955
FXUS64 KLCH 091727
AFDLCH
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
1227 PM CDT SUN AUG 9 2026
..NEW DISCUSSION, AVIATION, MARINE, FIRE WEATHER
KEY MESSAGES
- TYPICAL SUMMER WEATHER FOR THE WEEKEND WITH HOT AND HUMID CONDITIONS
ALONG WITH HIT OR MISS MAINLY AFTERNOON THUNDERSTORMS.
- A WEAK DISTURBANCE WILL MOVE ACROSS ON MONDAY WITH A PROBABILITY
OF MORE WIDESPREAD SHOWERS AND THUNDERSTORMS.
- LOWER RAIN CHANCES ARE EXPECTED TOWARD THE MIDDLE TO END OF NEXT WEEK
ALONG WITH AN INCREASE IN HEAT RISK AS AN UPPER LEVEL HIGH
BUILDS ACROSS THE REGION.
DISCUSSION
(THIS EVENING THROUGH NEXT SATURDAY)
ISSUED AT 1223 PM CDT SUN AUG 9 2026
AREA RADAR SHOWS SCATTERED SHOWERS AND STORMS ARE ONCE AGAIN ONGOING
EARLY THIS AFTERNOON, MAINLY ALONG AND SOUTH OF THE I-10 CORRIDOR AT
THIS TIME. EXPECT COVERAGE TO GRADUALLY INCREASE THROUGH THE NEXT
COUPLE OF HOURS AS WE APPROACH PEAK DAYTIME HEATING HOURS AND THE
SEABREEZE PUSHES INLAND. WITH AMPLE MOISTURE AVAILABLE (PWATS NEAR
THE 90TH PERCENTILE), SOME OF THESE STORMS WILL BE CAPABLE OF
PRODUCING LOCALIZED TORRENTIAL DOWNPOURS, WHICH COULD LEAD TO SOME
FLOODING ISSUES IN URBAN AND POOR DRAINAGE AREAS. OTHERWISE, JUST
ANOTHER RUN OF THE MILL SUMMERTIME AFTERNOON EXPECTED, WITH HIGHS
REACHING INTO THE LOW TO MID 90S.
TOMORROW, THE FORECAST AREA REMAINS SITUATED BENEATH A WEAKNESS
ALOFT FOR A BIT LONGER AS THE WEST CONUS UPPER RIDGE BEGINS TO
GRADUALLY BREAK DOWN. THIS WILL ALLOW FOR A COASTAL TROUGH AND A
PLUME OF DEEPER TROPICAL MOISTURE TO SHIFT NORTH ACROSS THE TX
COAST/WESTERN GULF THROUGH TOMORROW. THEREFORE, A MORE SCATTERED TO
WIDESPREAD COVERAGE OF SHOWERS AND STORMS IS EXPECTED TOMORROW,
BEGINNING EARLIER IN THE DAY AND CONTINUING THROUGH THE AFTERNOON
AND THE TROUGH MOVES ALONG THE GULF COAST. LIKE TODAY, SOME OF THESE
STORMS WILL BE CAPABLE OF PRODUCING LOCALIZED HEAVY DOWNPOURS,
POTENTIALLY LEADING TO MINOR FLOODING ISSUES.
TUESDAY AND BEYOND, THE WEST CONUS UPPER RIDGE WEAKENS FURTHER AND
EVENTUALLY DISSIPATES, WHILE THE SUB-TROPICAL RIDGE OVER THE W
ATLANTIC BEGINS TO SHIFT WESTWARD IN RESPONSE. ATLANTIC UPPER
RIDGING EVENTUALLY BECOMES ANCHORED ACROSS THE SOUTHEASTERN
CONUS/GULF AREA, STRENGTHENING OVERHEAD THROUGH THE LATER HALF OF
THE WEEK INTO NEXT WEEKEND. THIS WILL ALLOW FOR OUR DAILY CHANCE OF
AFTERNOON SHOWERS AND STORMS TO GRADUALLY DECREASE EACH DAY, WITH
MINOR CHANCES ON TUES/WED RETURNING TO A NEAR ZERO CHANCE BY
THURSDAY AND BEYOND. IN ADDITION, TEMPERATURES START TO CREEP BACK
UP INTO THE MID TO UPPER 90S BY THE LATER HALF OF THE WORK WEEK,
WHILE HEAT INDICES RETURN TO THE MID TO UPPER 100S, APPROACHING AND
POSSIBLY EXCEEDING HEAT ADVISORY CRITERIA BY THE END OF THE WORK
WEEK.
