LITTLE  
STRONGER IN THE MID AND UPPER LEVELS WITH THIS FLIGHT. MAXIMUM  
WIND BELOW 50 MB WAS 30 KNOTS NEAR 250 MB, NEAR 36,000 FEET. 35  
 

 
   
PREV DISCUSSION
 
/ISSUED 1142 PM CDT TUE AUG 22 2017/  
 
AVIATION...  
SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS WILL AGAIN BE THE  
MAIN IMPACT ON THE TERMINALS DURING THIS TAF FORECAST PERIOD.  
THE CONVECTION WILL BE MOST LIKELY DURING LATE MORNING AND IN THE  
AFTERNOON HOURS WEDNESDAY. PATCHY FOG WILL WILL ALSO BE POSSIBLE  
AROUND DAYBREAK WEDNESDAY...PRIMARILY AT KMCB...POSSIBLY RESULTING  
IN A BRIEF PERIOD OF MVFR VSBYS. OTHERWISE, VFR CATEGORY  
CONDITIONS WILL PREVAIL OUTSIDE AREAS OF CONVECTION. 11  
 

 
   
PRELIMINARY POINT TEMPS/POPS
 
 
MCB 73 88 71 90 / 50 60 30 50  
BTR 75 90 74 90 / 50 60 30 60  
ASD 76 92 76 92 / 40 40 30 40  
MSY 77 92 78 90 / 20 40 30 50  
GPT 77 89 77 90 / 30 40 30 40  
PQL 75 90 75 91 / 30 50 30 40  
 

 
   
LIX WATCHES/WARNINGS/ADVISORIES
 
 
LA...NONE.  
GM...NONE.  
MS...NONE.  
GM...NONE.  

 
 

 
 
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