682
FXUS64 KJAN 271436
AFDJAN
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSON MS
936 AM CDT SAT JUN 27 2026
..NEW MESOSCALE UPDATE
KEY MESSAGES
- DANGEROUS HEAT STRESS INTENSIFIES AREAWIDE THIS WEEKEND THROUGH
THE MIDDLE OF NEXT WEEK.
MESOSCALE UPDATE
ISSUED AT 936 AM CDT SAT JUN 27 2026
HOT AND HUMID CONDITIONS WILL PREVAIL ACROSS OUR FORECAST AREA THIS
MORNING THANKS TO THE HIGH PRESSURE SYSTEM OVER THE SOUTHEAST CONUS.
CLOUD COVER WILL BEGIN TO GRADUALLY DECREASE FROM THE WEST AS WE
HEAD INTO THE AFTERNOON. AFTERNOON HIGHS WILL PEAK INTO THE 90S
ACROSS THE AREA. THIS COMBINED WITH DEWPOINTS IN THE 70S WILL ALLOW
FOR HEAT INDICES TO CLIMB INTO THE TRIPLE DIGITS THIS AFTERNOON. AT
THIS TIME, NO CHANGES HAVE BEEN MADE TO THE HEAT GRAPHIC FOR TODAY
AND A "LIMITED" THREAT FOR DANGEROUS HEAT STRESS WILL CONTINUED TO
BE ADVERTISED FOR OUR WHOLE AREA. /CR/
DISCUSSION
ISSUED AT 232 AM CDT SAT JUN 27 2026
TODAY THROUGH NEXT FRIDAY...HIGH PRESSURE AT BOTH THE SURFACE AND
ALOFT WILL KEEP A GRIP ON OUR FORECAST AREA THIS WEEKEND AND INTO
NEXT WEEK. WHILE THIS WILL PROVIDE SOME OPPORTUNITY FOR THE CWA TO
DRY OUT AFTER A PRETTY WET STRETCH OF WEATHER, IT'LL UNFORTUNATELY
BRING ABOUT A PRETTY HOT AND HUMID STRETCH OF WEATHER ACROSS THE
REGION. CURRENTLY, THE NEXT BEST CHANCE FOR RAIN DOESN'T COME UNTIL
TUESDAY, AND CONTINUING INTO FRIDAY, AS DISTURBANCES CAUGHT UP IN
EASTERLY FLOW ALOFT AFFECT THE FORECAST AREA.
IN THE MEANTIME, INCREASING HEAT STRESS WILL BE THE BIGGER STORY
DURING THIS FORECAST STRETCH. EACH AFTERNOON, HIGHS WILL WARM INTO
THE LOW AND MIDDLE 90S, EXCEPT MID AND UPPER 90S MONDAY AND TUESDAY.
THIS, COUPLED WITH DEW POINTS IN THE 70S, WILL YIELD AFTERNOON HEAT
INDEX VALUES AT AND ABOVE THE CENTURY MARK THROUGHOUT THE FORECAST
PERIOD. AT THE MOMENT, MONDAY AND TUESDAY'S HEAT INDICES LOOK THEIR
HIGHEST AS VALUES COULD REACH UP TO AROUND 110F. HOWEVER ON
TUESDAY, AND CONTINUING THROUGH FRIDAY, INCREASED RAIN CHANCES EACH
AFTERNOON DURING THIS TIME COULD HAVE AN AFFECT ON JUST HOW HIGH
HEAT INDEX READINGS GET. I'LL CONTINUE TO ADVERTISE THESE DANGEROUS
HEAT STRESS CONDITIONS IN THE HWO INTO NEXT WEEK. WE WILL ALSO
EVALUATE ON A DAILY BASIS WHETHER OR NOT, AT A MINIMUM, A "HEAT
ADVISORY" IS NEEDED FOR PORTIONS OF THE FORECAST AREA. /19/
AVIATION
(12Z TAFS)
ISSUED AT 608 AM CDT SAT JUN 27 2026
VFR CONDITIONS ARE EXPECTED TO PREVAIL AT THE TAF SITES THROUGH
THE PERIOD. /NF/
PRELIMINARY POINT TEMPS/POPS
JACKSON 93 75 93 75 / 0 0 0 0
MERIDIAN 93 75 94 74 / 0 0 0 0
VICKSBURG 92 75 93 75 / 0 0 0 0
HATTIESBURG 95 75 96 75 / 0 0 0 0
NATCHEZ 93 75 94 75 / 0 0 0 0
GREENVILLE 91 76 92 76 / 0 0 0 0
GREENWOOD 93 76 94 75 / 0 0 0 0
JAN WATCHES/WARNINGS/ADVISORIES
MS...NONE.
LA...NONE.
AR...NONE.
06/19
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