276
FXUS64 KJAN 290527 AAA
AFDJAN
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE JACKSON MS
1227 AM CDT WED JUL 29 2026
..NEW AVIATION
KEY MESSAGES
- DANGEROUS HEAT STRESS WILL PERSIST INTO WEDNESDAY.
- INCREASING RAIN CHANCES WILL BEGIN TO LIMIT HEAT STRESS
POTENTIAL LATER IN THE WEEK, ESPECIALLY ACROSS NORTH MISSISSIPPI
AND ARKANSAS.
DISCUSSION
ISSUED AT 221 PM CDT TUE JUL 28 2026
TUESDAY NIGHT THROUGH NEXT MONDAY:
ANOTHER DAY OF HOT/HUMID CONDITIONS AS WE REMAIN ON THE EDGE OF THE
HIGH PRESSURE SITTING OUT NEAR THE DESERT SOUTHWEST. A FRONTAL
BOUNDARY WILL ALSO BEGIN TO SLIDE DOWN, PROVIDING A SLIGHT RELIEF
FROM HUMIDITY IN NORTHEAST COUNTIES, HOWEVER TEMPS WILL REMAIN IN
THE MID/UPPER 90S TO NEAR 100 DEGREES WITH AREAWIDE HEAT INDICES
ABOVE 105 F, WITH SOME AREAS REACHING INDICES IN THE 110-115F RANGE.
A HEAT ADVISORY AND EXTREME HEAT WARNING WILL BE IN EFFECT AGAIN
WEDNESDAY GIVEN THERE ISN'T MUCH CHANGE IN THE CURRENT SCENARIO.
WITH DAYTIME HEATING AND AN APPROACHING BOUNDARY, SHOWERS/STORMS
WILL BE POSSIBLE WEDNESDAY AFTERNOON, AND THIS COULD BRING AN
EARLIER END TO THE HEAT OVER NE COUNTIES, BUT IT WILL STILL BE
PLENTY HOT BEFORE THAT HAPPENS, AND SO WILL KEEP THIS AREA UNDER THE
HEAT ADVISORY FOR NOW. ONE THING WORTH MENTIONING FOR WEDNESDAY -
NOTHING IS OUTLOOKED FOR OUR CWA AT THIS TIME, HOWEVER, A MARGINAL
(1 OUT OF 5) RISK FOR SEVERE WEATHER IS OUTLOOKED NEAR MID AL, AND
THIS MAY EXPAND INTO OUR AREA DUE TO DECENT INSTABILITY IN PLACE.
THE BOUNDARY IS EXPECTED TO MAKE IT FARTHER SOUTH INTO OUR AREA AND
STALL THURSDAY, BUT THERE IS UNCERTAINTY IN HOW FAR SOUTH THE FRONT
MAKES IT.
AS THE HIGH PRESSURE RETREATS AND KEEPS NORTHWEST FLOW OVER THE
AREA, ANOTHER FRONTAL BOUNDARY WILL PUSH INTO THE AREA FROM THE LATE
FRIDAY INTO SATURDAY. THIS WILL KEEP RAIN CHANCES THROUGH THE
WEEKEND AND INTO NEXT WEEK AS THIS FRONT STALLS OVER THE AREA AS
WELL. /SW/
AVIATION
(06Z TAFS)
ISSUED AT 1222 AM CDT WED JUL 29 2026
VFR CONDITIONS AND A LIGHT WIND WL PREVAIL THROUGH THE TAF PERIOD
WITH THE EXCEPTION OF A FEW HOURS, 21-24Z ACROSS THE NORTHERN TAF
SITES DUE TO SHRA/TSRA. /22/
PRELIMINARY POINT TEMPS/POPS
JACKSON 76 93 73 93 / 40 60 10 50
MERIDIAN 75 93 72 93 / 40 60 10 40
VICKSBURG 77 93 75 93 / 30 60 10 40
HATTIESBURG 77 93 75 92 / 50 70 30 60
NATCHEZ 76 94 75 94 / 30 60 10 40
GREENVILLE 75 93 73 94 / 40 30 10 30
GREENWOOD 74 94 72 93 / 40 20 0 40
JAN WATCHES/WARNINGS/ADVISORIES
MS...HEAT ADVISORY FROM 10 AM THIS MORNING TO 9 PM CDT THIS EVENING
FOR MSZ028>033-037>039-044>046-050>052-056>058-060>066-
072>074.
EXTREME HEAT WARNING FROM 10 AM THIS MORNING TO 9 PM CDT THIS
EVENING FOR MSZ018-019-025>027-034>036-040>043-047>049-
053>055-059.
LA...HEAT ADVISORY FROM 10 AM THIS MORNING TO 9 PM CDT THIS EVENING
FOR LAZ007>009-015-016-023>026.
AR...HEAT ADVISORY FROM 10 AM THIS MORNING TO 9 PM CDT THIS EVENING
FOR ARZ074-075.
SW/22
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