AVIATION
(18Z TAFS)
ISSUED AT 1223 PM CDT SUN AUG 9 2026
SCATTERED SHOWERS AND STORMS WILL CONTINUE TO DEVELOP AND SPREAD
INLAND THROUGH THE AFTERNOON, MAINLY AFFECTING THE COASTAL SITES.
AS THESE STORMS PASS OVERHEAD THEY WILL BE CAPABLE OF REDUCING
VIS/CIGS ALONG WITH PROVIDING GUSTY WINDS AND FREQUENT LIGHTNING.
AWAY FROM CONVECTION, VFR CONDITIONS WITH LIGHT WINDS PREVAIL.
CONVECTION TAPERS OFF OVERNIGHT BUT WILL REDEVELOP A BIT EARLIER
TOMORROW MORNING THAN TYPICAL AS A COASTAL TROUGH MOVES TOWARDS
THE REGION.
MARINE
ISSUED AT 1223 PM CDT SUN AUG 9 2026
MAINLY LIGHT SOUTH TO SOUTHEASTERLY WINDS WITH LOW SEAS ARE EXPECTED
TO CONTINUE INTO AT LEAST THE MIDDLE OF NEXT WEEK AS A SURFACE HIGH
PRESSURE SYSTEM RIDGES ACROSS THE NORTHERN GULF. THERE WILL BE A
DAILY CHANCE FOR SHOWERS AND THUNDERSTORMS THROUGH TUES AS A WEAK
COASTAL TROUGH SKIRTS ALONG THE NORTHERN GULF WATERS. THE BEST
CHANCE OF SEEING ACTIVITY IS FAVORED CLOSER TO SHORE DURING THE
AFTERNOON HOURS. DRY CONDITIONS RETURN WEDNESDAY AND BEYOND.
FIRE WEATHER
ISSUED AT 1223 PM CDT SUN AUG 9 2026
HIT OR MISS SHOWERS AND THUNDERSTORMS ARE AGAIN ONGOING THIS
AFTERNOON AND WILL CONTINUE INTO THE EVENING HOURS. WIDESPREAD
SIGNIFICANT RAINFALL IS NOT EXPECTED AND THIS WILL LIKELY ALLOW THE
OVERALL ANTECEDENT CONDITIONS TO BECOME DRIER WITH AN INCREASE IN
THE KBDI. WITH LOW LEVEL GULF MOISTURE FROM MAINLY SOUTHERLY WINDS,
MINIMUM AFTERNOON RELATIVE HUMIDITY VALUES ARE EXPECTED TO RANGE
FROM 50 TO 60 PERCENT. A BRIEF SURGE IN MOISTURE AND A WEAK
DISTURBANCE WILL BRING THE POSSIBILITY OF WIDESPREAD RAINFALL ON
MONDAY WITH MINIMUM AFTERNOON RELATIVE HUMIDITY VALUES IN THE 60 TO
70 PERCENT RANGE. CONDITIONS LOOK TO DRY OUT LATE TUESDAY THROUGH
THE REST OF THE FORECAST PERIOD.
LCH WATCHES/WARNINGS/ADVISORIES
LA...NONE.
TX...NONE.
GM...NONE.
PUBLIC/FIRE/MARINE...17
AVIATION...17
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