549
FXUS64 KLCH 171806
AFDLCH
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
106 PM CDT FRI JUL 17 2026
..NEW DISCUSSION, AVIATION, MARINE, FIRE WEATHER
KEY MESSAGES
- HIGH PRESSURE BUILDING INTO THE REGION THROUGH EARLY NEXT WEEK
WILL KEEP PRECIPITATION CHANCES NEGLIGIBLE THROUGH THE MIDDLE OF
NEXT WEEK.
- VERY HOT TEMPERATURES ARE EXPECTED THIS WEEKEND WITH AFTERNOON
HIGHS IN THE MID TO UPPER 90S AND HEAT INDICES BETWEEN 102 AND
115. A HEAT ADVISORY OR WARNING MAY BECOME NECESSARY DURING THE
AFTERNOONS.
DISCUSSION
(THIS EVENING THROUGH NEXT THURSDAY)
ISSUED AT 1258 PM CDT FRI JUL 17 2026
BENIGN CONDITIONS ONGOING WITH LITTLE TO NO CONVECTION EXPECTED
FOR THE REST OF THE AFTERNOON/EVENING. TEMPS ARE CURRENTLY A FEW
DEGREES ABOVE THEIR CLIMO NORMS WITH DEWPOINTS IN THE 70S,
YIELDING HEAT INDICES IN THE 97~106 RANGE. A RIDGE REMAINS
OVERHEAD, AND THIS WILL ASSIST IN KEEPING TEMPS HIGH AND THE AREA
DRY (RAIN WISE, NOT DEWPOINT WISE). AS THE UPPER RIDGE BUILDS AND
EXPANDS ACROSS THE AREA, A WARMING TREND WILL ENSUE. AFTERNOON
HIGHS WILL RISE CLOSER TO THE MID TO UPPER 90S AREAWIDE BY SUNDAY,
WITH A FEW SPOTS IN INTERIOR SETX AND CENLA SEEING TEMPS AT THE
100 DEGREE MARK DURING THE WORK WEEK. WHILE AFTERNOON RELATIVE
HUMIDITY VALUES ARE FORECAST TO DECREASE SLIGHTLY, DEWPOINTS ARE
STILL FORECAST TO REMAIN IN THE 70S. THIS COMBO WILL YIELD
AFTERNOON HEAT INDICES INTO THE 102 TO 113 DEGREE RANGE. AS A
RESULT, HEAT HAZARDS (BASELINE ADVISORIES OR WARNINGS) WILL ALMOST
CERTAINLY BECOME NECESSARY DURING THE AFTERNOON HOURS THIS WEEKEND
INTO EARLY NEXT WEEK.
AVIATION
(18Z TAFS)
ISSUED AT 1258 PM CDT FRI JUL 17 2026
MAINLY VFR CONDITIONS ONGOING AND EXPECTED TO PREVAIL THIS
AFTERNOON AND EVENING. AREAS OF LIGHT AND PATCHY GROUND FOG WILL
BE POSSIBLE AGAIN TONIGHT, WITH NO SIGNIFICANT IMPACTS EXPECTED.
WHATEVER FORMS WILL BE QUICK TO DISSIPATE AFTER SUNRISE, WITH VFR
CONDITIONS RESUMING FROM THERE.
MARINE
ISSUED AT 1258 PM CDT FRI JUL 17 2026
LIGHT SOUTHERLY TO WESTERLY FLOW AND LOW SEAS ARE EXPECTED TO
CONTINUE THROUGH THE FORECAST PERIOD WITH WEAK SURFACE HIGH
PRESSURE MEANDERING ABOUT. MAINLY DRY CONDITIONS ARE EXPECTED TO
PREVAIL AS HIGH PRESSURE BUILDS OVERHEAD.
FIRE WEATHER
ISSUED AT 1258 PM CDT FRI JUL 17 2026
LIGHT SOUTHERLY TO WESTERLY WINDS WILL PREVAIL THROUGH THE WEEK
AND WEEKEND, KEEPING DEWPOINTS IN THE 70S AND MINIMUM RH VALUES IN
THE 50 TO 65 PERCENT RANGE. RIDGING WILL BUILD ACROSS THE
NORTHERN GULF TODAY THROUGH EARLY NEXT WEEK, DROPPING RAIN
CHANCES TO NEAR ZERO. WHILE THIS DRIER AIRMASS WILL LOWER
AFTERNOON RH VALUES INTO THE 40 TO 50 PERCENT RANGE EARLY NEXT
WEEK, NO SIGNIFICANT FIRE WEATHER CONCERNS ARE EXPECTED. HOWEVER
THE DRIER AIRMASS WILL NOT BE "DRY" ENOUGH TO ESCAPE HEAT
HAZARDS.
LCH WATCHES/WARNINGS/ADVISORIES
LA...NONE.
TX...NONE.
GM...NONE.
PUBLIC/FIRE/MARINE...87
AVIATION...87
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