196
FXUS64 KLCH 191109
AFDLCH
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
609 AM CDT WED AUG 19 2026
..NEW AVIATION
KEY MESSAGES
- A HEAT ADVISORY HAS BEEN ISSUED FOR CENLA TO SOUTHERN ACADIANA
FROM 11 AM TO 8 PM TODAY FOR INDICES UP TO 110F.
- UPPER RIDGE WILL REMAIN IN PLACE KEEPING AFTERNOON HIGHS ABOVE
NORMAL WITH NO APPRECIABLE RAINFALL THROUGH THE NEXT SEVEN
DAYS.
- VEGETATION WILL CONTINUE DRYING WITH THESE CONDITIONS. CHECK
WITH YOUR LOCAL OFFICIALS FOR BURN BANS ACROSS SETX AND CEN/SWLA.
DISCUSSION
(TODAY THROUGH TUESDAY)
ISSUED AT 1213 AM CDT WED AUG 19 2026
NEARLY A COPY PASTE FORECAST, HENCE LITTLE CHANGE IN THINKING FOR
THE DISCUSSION. THE STAGNANT PATTERN OF THE SURFACE HIGH PRESSURE
MEANDERING OVER THE GULF FOR THE NEXT SEVERAL DAYS AND THE RIDGE
ALOFT CONTINUING ITS OPPRESSIVE INFLUENCE OVER THE REGION SHALL
PERSIST. THIS WILL ALLOW FOR THE CONTINUATION OF ABOVE AVERAGE
TEMPERATURES. A COMBINATION OF THOSE HIGH TEMPERATURES AND
ELEVATED DEWPOINTS HAS LED TO ANOTHER HEAT ADVISORY THIS AFTERNOON
AND EVENING ACROSS THE EASTERN THIRD OF THE CWA. HEAT INDICES
WILL CONTINUE TO TAP DANCE ON THE THRESHOLD OF CRITERIA. DRIER
AIR MIXING DOWN WILL HELP KEEP HEAT INDEX VALUES LOWER ACROSS THE
WESTERN CWA, HOWEVER CONFIDENCE IN EXACT NUMBERS REMAINS LOW.
NEVERTHELESS.. IT'S HOT AND ALL SHOULD TAKE PROPER HEAT
PRECAUTIONS REGARDLESS OF ISSUANCE.
THE UPPER RIDGE WILL BE SHUNTED SLIGHTLY WESTWARD AS A BROAD
TROUGH SAGS SOUTHWARD. WHILE THIS FEATURE WILL ONLY BRING A FEW
DEGREES OF RELIEF, LIKE UP TO 3 ACTUAL DEGREES, IT COULD TRIGGER
ISOLATED CONVECTION. ANY RELIEF WILL BE SHORT LIVED, HOWEVER, AS
GUIDANCE INDICATES THE RIDGE BUILDING BACK OVER THE REGION FROM
THE WEEKEND INTO EARLY NEXT WEEK.
AVIATION
(12Z TAFS)
ISSUED AT 608 AM CDT WED AUG 19 2026
LIGHT WINDS AROUND 3-8 KTS AND VFR CONDITIONS WILL PREVAIL
THROUGHOUT THE PERIOD.
MARINE
ISSUED AT 1213 AM CDT WED AUG 19 2026
HIGH PRESSURE OVERTOP THE REGION WILL KEEP SKIES CLEAR OR MOSTLY
CLEAR WITH A PERSISTENT WEAK ONSHORE FETCH. WATERS WILL ALSO
REMAIN LOW OVER THE PERIOD.
FIRE WEATHER
ISSUED AT 1213 AM CDT WED AUG 19 2026
THE VERY HOT AND DRY CONDITIONS CONTINUE THROUGH THE REST OF THE
WEEK. HIGH PRESSURE OVERHEAD WILL ACT TO INCREASE TEMPS EACH DAY.
COMBINED WITH CONTINENTAL AIR MIXING INTO THE REGION, EXPECT DRY
VEGETATION TO FURTHER FEEL THESE EFFECTS. DAILY RH MINIMUMS WILL
RANGE FROM 30 TO 50 PERCENT. LOWER HUMIDITY TO THE NORTH AND
HIGHER TOWARDS THE COASTLINE.
LCH WATCHES/WARNINGS/ADVISORIES
LA...HEAT ADVISORY FROM NOON TODAY TO 8 PM CDT THIS EVENING FOR
LAZ028-029-032-033-044-045-055-143-153-154-253-254.
TX...NONE.
GM...NONE.
PUBLIC/FIRE/MARINE...87
AVIATION...17
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