447
FXUS64 KLCH 292339
AFDLCH
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
639 PM CDT WED JUL 29 2026
..NEW AVIATION
KEY MESSAGES
- DANGEROUS HEAT CONTINUES WITH TEMPERATURES IN THE MID 90S TO
AROUND 100 AND HEAT INDICES OF 105-110F.
- A HEAT ADVISORY IS IN EFFECT FOR AREAS EAST OF I-49 AND ALONG
THE ATCHAFALAYA THIS AFTERNOON AND WEDNESDAY AFTERNOON.
- RAIN CHANCES AND SLIGHTLY COOLER TEMPERATURES ARRIVE LATE IN THE
WORK WEEK AND INTO THE WEEKEND.
DISCUSSION
(THIS EVENING THROUGH NEXT TUESDAY)
ISSUED AT 1220 PM CDT WED JUL 29 2026
ANOTHER HOT AND HUMID DAY IS ONGOING ACROSS THE REGION, BUT IT IS
LATE JULY. HEAT INDICES ACROSS THE REGION ARE RANGING FROM 95 TO
105, BUT TEMPS WILL CONTINUE TO INCREASE THROUGH THE NEXT FEW
HOURS. MOISTURE MAY MIX OUT DROPPING DEWPOINTS A FEW DEGREES WHICH
MAY KEEP HIS FROM RISING TOO MUCH MORE. ALONG THE SEABREEZE,
HOWEVER, DEWPOINTS MAY STAY ELEVATED ENOUGH TO ALLOW A FEW HIS TO
HIT 108 ALONG AND SOUTH OF I-10. HIGHER MOISTURE LEVELS ALONG THE
ATCHAFALAYA SHOULD ALSO KEEP HIS AROUND 108 DURING THE MID
AFTERNOON. SIMILAR CONDITIONS ARE EXPECTED WEDNESDAY.
THE RIDGE ALOFT WILL GRADUALLY WEAKEN AND RETROGRADE AT THE END OF
THE WEEK AND INTO THE WEEKEND. RAIN CHANCES WILL INCREASE
SOMEWHAT FRIDAY AND SATURDAY WHICH WILL DECREASE TEMPERATURES
SLIGHTLY, BUT AWAY FROM HEAT ADVISORY CRITERIA.
A WEAK BOUNDARY MAY MOVE INTO THE REGION BY SUNDAY WHICH WOULD
INCREASE RAIN CHANCES FARTHER. A TROUGH ALOFT WILL DIG INTO THE SE
STATES WITH THE LOCAL REGION REMAINING ROUGHLY BETWEEN THE RIDGE
OVER THE SW AND THE TROUGH. THIS MAY ALLOW A MORE TYPICAL PATTERN
WITH DIURNAL CONVECTION TO START THE NEXT WEEK.
AVIATION
(00Z TAFS)
ISSUED AT 634 PM CDT WED JUL 29 2026
WEAK SURFACE HIGH PRESSURE OVER THE SOUTHEASTERN GULF AND RIDGING
ALOFT OVER THE SOUTH CENTRAL U.S. WILL MAINTAIN VFR CONDITIONS
THROUGH THE PERIOD WITH LIGHT SOUTHWESTERLY WINDS.
A TECHNICAL ISSUE WITH THE AEX VISIBILITY SENSOR IS CAUSING IT TO
INCORRECTLY REPORT SUB OPTIMAL VISIBILITY. AEX ATC CONFIRMS THAT
WHILE THERE IS OCCASIONAL LIGHT HZ, THE INSTRUMENT DOES NOT
PRESENTLY REFLECT REALISTIC VISIBILITIES.
JONES
MARINE
ISSUED AT 1220 PM CDT WED JUL 29 2026
LIGHT WINDS AND LOW SEAS ARE ANTICIPATED THROUGH SATURDAY. A WEAK
BOUNDARY MAY DRIFT TO NEAR THE NORTHERN GULF COAST LATE IN THE
WEEKEND WHICH WILL INCREASE THUNDERSTORM CHANCES.
FIRE WEATHER
ISSUED AT 1220 PM CDT WED JUL 29 2026
HOT AND HUMID CONDITIONS ARE ANTICIPATED THROUGH THE PERIOD. RAIN
CHANCES WILL INCREASE BY THE END OF THE WEEK AND THROUGH THE
WEEKEND AS THE RIDGE ALOFT WEAKENS.
LCH WATCHES/WARNINGS/ADVISORIES
LA...HEAT ADVISORY UNTIL 8 PM CDT THIS EVENING FOR LAZ028-029-032-033-
044-045-055-143-152>154-243-252>254.
HEAT ADVISORY FROM 11 AM TO 8 PM CDT THURSDAY FOR LAZ028-029-032-
033-044-045-055-143-152>154-243-252>254.
TX...NONE.
GM...NONE.
PUBLIC/FIRE/MARINE...05
AVIATION...66
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