921
FXUS64 KLCH 301746
AFDLCH
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
1246 PM CDT THU JUL 30 2026
..NEW DISCUSSION, MARINE, FIRE WEATHER
KEY MESSAGES
- DANGEROUS HEAT CONTINUES THROUGH SATURDAY WITH AFTERNOON HIGHS IN
THE MID 90S TO NEAR 100 AND HEAT INDICES OF 105-110F.
- A HEAT ADVISORY IS IN EFFECT FOR ALL OF SOUTHEAST TEXAS AND
SOUTHWEST, CENTRAL AND SOUTH CENTRAL LOUISIANA THIS AFTERNOON.
- A FEW SHOWERS MAY DEVELOP THIS AFTERNOON ALONG THE SEA BREEZE.
BETTER PRECIPITATION CHANCES RETURN SUNDAY WITH AFTERNOON POP UP
THUNDERSTORMS EXPECTED EACH DAY NEXT WEEK.
DISCUSSION
(THIS EVENING THROUGH NEXT WEDNESDAY)
ISSUED AT 1245 PM CDT THU JUL 30 2026
THE AREA REMAINS BETWEEN A RIDGE CENTERED OVER THE SOUTHERN
ROCKIES AND AN EAST COAST TROF, BUT SLIGHTLY MORE UNDER THE UPPER
RIDGE. WITH THE RIDGE NOT COMPLETELY IN CONTROL, A FEW SHOWERS
WILL BE POSSIBLE THROUGH THE AFTERNOON, BUT MAINLY ALONG THE SEA
BREEZE INTO THE ATCHAFALAYA BASIN. WITH SPARSE CLOUD COVER, TEMPS
HAVE CLIMBED INTO THE LOW 90S AND WILL CONTINUE TO MOVE INTO THE
MID TO UPPER 90S THIS AFTERNOON. HIS ARE EXPECTED TO TOP OUT IN
THE 105 TO 110 RANGE WITH SPOTTY AREAS HITTING THE HEAT ADV
CRITERIA OF 108 AND HIGHER.
TEMPERATURES ARE FORECAST TO BE AROUND A DEGREE OR TWO LOWER AT
MOST LOCATIONS FRIDAY, HOWEVER MAX HIS MAY STILL BRIEFLY HIT 108
AT ISOLATED LOCATIONS. AT THIS TIME CONFIDENCE IS NOT HIGH ENOUGH
TO ISSUE ANOTHER HEAT ADVISORY, ESPECIALLY SINCE 90% OF THE AREA
MAY NOT REACH CRITERIA.
THE EAST COAST TROF WILL ALLOW A WEAK BOUNDARY TO DRIFT INTO THE
AREA LATE SATURDAY. AHEAD OF THE BOUNDARY SATURDAY AFTERNOON,
COMPRESSIONAL HEATING MAY PUSH THE I-10 CORRIDOR TO THE COAST WELL
INTO HEAT ADV CRITERIA. CLOUD COVER MOVING IN DURING DURING SAT
AFTERNOON OVER DEEP SE TX AND CEN LA MAY HOLD MAX APPARENT TEMPS
JUST SHY OF CRITERIA.
RAIN CHANCES INCREASE SATURDAY EVENING INTO EARLY SUNDAY AS THE
BOUNDARY MOVES IN. MORE TYPICAL TEMPS AND PRECIP CHANCES ARE
EXPECTED FOR NEXT WEEK.
AVIATION
(18Z TAFS)
ISSUED AT 1212 PM CDT THU JUL 30 2026
THE CU FIELD DEVELOPING ALONG THE SEA BREEZE WILL CAUSE BRIEF
PERIODS OF MVFR CEILINGS THIS AFTERNOON ALONG THE I-10 CORRIDOR. A
BRIEF SHOWER MAY ALSO OCCUR, BUT MAINLY AT LFT OR ARA. GENERALLY
SOUTHWEST WINDS ARE ANTICIPATED DURING THE PERIOD.
MARINE
ISSUED AT 1245 PM CDT THU JUL 30 2026
A LIGHT SOUTHWEST FLOW WILL REMAIN IN PLACE INTO SATURDAY EVENING,
HOWEVER A WEAK BOUNDARY MAY MOVE INTO THE COASTAL WATERS EARLY
SUNDAY WITH A BRIEF PERIOD OF OFFSHORE WINDS. SOUTH TO SW WINDS
WILL OCCUR AGAIN BY SUNDAY EVENING AND LAST INTO THE MIDDLE OF
NEXT WEEK.
FIRE WEATHER
ISSUED AT 1245 PM CDT THU JUL 30 2026
HOT AND GENERALLY DRY WEATHER IS ANTICIPATED THROUGH SATURDAY,
HOWEVER AN ISOLATED SHOWER WILL BE POSSIBLE ALONG THE SEA BREEZE.
A WEAK BOUNDARY WILL MOVE INTO THE AREA SATURDAY NIGHT INTO EARLY
SUNDAY MORNING WITH SCATTERED THUNDERSTORMS POSSIBLE.
LCH WATCHES/WARNINGS/ADVISORIES
LA...HEAT ADVISORY UNTIL 8 PM CDT THIS EVENING FOR LAZ027>033-044-045-
055-073-074-141>143-152>154-241>243-252>254.
TX...HEAT ADVISORY UNTIL 8 PM CDT THIS EVENING FOR TXZ180-201-259>262-
515-516-615-616.
GM...NONE.
PUBLIC/FIRE/MARINE...05
AVIATION...05
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