740
FXUS64 KJAN 301903
AFDJAN
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSON MS
203 PM CDT THU JUL 30 2026
..NEW DISCUSSION
KEY MESSAGES
- HEAT STRESS WILL CONTINUE TO BE A CONCERN OVER MUCH OF THE AREA
TODAY AND FRIDAY.
DISCUSSION
ISSUED AT 147 PM CDT THU JUL 30 2026
THROUGH FRIDAY: UNFORTUNATELY, THE RELIEF FROM THE DANGEROUS HEAT
STRESS HAS BEEN DELAYED SOME, AND A HEAT ADVISORY HAS BEEN
EXTENDED THROUGH FRIDAY AND NOW INCLUDES THE ENTIRE AREA. THE
OPPRESSIVE HEAT HAS MAINTAINED TODAY OVER MOST OF THE AREA AS
BOUNDARY LAYER HUMIDITY IS PEAKING AT THE WORST TIME IN
ASSOCIATION WITH MOISTURE POOLING ASSOCIATED WITH A WEAK SURFACE
BOUNDARY OVER OUR AREA. HIGH DEWPOINTS COMBINED WITH TEMPERATURES
RISING WELL INTO THE 90S IS SENDING HEAT INDEX VALUES TO AROUND
110, BUT WILL SAY THAT SCATTERED CONVECTIVE PRECIPITATION WILL
HOPEFULLY HELP TO REDUCE SOME OF THE HEAT, OR AT LEAST KEEPING IT
FROM REACHING MORE DANGEROUS LEVELS, AS WE GO THROUGH THE
REMAINDER OF THE AFTERNOON. EXPECT A GENERAL REPEAT OF TODAY'S
WEATHER FOR FRIDAY WITH FAIRLY HIGH COVERAGE OF DIURNALLY DRIVEN
CONVECTION, AND HAVE MAINTAINED THE ELEVATED HEAT THREAT GRAHIC.
/EC/
SATURDAY ONWARDS: THE LONG-TERM FORECAST REMAINS ON TRACK.
INCREASED CHANCES FOR CONVECTIVE ACTIVITY AND CLOUD COVERAGE WILL
TAKE HOLD DUE TO THE SURFACE CONFLUENCE FROM THE AFOREMENTIONED
FRONT, WHICH COULD PROVIDE A FEW DEGREE DIP, THUS MITIGATING HEAT
THREAT CONCERNS. WITH UPPER FLOW BECOMING MORE NORTHERLY AND
NORTHWESTERLY DURING THIS TIME FRAME, WE WILL SEE THE POTENTIAL
FOR ONE OR TWO CONVECTIVE COMPLEXES MOVING INTO THE AREA OR
DEVELOPING OVER THE AREA. THIS WILL RESULT IN CONTINUED HIGHER
DIURNAL RAIN CHANCES HEADING INTO THE WEEKEND. GOING INTO EARLY
NEXT WEEK, CONDITIONS BECOME LESS FAVORABLE FOR CONVECTIVE
COVERAGE. IN TERMS OF SENSIBLE WEATHER, WE'LL SEE RAIN CHANCES
DIMINISH AND HEAT POTENTIALLY REBUILD SOME, BUT IT SHOULD REMAIN
BELOW WHAT WE'VE SEEN OVER THE LAST FEW DAYS. /OAJ/EC/
AVIATION
(18Z TAFS)
ISSUED AT 1239 PM CDT THU JUL 30 2026
VFR CONDITIONS PREVAIL WITH SCATTERED HIGH CLOUDS AND LIGHT
WESTERLY WINDS. ISOLATED TO SCATTERED STORMS ARE EXPECTED TO
PERSIST THROUGH THE AFTERNOON. AS OF 12:40 PM, +TSRA AT MEI. VCTS
IS LIKELY FOR ROUGHLY THE SOUTHERN HALF OF THE AREA. /SAS/
PRELIMINARY POINT TEMPS/POPS
JACKSON 75 93 75 93 / 30 60 20 20
MERIDIAN 74 91 74 91 / 30 70 40 50
VICKSBURG 75 94 76 93 / 30 40 20 20
HATTIESBURG 75 91 75 92 / 30 50 20 30
NATCHEZ 75 95 75 94 / 20 10 10 10
GREENVILLE 75 95 76 94 / 20 40 40 30
GREENWOOD 74 93 75 93 / 20 60 40 30
JAN WATCHES/WARNINGS/ADVISORIES
MS...HEAT ADVISORY UNTIL 7 PM CDT THIS EVENING FOR MSZ018-019-025-
034>036-040>044-047>051-053>066-072>074.
HEAT ADVISORY FROM 10 AM TO 7 PM CDT FRIDAY FOR MSZ018-019-
025>066-072>074.
LA...HEAT ADVISORY UNTIL 7 PM CDT THIS EVENING FOR LAZ007>009-015-016-
023>026.
HEAT ADVISORY FROM 10 AM TO 7 PM CDT FRIDAY FOR LAZ007>009-015-
016-023>026.
AR...HEAT ADVISORY UNTIL 7 PM CDT THIS EVENING FOR ARZ074-075.
HEAT ADVISORY FROM 10 AM TO 7 PM CDT FRIDAY FOR ARZ074-075.
EC/OAJ/SAS20
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