357
FXUS64 KJAN 231747
AFDJAN
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSON MS
1247 PM CDT SUN AUG 23 2026
..NEW DISCUSSION, AVIATION
KEY MESSAGES
- DANGEROUS HEAT STRESS IS EXPECTED ACROSS PORTIONS OF THE
FORECAST AREA OVER THE NEXT SEVERAL DAYS.
- ISOLATED SEVERE STORMS CAPABLE OF DAMAGING WIND GUSTS ARE
POSSIBLE ACROSS MAINLY SOUTHERN PORTIONS OF THE AREA TODAY
THROUGH TUESDAY.
DISCUSSION
ISSUED AT 1243 PM CDT SUN AUG 23 2026
THIS AFTERNOON THROUGH TONIGHT:
HOT/HUMID CONDITIONS WILL BE ONGOING THROUGH THE AFTERNOON.
DANGEROUS HEAT CONDITIONS IS EXPECTED WITH GREATEST HEAT STRESS OVER
WESTERN/SOUTHERN AREAS WHERE HEAT INDICES REACH 110 DEGREES ARE
EXPECTED. HEAT ADVISORY WILL REMAIN IN EFFECT THROUGH 8PM. A WEAK,
FRONTAL BOUNDARY WILL PROVIDE THE NEXT STORM CHANCES ALONG THE HWY
84 CORRIDOR THROUGH THE EVENING HOURS. A "MARGINAL" (1/5) RISK FOR
SEVERE WEATHER WITH DAMAGING WINDS AS THE PRIMARY HAZARD.
MONDAY THROUGH SATURDAY:
AS THE BOUNDARY PROGRESS SOUTHWARD, A ROUND OF ELEVATED CONVECTION
WILL BRING MONDAY PRE-DAWN RAIN CHANCES TO THE DELTA AND CENTRAL
MS. AFTERNOON TEMPS WILL BRIEFLY "COOL" TEMPS TO THE LOW/MID 90S
WITH HEAT INDICES NEAR 105. "ALTHOUGH TEMPS WILL BE IN THE LOW/MID
90S, A "LIMITED" (1/4) RISK FOR HEAT STRESS IS EXPECTED. AN
ADDITIONAL "SLIGHT" (2/5) RISK FOR SEVERE WEATHER IS EXPECTED FOR
MONDAY AND "MARGINAL" (1/5) RISK TUESDAY AFTERNOON/EVENING THANKS
TO INCOMING WEAK DISTURBANCES. THE RISK AREA WILL GRADUALLY MOVE
NORTHWARD TOWARDS THE 1-20 CORRIDOR BY TUESDAY.
HIGH PRESSURE WILL RETROGRADE TOWARDS THE SOUTHWEST CONUS WITH A
TROUGH AXIS SETTING UP ACROSS THE SOUTHERN CONUS. AS A RESULT,
NORTHWEST FLOW ACROSS THE AREA WILL ALLOW THE DISTURBANCES TO
INCREASE AFTERNOON RAIN CHANCES THROUGH THE END OF THE WEEK.
ALTHOUGH RAIN CHANCES WILL BE PRESENT, HEAT WILL STILL BE A CONCERN
THROUGH THE WEEK. HEAT AND HUMIDITY WILL BE ON THE REBOUND AS HEAT
INDICES BEGIN TO INCREASE TO 110 DEGREES WEST OF I-55. HEAT
HEADLINES AND ADVISORIES WILL LIKELY BE NEEDED AS THE WEEK PROGRESS.
/SW/
AVIATION
(18Z TAFS)
ISSUED AT 1243 PM CDT SUN AUG 23 2026
VFR CONDITIONS ARE EXPECTED TO PREVAIL THROUGH THE TAF PERIOD,
HOWEVER BRIEF RESTRICTIONS TO VISIBILITY COULD OCCUR WITH ANY
SHOWERS OR STORMS NEAR KGLH, KGWO AFTER 12Z MONDAY. CONFIDENCE IN
THUNDER IMPACTS WAS GREATEST TO MENTION AT THOSE SITES. /NF/
PRELIMINARY POINT TEMPS/POPS
JACKSON 73 92 73 95 / 0 30 30 30
MERIDIAN 73 92 72 94 / 10 40 20 40
VICKSBURG 74 92 73 95 / 0 30 20 20
HATTIESBURG 74 95 73 95 / 10 60 20 40
NATCHEZ 75 96 75 97 / 10 20 10 10
GREENVILLE 73 91 72 97 / 10 30 40 20
GREENWOOD 72 89 71 94 / 10 30 40 40
JAN WATCHES/WARNINGS/ADVISORIES
MS...HEAT ADVISORY UNTIL 8 PM CDT THIS EVENING FOR MSZ018-019-025-
034>036-040>043-047>049-053>066-072>074.
LA...HEAT ADVISORY UNTIL 8 PM CDT THIS EVENING FOR LAZ007>009-015-016-
023>026.
AR...HEAT ADVISORY UNTIL 8 PM CDT THIS EVENING FOR ARZ074-075.
SW/NF
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