433
FXUS64 KLCH 121117
AFDLCH
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
617 AM CDT WED AUG 12 2026
..NEW AVIATION
KEY MESSAGES
- LOWER RAIN CHANCES ARE EXPECTED FROM THE MIDDLE INTO THE
UPCOMING WEEKEND.
- HIGHER TEMPERATURES AND ELEVATED DEWPOINTS WILL YIELD HIGHER
HEAT INDICES.
DISCUSSION
(TODAY THROUGH TUESDAY)
ISSUED AT 1215 AM CDT WED AUG 12 2026
OUTSIDE OF CURRENT TEMPERATURES BEING A TOUCH HIGHER, VERY SIMILAR
CONDITIONS TO 24H AGO. SOME AREAS ARE STILL LINGERING IN THE LOWER
80S WITH ELEVATED DEWPOINTS, MAKING IT QUITE HUMID OUT. AREAS OF
HIGH PRESSURE AT THE SURFACE WILL MEANDER OVER THE SECONUS AND
GULF BEFORE EXPANDING WESTWARD OVER LA/TX. THIS WILL KEEP FLOW
GENERALLY LIGHT AND SOUTHERLY GOING INTO THE WEEKEND.
ALOFT WE HAVE A RIDGE ALMOST DIRECTLY OVERHEAD AND COVERING MOVE
OF THE GULF AND INTO THE SOUTHERN PLAINS. THE UPPER RIDGE IS STILL
FORECAST TO EXPAND WESTWARD AND BECOME CENTERED OVER THE LOWER
MISSISSIPPI RIVER VALLEY THROUGH THE WEEK, THEN MEANDER INTO THE
WEEKEND BEFORE SLOWLY SHIFTING WESTWARD INTO THE SOUTHERN PLAINS
NEXT WEEK.
WITH THE RIDGE BECOMING INCREASINGLY ESTABLISHED OVERHEAD,
TEMPERATURES WILL STEADILY CLIMB WHILE POPS REMAIN ISOLATED AT
BEST THROUGH THE REMAINDER OF THE FORECAST PERIOD. THE COMBINATION
OF AFTERNOON TEMPERATURES IN THE MID TO UPPER 90S AND DEWPOINTS IN
THE 70S WILL YIELD HEAT INDICES GENERALLY IN THE 103 TO 112 RANGE,
MEANING SOME HEAT HAZARDS MAY BE NEEDED FOR PORTIONS OF THE
FORECAST AREA.
AVIATION
(12Z TAFS)
ISSUED AT 615 AM CDT WED AUG 12 2026
VFR CONDITIONS WILL CONTINUE FOR THE NEXT 24 HOURS. WINDS WILL BE
LIGHT AND PRIMARILY FROM THE SOUTH.
MARINE
ISSUED AT 1215 AM CDT WED AUG 12 2026
SURFACE HIGH PRESSURE OVER THE NORTHEAST GULF WILL KEEP WINDS OUT OF
THE SOUTH AROUND 5-15 KT THROUGHOUT THE FORECAST PERIOD. A FEW
SHOWERS/STORMS ARE POSSIBLE THROUGH TODAY, AFTER WHICH HIGH
PRESSURE ALOFT WILL BUILD AND HELP KEEP RAIN CHANCES NEAR ZERO
THROUGH THE END OF THE WEEK.
FIRE WEATHER
ISSUED AT 1215 AM CDT WED AUG 12 2026
ISOLATED AFTERNOON SHOWERS WILL NOT BE OUT OF THE REALM OF
POSSIBILITY THIS AFTERNOON WITH A WARM, MOIST AIRMASS IN PLACE.
AN UPPER RIDGE WILL NEARLY PUT AN END TO RAIN CHANCES FROM
THURSDAY THROUGH THE END OF THE WEEK. DRIER AIR MOVING IN ALOFT
WILL RESULT IN AFTERNOON RH MINIMUM VALUES DROPPING TO NEAR 40
PERCENT FOR OUR INLAND COUNTIES/PARISHES BY THE WEEKEND, THOUGH
WINDS THROUGHOUT THE PERIOD WILL REMAIN LIGHT (LESS THAN 10 KT).
LCH WATCHES/WARNINGS/ADVISORIES
LA...NONE.
TX...NONE.
GM...NONE.
PUBLIC/FIRE/MARINE...87
AVIATION...14
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