741
FXUS64 KLCH 070521
AFDLCH
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
1221 AM CDT FRI AUG 7 2026
..NEW DISCUSSION, AVIATION, MARINE, FIRE WEATHER
KEY MESSAGES
- A MAINLY TYPICAL SUMMER WEATHER PATTERN WILL PREVAIL INTO THE
WEEKEND.
- THERE WILL BE A CHANCE FOR DAILY MAINLY AFTERNOON SHOWERS OR
THUNDERSTORMS, HOWEVER WIDESPREAD SIGNIFICANT RAINFALL IS NOT
EXPECTED.
- MUGGY CONDITIONS WILL ALSO OCCUR WITH AFTERNOON HEAT INDEX
READINGS BETWEEN 100 AND 107 DEGREES.
- DUE TO HIGH HUMIDITY AND LOW WINDS, POCKETS OF PATCHY FOG ARE
POSSIBLE DURING THE LATE NIGHT AND EARLY MORNING.
DISCUSSION
(TODAY THROUGH THURSDAY)
ISSUED AT 1218 AM CDT FRI AUG 7 2026
OVERALL NO MAJOR CHANGES TO THE FORECAST OVER THE NEXT FEW DAYS
WHICH WILL BE A TYPICAL PATTERN FOR THIS TIME OF YEAR. A SURFACE
RIDGE EXTENDING FROM OFF THE SOUTHEAST US COAST ACROSS THE NORTHERN
GULF AND INTO THE FORECAST AREA WILL ALLOW FOR A MOIST LOW LEVEL
SOUTHERLY FLOW TO CONTINUE BRINGING IN HIGH HUMIDITY.
MEANWHILE, THE FORECAST AREA WILL CONTINUE ON THE PERIPHERY OF AN
UPPER LEVEL RIDGE CENTERED OVER THE SOUTHWEST US BRINGING A
NORTHEAST FLOW IN THE MID LEVELS. NO SIGNIFICANT DISTURBANCES ARE
SEEN MOVING OVER THE AREA IN THE NORTHEAST FLOW. HOWEVER, DAYTIME
HEATING AND SEA BREEZE, ALONG WITH OTHER MESO SCALE BOUNDARIES,
SHOULD BE ENOUGH TO GET CONVECTION GOING. ALTHOUGH WIDESPREAD
SIGNIFICANT RAINFALL IS NOT EXPECTED, SOME OF THE STORMS WILL BE
SLOW MOVERS WITH TORRENTIAL DOWNPOURS THAT MAY CAUSE SOME ISSUES IF
THEY OCCUR OVER URBAN POOR DRAINAGE AREAS.
TEMPERATURES ALSO LOOK NEAR NORMAL AS CONVECTIVE TEMPERATURES WILL
BE IN THE LOW 90S, SO DEVELOPING CLOUDS AND SHOWERS WILL HELP KEEP
AIR TEMPERATURES FROM BEING EXTREME AND ALSO KEEPING AFTERNOON MAX
HEAT INDEX VALUES FROM 100 TO 107 AND BELOW ANY HEAT HAZARDS.
NBM IS SHOWING AN INCREASE IN RAIN CHANCES FOR THE MONDAY INTO
TUESDAY TIMEFRAME AS THE UPPER LEVEL RIDGE OVER THE SOUTHWEST US
RETREATS TO THE WEST AND THE SUB-TROPICAL RIDGE OVER THE WESTERN
ATLANTIC BEGINS TO MOVE IN. THE EXPANDING OF THE SUB-TROPICAL RIDGE
WILL PUSH AN INVERTED TROUGH FEATURE INTO THE REGION EARLY NEXT
WEEK. ALSO, A MORE PRONOUNCED AND DEEPER SOUTHERLY FLOW WILL BRING
AN INCREASE IN MOISTURE THAT MAY HELP MORE WIDESPREAD SHOWER
ACTIVITY TO DEVELOP.
BY THE MIDDLE PART OF NEXT WEEK, RAIN CHANCES DECREASE AGAIN AS THE
UPPER LEVEL RIDGE BECOMES STRONGER AND BUILDS INTO THE FORECAST
AREA.
07/RUA
AVIATION
(06Z TAFS)
ISSUED AT 1218 AM CDT FRI AUG 7 2026
THE DAILY CONVECTION HAS DIMINISHED AND MAINLY STABLE CONDITIONS ARE
EXPECTED THROUGH THE NIGHT. MAINLY VFR CONDITIONS AT THE TERMINALS
UNTIL CLOSE TO SUNRISE WHEN SOME PATCHY FOG MAY ALLOW FOR MVFR
CONDITIONS.
ON FRIDAY, ANOTHER ROUND OF DAYTIME HEATING AND SEABREEZE ACTIVITY
IS EXPECTED AND WILL HAVE PROB30 GROUPS AT THE TERMINALS DURING THE
TIMEFRAME CONVECTION MAY AFFECT THEM.
07/RUA
MARINE
ISSUED AT 1218 AM CDT FRI AUG 7 2026
LIGHT TO OCCASIONALLY MODEST MAINLY SOUTHEASTERLY WINDS WITH LOW
SEAS WILL CONTINUE THROUGH THE WEEKEND INTO EARLY NEXT WEEK AS A
SURFACE HIGH PRESSURE SYSTEM RIDGES ACROSS THE NORTHERN GULF. THERE
WILL BE A DAILY CHANCE FOR SHOWERS AND THUNDERSTORMS WITH THE BEST
CHANCE CLOSER TO SHORE DURING THE AFTERNOON HOURS.
FIRE WEATHER
ISSUED AT 1218 AM CDT FRI AUG 7 2026
HIT OR MISS SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE MAINLY IN THE
AFTERNOON THROUGH THE WEEKEND. 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.
LCH WATCHES/WARNINGS/ADVISORIES
LA...NONE.
TX...NONE.
GM...NONE.
PUBLIC/FIRE/MARINE...07
AVIATION...07
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