326
FXUS64 KJAN 032340
AFDJAN
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSON MS
640 PM CDT FRI JUL 3 2026
..NEW AVIATION
KEY MESSAGES
- DANGEROUS LEVELS OF HEAT STRESS WILL CONTINUE INTO THE WEEKEND.
DISCUSSION
ISSUED AT 150 PM CDT FRI JUL 3 2026
A HOT AND HUMID AIRMASS WILL REMAIN OVER THE FORECAST AREA AS WE
GO THROUGH THE 4TH OF JULY WEEKEND. WHILE THE RECENT HEAT STRESS
IS ON THE HIGHER END OF THE NORMAL RANGE, VALUES HAVE TRENDED
DOWNWARD SOME, AND THIS MAKES THE CURRENT HEAT STRESS EVENT A
LITTLE MORE MARGINAL. GIVEN IT IS A HOLIDAY WEEKEND WITH A PEAK
IN OUTDOOR ACTIVITIES AND GATHERINGS, WE'RE BEING A LITTLE MORE
AGGRESSIVE WITH THE MESSAGING, AND A HEAT ADVISORY HAS BEEN
EXPANDED TO INCLUDE THE ENTIRE AREA THROUGH THE 4TH. THEREAFTER, A
MORE DEFINITE WEAKNESS WILL DEVELOP IN THE SUBTROPICAL RIDGE, AND
THIS WILL SUPPORT GREATER COVERAGE OF CONVECTIVE RAINFALL
COVERAGE WITH EARLIER ONSET IN THE DIURNAL CYCLE. BECAUSE OF THIS,
PEAK HEAT INDICES AND DURATION BECOME A LITTLE MORE QUESTIONABLE
IN TERMS OF MEETING HEAT ADVISORY THRESHOLDS, SO WILL HOLD OFF ON
GOING FURTHER OUT. OVERALL, A TYPICAL ACTIVE JULY CONVECTIVE
REGIME IS EXPECTED ALONG WITH SEASONABLY HOT AND HUMID CONDITIONS
AS WE END THE WEEKEND AND GO THROUGH EARLY TO MID NEXT WEEK.
ADDITIONAL HEAT RELATED GRAPHICS FOR LIMITED/ELEVATED HEAT THREATS
MAY EVENTUALLY BECOME NECESSARY AS WE GET CLOSER IN TIME. /EC/
AVIATION
(00Z TAFS)
ISSUED AT 637 PM CDT FRI JUL 3 2026
VFR CONDITIONS WILL PREVAIL WITH FEW TO SCATTERED MIDLEVEL CLOUDS
AND LIGHT AND VARIABLE WINDS. ISOLATED TO SCATTERED CONVECTION IS
POSSIBLE TOMORROW. CONFIDENCE IS OVERALL TOO LOW TO INCLUDE IN
THE TAF, BUT SOMEWHAT GREATER CONFIDENCE AT GLH, SO INCLUDED
PROB30 GROUP. /SAS/
PRELIMINARY POINT TEMPS/POPS
JACKSON 76 93 75 91 / 0 30 30 70
MERIDIAN 75 96 75 93 / 0 20 10 70
VICKSBURG 77 93 76 92 / 0 30 20 70
HATTIESBURG 75 95 75 93 / 10 20 10 70
NATCHEZ 76 94 75 92 / 0 40 20 80
GREENVILLE 77 94 76 93 / 0 20 30 50
GREENWOOD 76 95 75 94 / 10 50 20 60
JAN WATCHES/WARNINGS/ADVISORIES
MS...HEAT ADVISORY UNTIL 8 PM CDT SATURDAY FOR MSZ018-019-025>066-
072>074.
LA...HEAT ADVISORY UNTIL 8 PM CDT SATURDAY FOR LAZ007>009-015-016-
023>026.
AR...HEAT ADVISORY UNTIL 8 PM CDT SATURDAY FOR ARZ074-075.
EC/EC/SAS20
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