618
FXUS64 KLCH 031732
AFDLCH
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
1232 PM CDT MON AUG 3 2026
..NEW DISCUSSION, AVIATION, MARINE, FIRE WEATHER
KEY MESSAGES
- DEWPOINTS WILL BEGIN TO RISE THROUGH THE WORK WEEK, WHILE BOTH
HIGH AND LOW TEMPERATURES ARE FORECAST TO REMAIN AT OR SLIGHTLY
ABOVE AVERAGE.
-ISOLATED DIURNALLY DRIVEN AFTERNOON THUNDERSTORMS WILL BE
POSSIBLE EACH DAY THROUGH THE WORK WEEK, WITH RAIN CHANCES IN THE
15 TO 30% RANGE.
DISCUSSION
(THIS EVENING THROUGH NEXT SUNDAY)
ISSUED AT 1229 PM CDT MON AUG 3 2026
YESTERDAY'S WEAK BOUNDARY REMAINS DRAPED ALONG THE I-10 CORRIDOR
THIS AFTERNOON, PROVIDING LIGHT AND VARIABLE WINDS ACROSS THE
FORECAST AREA. THE BOUNDARY WILL CONTINUE ITS SLOW MEANDER NORTH
TOWARDS THE ARK-LA-MISS THROUGH THE EARLY WORK WEEK, ALLOWING
ONSHORE FLOW TO EVENTUALLY BECOME RE-ESTABLISHED ONCE AGAIN. THIS
WILL ALLOW FOR A SLOW BUT STEADY INCREASE IN MOISTURE THROUGH THE
NEXT COUPLE OF DAYS, WITH PWATS EXPECTED TO RETURN TO NEAR THE
50TH PERCENTILE (~1.80" ACCORDING TO SPC CLIMO) BY WEDNESDAY.
ALOFT, TROUGHING OVER THE E CONUS WILL GRADUALLY LIFT NORTH TODAY,
LEAVING BEHIND A WEAK CUTOFF LOW OVER THE SE CONUS. THIS LOW WILL
LINGER NEARBY INTO WEDNESDAY, PREVENTING UPPER RIDGING FROM
TAKING HOLD FOR A WHILE LONGER. WITH SOME ADDITIONAL UPPER LEVEL
SUPPORT NEARBY, A SLIGHT INCREASE IN AFTERNOON RAIN CHANCES IS
EXPECTED TOMORROW AND WED, ESPECIALLY ACROSS THE EASTERN PARTS OF
THE CWA CLOSER TO THE INFLUENCE OF THE UPPER LOW.
BY THURSDAY THE UPPER LOW WILL BE FULLY DISSIPATED, WITH UPPER
RIDGING OVER BOTH THE FOUR CORNERS REGION AND THE WESTERN ATLANTIC
BEGINNING TO STRENGTHEN TO OUR WEST AND EAST SIMULTANEOUSLY. STILL,
AT THIS POINT GUIDANCE IS IN GOOD AGREEMENT THAT THESE TWO RIDGES
WON'T QUITE REACH EACH OTHER UNTIL POSSIBLY BEYOND THE END OF THIS
FORECAST PERIOD, LEAVING A SMALL WEAKNESS BETWEEN THEM OVERHEAD
THROUGH NEXT WEEKEND. AT THE SURFACE, A WELL ESTABLISHED ONSHORE
FLOW AROUND A SE CONUS SURFACE HIGH WILL ALLOW FOR EVEN BETTER
MOISTURE RETURN THROUGH THIS SAME PERIOD, WITH PWATS INCREASING
INTO/ABOVE THE 75TH PERCENTILE RANGE. WITH DECENT MOISTURE AVAILABLE
AND A SLIGHT WEAKNESS ALOFT, THE CHANCE FOR AFTERNOON SHOWERS AND
STORMS WILL INCREASE A BIT FURTHER EACH DAY THURS THROUGH SUN.
AVIATION
(18Z TAFS)
ISSUED AT 1229 PM CDT MON AUG 3 2026
SCATTERED TO BROKEN CLOUD DECK NEAR 5000 FT WILL CONTINUE TO
STREAM ACROSS THE REGION INTO THIS EVENING, THINKING
OUT/DISSIPATING OVERNIGHT. LIGHT AND VARIABLE WINDS NEAR 0-5KTS
WILL CONTINUE AT ALL SITES THROUGH THE PERIOD.
MARINE
ISSUED AT 1229 PM CDT MON AUG 3 2026
A LIGHT WEST TO SOUTHWEST FLOW WILL CONTINUE THROUGH THE NEXT COUPLE
OF DAYS, BECOMING MORE SOUTHERLY BY LATE TUESDAY AND BEYOND. A FEW
ISOLATED SHOWERS WILL BE POSSIBLE LATER IN THE PERIOD, BUT OVERALL
MOSTLY DRY CONDITIONS ARE EXPECTED THROUGH THE WORK WEEK.
FIRE WEATHER
ISSUED AT 1229 PM CDT MON AUG 3 2026
MINIMUM AFTERNOON RH VALUES ARE EXPECTED TO RANGE FROM 35 TO 55
PERCENT ONCE AGAIN TODAY, AMID A LIGHT AND VARIABLE ONSHORE FLOW.
MOISTURE BEGINS TO SLOWLY RETURN TODAY THROUGH THE MID-WEEK,
ALLOWING MIN RH VALUES TO RETURN TO THE 50-60% RANGE EACH DAY.
INCREASING MOISTURE WILL BRING BACK A CHANCE FOR ISOLATED AFTERNOON
THUNDERSTORMS AGAIN TUESDAY AND BEYOND.
LCH WATCHES/WARNINGS/ADVISORIES
LA...NONE.
TX...NONE.
GM...NONE.
PUBLIC/FIRE/MARINE...17
AVIATION...17
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