279
FXUS64 KLIX 212326 AAA
AFDLIX
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE NEW ORLEANS LA
626 PM CDT FRI AUG 21 2026
..NEW AVIATION
KEY MESSAGES
UPDATED AT 619 PM CDT FRI AUG 21 2026
- DANGEROUS HEAT CONTINUES WITH AFTERNOON HEAT INDICES IN THE
105-113 DEGREE RANGE THROUGH THE WEEKEND. WARM OVERNIGHT
TEMPERATURES WILL OFFER LIMITED RELIEF.
- ISOLATED TO SCATTERED AFTERNOON STORMS ARE EXPECTED THE NEXT
COUPLE DAYS WITH A LITTLE BETTER COVERAGE THIS AFTERNOON AND
EVENING.
SHORT TERM
(NOW THROUGH MONDAY NIGHT)
ISSUED AT 1224 PM CDT FRI AUG 21 2026
TONIGHT THROUGH THE WEEKEND, UPPER LEVEL RIDGING WILL
REMAIN IN PLACE OVER THE AREA. SOUTHERLY SURFACE WINDS WILL CONTINUE
TO HELP ADVECT WARM AIR AND MOISTURE INTO THE AREA, INCREASING THE
HUMIDITY. SCATTERED SHOWERS AND STORMS WILL BE EXPECTED DAILY DURING
THE AFTERNOON AND EARLY EVENING. THESE STORMS WILL HAVE THE
POTENTIAL FOR FREQUENT LIGHTNING AND GUSTY SUBSEVERE WINDS (40-
50MPH). THESE STORMS ARE NOT EXPECTED TO BE SEVERE.
THE HEAT CONTINUES. HIGHS IN THE MID TO UPPER 90S COMBINED WITH HEAT
INDEX VALUES IN THE 103-110 DEGREES RANGE WILL BE QUITE WARM. HEAT
ADVISORIES ARE IN EFFECT FOR SATURDAY AND WILL LIKELY BE NEEDED
SUNDAY. BE SURE TO STAY HYDRATED AND TAKE FREQUENT BREAKS IF YOU
WILL BE SPENDING TIME OUTDOORS. MSW
LONG TERM
(TUESDAY THROUGH THURSDAY NIGHT)
ISSUED AT 1224 PM CDT FRI AUG 21 2026
HIGH PRESSURE CONTINUES TO BUILD OVER THE AREA FOR THE
WORKWEEK. SOUTHERLY SURFACE WINDS WILL CONTINUE TO ADVECT WARM AND
MOIST AIR INTO THE REGION, INCREASING HUMIDITIES FOR THE AREA.
CONDITIONS WILL BE QUITE DRY OVERALL FOR THE BEGINNING OF NEXT WEEK
WITH POPS LESS THAN 10-20% FOR THE LONG TERM FORECAST. AN ISOLATED
SHOWER/STORM WILL BE POSSIBLE DAILY DURING PEAK HEATING HOURS IN THE
AFTERNOON/EVENING. THE MAIN RISK WITH THESE STORMS WHERE THEY OCCUR
WOULD BE FREQUENT LIGHTNING AND GUSTY WINDS (30-50MPH). THE HEAT
WILL CONTINUE AS WELL WITH HIGHS IN THE MID TO UPPER 90S AND HEAT
INDEX VALUES IN THE 105-110 DEGREE RANGE. SO, BE SURE TO STAY
HYDRATED AND TAKE FREQUENT BREAKS IF SPENDING TIME OUTDOORS. MSW
AVIATION
(00Z TAFS)
ISSUED AT 626 PM CDT FRI AUG 21 2026
CONVECTION IS ONGOING ACROSS THE REGION THIS EVENING. COVERED MOST
TERMINALS WITH THUNDER OUTSIDE OF MCB AND GPT WHERE THUNDER
CHANCES ARE LOWEST. ELSEWHERE, HUM WILL HANG ON TO CONVECTIVE
POTENTIAL A BIT LONGER, BUT ALL SITES SHOULD BE CLEARED PRIOR TO
05Z. CONVECTION HAS BEEN VERY GUSTY THIS EVENING. THESE GUSTS WILL
BE VARIABLE, BUT SHOULD DECREASE AS CONVECTION CONTINUES TO DECAY
ACROSS THE REGION. OTHERWISE, LATER TONIGHT MOSTLY VFR CONDITIONS
ARE EXPECTED AND SHOULD CONTINUE THROUGH THE REST OF THE PERIOD
OUTSIDE OF POTENTIAL LOWER VIS FOR MCB AFTER SOME SOAKING RAINS.
(FRYE)
MARINE
ISSUED AT 1224 PM CDT FRI AUG 21 2026
SURFACE HIGH PRESSURE CENTERED OVER THE CENTRAL GULF WILL
MAINTAIN A GENERALLY WEAK PRESSURE GRADIENT THROUGH MUCH OF THE
PERIOD. A PREDOMINANTLY WESTERLY FLOW WILL CONTINUE, WITH HIGHER
WINDS DURING THE EARLY MORNING AND LATE NIGHT HOURS. ISOLATED TO
SCATTERED THUNDERSTORMS WILL REMAIN POSSIBLE WITH WINDS AND WAVES
HIGHER IN AND NEAR THIS ACTIVITY.
LIX WATCHES/WARNINGS/ADVISORIES
LA...EXTREME HEAT WARNING UNTIL 8 PM CDT THIS EVENING FOR LAZ034>037-
039-046>048-056>058-064-070-071-076>087-089>100.
HEAT ADVISORY FROM 11 AM TO 8 PM CDT SATURDAY FOR LAZ034>037-039-
046>048-056>058-064-070-071-076>087-089>100.
GM...NONE.
MS...EXTREME HEAT WARNING UNTIL 8 PM CDT THIS EVENING FOR MSZ068>071-
077-083>088.
HEAT ADVISORY FROM 11 AM TO 8 PM CDT SATURDAY FOR MSZ068>071-077-
083>088.
GM...NONE.
SHORT TERM...MSW
LONG TERM....MSW
AVIATION...RDF
MARINE...MSW
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