054
FXUS64 KLCH 230540
AFDLCH
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
1240 AM CDT SUN AUG 23 2026
..NEW DISCUSSION, AVIATION, MARINE, FIRE WEATHER
KEY MESSAGES
- A HEAT ADVISORY IS IN EFFECT AGAIN TODAY FROM 11 AM UNTIL 8 PM.
AFTERNOON HIGHS WILL AGAIN CLIMB TO NEAR 100 DEGREES WITH
MAXIMUM APPARENT TEMPERATURES RANGING FROM 109 TO 115.
- TEMPERATURES WILL REMAIN ABOVE NORMAL THROUGH TUESDAY BEFORE
RETURNING NEARER TO NORMAL THROUGH THE SECOND HALF OF THE WEEK.
- A FEW AFTERNOON THUNDERSTORMS ARE EXPECTED EACH DAY, BUT THE
MAJORITY OF THE REGION WILL REMAIN DRY THROUGH WEDNESDAY.
PRECIPITATION CHANCES WILL INCREASE THURSDAY INTO NEXT WEEKEND.
DISCUSSION
(TODAY THROUGH SATURDAY)
ISSUED AT 1212 AM CDT SUN AUG 23 2026
AFTER BREAKING DAILY HIGH TEMPERATURE RECORDS SATURDAY AFTERNOON
AT BOTH THE LAKE CHARLES AND BEAUMONT AIRPORTS, DEWPOINTS IN THE
UPPER 70S TO 80 ARE KEEPING APPARENT TEMPERATURES EVEN AT MIDNIGHT
IN THE MID 90S TO NEAR 100. IT DOES MAKE ONE WONDER HOW THE PRE
ELECTRICAL WORLD MANAGED TO SUBSIST IN THE GULF SOUTH IN AUGUST.
LITTLE CHANGE IN THE SYNOPTIC FORECAST PATTERN IS EXPECTED TODAY OR
MONDAY AS A BROAD UPPER LEVEL RIDGE CONTINUES TO DOMINATE THE
SOUTH CENTRAL U.S. KEEPING BOTH HIGH AND LOW TEMPERATURES ABOVE
NORMAL EVEN BY MID AUGUST STANDARDS. NO CHANGES WERE MADE TO THE
PREVIOUSLY ISSUED HEAT ADVISORY WHICH WILL AGAIN BE IN EFFECT
TODAY FROM 11 AM UNTIL 8 PM. FORECAST MAXIMUM HEAT INDICES ARE
EXPECTED TO RANGE FROM 109-115 POSING A HEALTH RISK TO ANYONE
UNABLE TO FIND SUFFICIENT SOURCES OF COOLING.
SHORT RANGE GUIDANCE IS IN GOOD AGREEMENT ON THE COMBINATION OF
HEAT RELATED INSTABILITY AND A DEVELOPING AFTERNOON SEA BREEZE
PRODUCING A FEW (20-30%) THUNDERSTORMS THIS AFTERNOON AND THOSE
LUCKY ENOUGH TO FIND THEMSELVES UNDERNEATH ONE WILL GET A BRIEF
REPRIEVE FROM BOTH THE HEAT AS WELL AS THE EXPANDING DROUGHT
ACROSS THE REGION. ANY STORMS THAT DEVELOP WILL DISSIPATE AROUND
SUNSET.
INCREASING MID LEVEL MOISTURE WILL WRAP AROUND THE EASTERN
PERIPHERY OF THE RIDGE MONDAY THROUGH WEDNESDAY OFFERING BETTER
(30- 50%) PRECIPITATION CHANCES FOR THOSE ALONG AND EAST OF THE
ATCHAFALAYA BASIN. THE REMAINDER OF THE REGION WILL CONTINUE TO
BROIL IN THE CAJUN SAUNA WITH HEAT ADVISORIES LIKELY NEEDED EACH
AFTERNOON.
THE PERSISTENT UPPER LEVEL RIDGE WILL RETROGRADE WEST INTO THE FOUR
CORNERS REGION BY THURSDAY ALLOWING DEEPER UPPER LEVEL MOISTURE TO
SINK INTO THE AREA ALONG A WEAK BOUNDARY. THIS IS EXPECTED TO
SUBSTANTIALLY INCREASE (30-70%) PRECIPITATION CHANCES ACROSS THE
REGION WHILE, CONCORDANTLY, DROPPING AFTERNOON HIGHS BACK TO "ONLY"
THE LOW TO MID 90S.
JONES
AVIATION
(06Z TAFS)
ISSUED AT 1212 AM CDT SUN AUG 23 2026
VFR CONDITIONS WILL PREVAIL THROUGH THE PERIOD. LIGHT
WESTERLY WINDS THIS MORNING WILL BECOME SOUTHWESTERLY THIS
AFTERNOON. A FEW AFTERNOON THUNDERSTORMS ARE EXPECTED TO DEVELOP
BETWEEN 19-00Z DURING MAXIMUM HEATING AS WELL AS ALONG AN INLAND
ADVANCING SEA BREEZE. ANY STORMS THAT DEVELOP WILL DISSIPATE BY 01Z.
JONES
MARINE
ISSUED AT 1212 AM CDT SUN AUG 23 2026
LIGHT ONSHORE WINDS WILL PERSIST THROUGH THE WEEK WITH SEAS
RANGING FROM 1-2 FEET. PRECIPITATION CHANCES RETURN ACROSS THE
COASTAL WATERS THURSDAY INTO NEXT WEEKEND.
FIRE WEATHER
ISSUED AT 1212 AM CDT SUN AUG 23 2026
A FEW AFTERNOON THUNDERSTORMS WILL DEVELOP EACH DAY
THROUGH WEDNESDAY WITH THE HIGHEST PROBABILITIES IN AND AROUND THE
ATCHAFALAYA BASIN. BETTER PRECIPITATION CHANCES ARE EXPECTED AREA
WIDE THURSDAY THROUGH NEXT WEEKEND.
KBDI VALUES PRESENTLY RANGE FROM 530 TO 750 ACROSS THE REGION AND WILL
CONTINUE CLIMBING AS DROUGHT CONDITIONS WORSEN OVER THE NEXT
COUPLE OF WEEKS. DAILY MINIMUM RELATIVE HUMIDITY WILL RANGE FROM
40-50% AWAY FROM THE IMMEDIATE COASTLINE THROUGH THE MIDDLE OF THE
WEEK. PERSONAL OUTDOOR BURNING IS STRONGLY DISCOURAGED. BURN BANS
HAVE BEEN ISSUED FOR MOST PARISHES AND COUNTIES BY LOCAL GOVERNMENTS.
CONSULT YOUR LOCAL FIRE DEPARTMENTS FOR MORE INFORMATION.
LCH WATCHES/WARNINGS/ADVISORIES
LA...HEAT ADVISORY FROM 11 AM THIS MORNING TO 8 PM CDT THIS EVENING
FOR LAZ027>033-044-045-055-073-074-141>143-152>154-241>243-
252>254.
TX...HEAT ADVISORY FROM 11 AM THIS MORNING TO 8 PM CDT THIS EVENING
FOR TXZ180-201-259>262-515-516-615-616.
GM...NONE.
PUBLIC/FIRE/MARINE...66
AVIATION...66
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page