675
FXUS64 KLCH 161757
AFDLCH
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
1257 PM CDT WED SEP 16 2026
..NEW DISCUSSION, AVIATION, MARINE, FIRE WEATHER
KEY MESSAGES
- LOW END RAIN CHANCES WILL EXIST THROUGH SUNSET TODAY, BUT MAINLY
ALONG THE COAST INTO THE I-10 CORRIDOR.
- DRIER AIR WILL MOVE INTO THE REGION, THURSDAY AND FRIDAY WHICH
WILL LOWER HEAT INDICES AND MAKE CONDITIONS FEEL MORE
COMFORTABLE.
- PRECIPITATION CHANCES INCREASE SUNDAY INTO EARLY NEXT WEEK, AS
AN AREA OF LOW PRESSURE MOVES INTO THE NORTHEASTERN GULF.
DISCUSSION
(THIS AFTERNOON THROUGH NEXT TUESDAY)
ISSUED AT 1256 PM CDT WED SEP 16 2026
AN UPPER RIDGE IS CENTERED OVER THE SOUTHERN APPALACHIANS THIS
AFTERNOON WITH THE LOCAL AREA ON THE SOUTHWESTERN EDGE. A SURFACE
RIDGE CENTERED OFF THE MID-ATLANTIC COAST. DEEPER MOISTURE IS
BEING PULLED NORTH FROM THE GULF INTO AND ACROSS THE LOCAL AREA,
HOWEVER PWATS ARE HIGHEST ALONG THE COAST AND OFFSHORE WITH VALUES
AT 2" AND HIGHER. LESSER AMOUNTS ARE FARTHER INLAND. WITH THE
MOISTURE GRADIENT IN PLACE AND THE AREA UNDER THE EDGE OF THE
UPPER RIDGE, LOW END POPS WILL CONTINUE ALONG THE COAST AND
OFFSHORE, HOWEVER MOSTLY HOT AND DRY CONDITONS ARE EXPECTED INLAND
OUTSIDE OF ONE OR TWO AFTERNOON SHOWERS.
LOWER PWATS WILL ADVECT IN FROM THE EAST THURSDAY AND FRIDAY
AROUND THE SOUTHERN EDGE OF THE UPPER RIDGE AND FROM THE SE AND
MID-ATLANTIC STATES. PWATS ARE FORECAST TO FALL TO AROUND 1"
THURSDAY NIGHT INTO EARLY FRIDAY. WHILE HIGH TEMPERATURES WILL
STILL BE AT OR ABOVE CLIMO NORMS, LOWER DEWPOINTS THAT ADVECT IN
DURING THE PERIOD WILL LOWER THE HEAT INDEX VALUES AND MORNING
LOWS WILL FALL INTO THE UPPER 60S TO LOW 70S AT SOME INLAND
AREAS.
THE UPPER RIDGE WILL RETROGRADE DURING THE WEEKEND AND GRADUALLY
WEAKEN INTO EARLY NEXT WEEK. RAIN CHANCES MAY RETURN BY MONDAY.
AVIATION
(18Z TAFS)
ISSUED AT 1256 PM CDT WED SEP 16 2026
A FEW SHOWERS AND STORMS WILL BE POSSIBLE THROUGH THE AFTERNOON
ALONG THE COAST, HOWEVER COVERAGE IS LOW. A DRIER AIRMASS WILL
FILTER IN FOR THURSDAY. MOSTLY VFR CONDITIONS ARE ANTICIPATED
ALONG WITH NORTHEAST TO SOUTHEAST WINDS.
MARINE
ISSUED AT 1256 PM CDT WED SEP 16 2026
A FAIRLY TIGHT PRESSURE GRADIENT WILL KEEP EASTERLY WINDS ELEVATED
THROUGH THURSDAY. WINDS WILL SLOWLY DECREASE FRIDAY INTO THE
WEEKEND AS HIGH PRESSURE MOVES OFF THE ATLANTIC COAST.
FIRE WEATHER
ISSUED AT 1256 PM CDT WED SEP 16 2026
DEWPOINTS WILL LOWER INTO THURSDAY AND FRIDAY AS A DRIER AIRMASS
FILTERS IN. RELATIVE HUMIDITY VALUES MAY FALL INTO THE 30S ACROSS
INTERIOR AREAS THROUGH SATURDAY.
LCH WATCHES/WARNINGS/ADVISORIES
LA...NONE.
TX...NONE.
GM...SMALL CRAFT ADVISORY UNTIL 7 PM CDT THURSDAY FOR GMZ450-452-455-
470-472-475.
PUBLIC/FIRE/MARINE...05
AVIATION...05
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