997
FXUS64 KJAN 081133
AFDJAN
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSON MS
633 AM CDT WED JUL 8 2026
..NEW AVIATION
KEY MESSAGES
- DANGEROUS LEVELS OF HEAT RETURNS LATE THIS WEEK AND PERSIST
INTO THE WEEKEND.
DISCUSSION
ISSUED AT 237 AM CDT WED JUL 8 2026
TODAY THROUGH NEXT TUESDAY...A MID/UPPER LEVEL TROUGH RESIDING ABOUT
THE REGION WILL GRADUALLY WEAKEN AND BECOME ABSORBED IN QUASI-ZONAL
FLOW ACROSS THE COUNTRY. THIS WILL ALLOW SUB-TROPICAL RIDGING TO
INCREASE ITS PRESENCE ACROSS THE LOWER MISSISSIPPI RIVER VALLEY LATE
THIS WEEK AND INTO THE UPCOMING WEEKEND. MEANWHILE AT THE SURFACE,
HIGH PRESSURE CENTERED TO THE SOUTHEAST OF THE CWA WILL MAINTAIN
SOUTHERLY FLOW ACROSS THE REGION, THUS KEEPING HUMID CONDITIONS
ACROSS THE AREA.
WITH THE PRESENCE OF THE TROUGH NEARBY TODAY AND THURSDAY, DECENT
CHANCES FOR DIURNALLY DRIVEN CONVECTION WILL REMAIN IN THE
FORECAST. CONVECTION WILL LINGER INTO THE EVENING HOURS, BEFORE
FINALLY DISSIPATING AS DAYTIME HEATING WANES. GUSTY WINDS, LOCALLY
HEAVY DOWNPOURS, AND FREQUENT LIGHTNING WILL BE POSSIBLE WITH THE
MOST INTENSE STORMS. AS THE AFOREMENTIONED SUB-TROPICAL HIGH BUILDS
IN FRIDAY INTO THE WEEKEND, RAIN CHANCES WILL LESSEN A BIT BUT STILL
BE CONFINED TO MAINLY THE AFTERNOON AND EARLY EVENING HOURS.
WITH HIGHS TOPPING OUT IN THE LOW TO MIDDLE 90S EACH AFTERNOON AND
DEW POINTS IN THE 70S, AFTERNOON HEAT INDEX VALUES WILL CLIMB TO
AROUND 105F IN MANY LOCATIONS THURSDAY INTO THE AT LEAST SATURDAY.
IF THIS TREND CONTINUES IN FUTURE MODEL DATA, A "HEAT ADVISORY" MAY
BE NEEDED FOR PORTIONS OF THE AREA LATE THIS WEEK AND INTO THE
WEEKEND.
BETTER RAIN CHANCES CURRENTLY LOOK TO RETURN TO THE FORECAST AT THE
BEGINNING OF NEXT WEEK. THIS IS DUE TO A FRONTAL BOUNDARY THAT'S
PROGGED TO SINK SOUTH INTO THE REGION. IF THIS SCENARIO INDEED
VERIFIES, THE WIDESPREAD SHOWERS AND STORMS OVER THE AREA WILL BRING
AN END TO THE HEAT STRESS ACROSS THE FORECAST AREA FOR AT LEAST A
FEW DAYS. /19/
AVIATION
(12Z TAFS)
ISSUED AT 633 AM CDT WED JUL 8 2026
PATCHY FOG WILL BE POSSIBLE NEAR HEZ, RESULTING IN IFR/LIFR FLIGHT
CONDITIONS UNTIL 14Z. OTHERWISE, VFR FLIGHT CONDITIONS WITH
SOUTHWEST WINDS BETWEEN 5-8 KTS WILL PREVAIL THROUGH THE PERIOD.
WINDS ARE EXPECTED TO SHIFT TO THE SOUTH AFTER 00Z THURSDAY. /SW/
PRELIMINARY POINT TEMPS/POPS
JACKSON 92 73 92 74 / 20 10 30 10
MERIDIAN 93 73 93 74 / 30 10 40 10
VICKSBURG 92 75 93 76 / 40 10 10 10
HATTIESBURG 94 75 94 75 / 20 20 40 10
NATCHEZ 93 75 94 75 / 30 10 20 0
GREENVILLE 92 74 94 77 / 30 10 40 10
GREENWOOD 92 74 94 76 / 30 20 50 10
JAN WATCHES/WARNINGS/ADVISORIES
MS...NONE.
LA...NONE.
AR...NONE.
19/SW
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