497
FXUS64 KLCH 181105
AFDLCH
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
605 AM CDT FRI SEP 18 2026
..NEW AVIATION
KEY MESSAGES
- DRIER AIR WILL REMAIN ACROSS THE REGION THROUGH SATURDAY, WHICH
WILL KEEP HEAT INDICES BELOW ADVISORY CRITERIA. HIGH TEMPS WILL
STILL RANGE 5 TO 10 DEGREES ABOVE CLIMATOLOGICAL NORMS FOR THE
END OF SUMMER.
- PRECIPITATION CHANCES SLIGHTLY INCREASE SUNDAY INTO EARLY NEXT
WEEK, AS AN AREA OF LOW PRESSURE MOVES ACROSS THE NORTHEASTERN
GULF.
DISCUSSION
(TONIGHT THROUGH NEXT THURSDAY)
ISSUED AT 1146 PM CDT THU SEP 17 2026
AN UPPER RIDGE IS CENTERED OVER THE OZARKS, WHERE IT WILL MEANDER
FOR THE NEXT FEW DAYS BEFORE SLIGHTLY WEAKENING AND SHIFTING BACK
OVER TX / THE SOUTHERN PLAINS. THIS HAS HELPED SUPPRESS SHOWERS
AND STORMS, WHILE ALSO KEEPING THE REGION GENERALLY DRIER AND MUCH
WARMER. WHILE TEMPERATURES WILL BE NEARLY 5 TO 10 DEGREES ABOVE
CLIMATOLOGICAL NORMALS FOR THIS TIME OF YEAR, THE DRIER AIRMASS
WILL LIMIT HEAT INDEX VALUES FROM REACHING HEAT HAZARD CRITERIA.
NEVERTHELESS, IT WILL STILL BE PLENTY HOT, AND CAUTION WILL BE
WARRANTED.
AS THE AFOREMENTIONED RIDGE BEGINS TO WEAKEN AND SHIFT FARTHER
WEST OVER TEXAS, ALONG WITH A TROUGH MOVING WESTWARD OFF THE
FLORIDA GULF COAST, WE WILL SEE A GRADUAL RETURN OF MOISTURE AND
ISOLATED POPS TO THE FORECAST.
AVIATION
(12Z TAFS)
ISSUED AT 604 AM CDT FRI SEP 18 2026
DRY AIR AND HIGH PRESSURE WILL KEEP SKIES FOR THE NEXT 24 HOURS.
WINDS WILL BE LIGHT AND VARIABLE.
MARINE
ISSUED AT 1146 PM CDT THU SEP 17 2026
THE PRESSURE GRADIENT OVER THE REGION WILL CONTINUE TO RELAX, WITH
WINDS AND SEAS FOLLOWING SUIT. THANKS TO DRIER AIR AND HIGH
PRESSURE ALOFT, CHANCES FOR SHOWERS AND STORMS WILL BE MINIMAL
OVER THE WATERS THROUGH THE NEXT FEW DAYS.
FIRE WEATHER
ISSUED AT 1146 PM CDT THU SEP 17 2026
A DRY AIRMASS WILL MOVE ACROSS THE REGION THROUGH SATURDAY. MINRH
VALUES WILL FALL INTO THE 30S TO MID 40S ACROSS MOST INTERIOR
LOCATIONS BOTH FRIDAY AND SATURDAY AFTERNOONS. MOISTURE WILL
INCREASE ONCE AGAIN SUNDAY INTO MONDAY. THE LATEST DROUGHT MAP HAS
A ONE CLASS DEGRADATION ACROSS SWLA AND PARTS OF LOWER ACADIANA.
WITH LITTLE TO NO RAINFALL EXPECTED THROUGH THE PERIOD, IT WILL
NOT BE OUT OF THE REALM OF POSSIBILITY TO SEE ANOTHER CLASS
DEGRADATION ACROSS OUR FORECAST AREA NEXT WEEK.
LCH WATCHES/WARNINGS/ADVISORIES
LA...NONE.
TX...NONE.
GM...NONE.
PUBLIC/FIRE/MARINE...87
AVIATION...14
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