145
FXUS64 KLCH 170526
AFDLCH
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
1226 AM 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
113. A HEAT ADVISORY MAY BECOME NECESSARY DURING THE AFTERNOONS.
DISCUSSION
(TODAY THROUGH THURSDAY)
ISSUED AT 1222 AM CDT FRI JUL 17 2026
A RIDGE OF HIGH PRESSURE IS PARKED OVERHEAD TODAY. THE 16TH/00Z
SOUNDING HAS SHOWN SOME CONSIDERABLE DRYING THROUGHOUT THE
TROPOSPHERIC COLUMN OVER THE PREVIOUS DAY. FURTHER DRYING IS
EXPECTED REMAINDER OF THIS WEEK. THEREFORE, CHANCES OF PRECIPITATION
ARE NEGLIGIBLE THROUGH THE WEEKEND AS THIS AIRMASS REMAINS
STATIONARY. GENERALLY WINDS WILL REMAIN LIGHT WITH PRIMARILY ONSHORE
COMPONENTS, BUT OCCASIONALLY FALL TO VARIABLE OR CALM CONDITIONS-
MAINLY DURING THE OVERNIGHT HOURS.
AS MENTIONED IN PREVIOUS FORECAST DISCUSSIONS, THIS HIGH PRESSURE
PATTERN WILL BEGIN TO ACCUMULATE SUBSIDENCE ACROSS THE AREA. THIS
SINKING COMPRESSION OF THE AIR ALOFT WILL RESULT IN AN INCREASE OF
DAILY MAX TEMPERATURES THROUGH THE MIDDLE OF NEXT WEEK. HIGHS WILL
BEGIN TO HEDGE FURTHER IN THE MID TO UPPER 90S AREAWIDE SUNDAY. IT
IS POSSIBLE EARLY NEXT WEEK SOME INTERIOR LOCATIONS MAY TOUCH 100°F.
ALTHOUGH AFTERNOON RH IS FORECAST TO DECREASE AS AMBIENT SOIL
MOISTURE BEGINS TO EVAPORATE WITH NOW NEW INPUTS, OUR USUAL
LOUISIANA HUMIDITY IS LIABLE TO SEND PORTIONS OF THE FORECAST AREA
INTO HEAT ADVISORY TERRITORY WHEN CONSIDERING THE DEWPOINT. LOOKING
AT THE END OF THE FORECAST PERIOD, HIGH PRESSURE REMAINS IN PLACE
WITH NO ORGANIZE PRECIPITATION IN THE WORKS.
KOWALSKI / 30
AVIATION
(06Z TAFS)
ISSUED AT 1222 AM CDT FRI JUL 17 2026
CONDITIONS ARE FORECAST TO PREVAIL VFR OVERNIGHT. WINDS WILL BE LIGHT
/ VARIABLE AND AT TIMES CALM. VFR CONDITIONS EXPECTED TO PERSIST
THROUGH DAYLIGHT HOURS OF THE 17TH.
MARINE
ISSUED AT 1222 AM CDT FRI JUL 17 2026
LIGHT SOUTHERLY FLOW AND LOW SEAS ARE EXPECTED TO CONTINUE
THROUGH THE FORECAST PERIOD WITH WEAK SURFACE HIGH PRESSURE CENTERED
OVER THE NORTHEASTERN GULF. MAINLY DRY CONDITIONS ARE EXPECTED TO
PREVAIL AS HIGH PRESSURE BUILDS OVERHEAD. WINDS AND SEAS WILL BE
LOCALLY HIGHER NEAR THUNDERSTORMS.
FIRE WEATHER
ISSUED AT 1222 AM CDT FRI JUL 17 2026
LIGHT SOUTH TO SOUTHWEST 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 PRECIPITATION 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.
LCH WATCHES/WARNINGS/ADVISORIES
LA...NONE.
TX...NONE.
GM...NONE.
PUBLIC/FIRE/MARINE...30
AVIATION...30
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