078
FXUS64 KJAN 261118
AFDJAN
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSON MS
618 AM CDT FRI JUN 26 2026
..NEW AVIATION
KEY MESSAGES
- DANGEROUS HEAT STRESS CONDITIONS WILL INTENSIFY ACROSS THE AREA
THIS WEEKEND INTO EARLY NEXT WEEK, WITH HEAT INDEX VALUES
EVENTUALLY TOPPING 110 DEGREES.
DISCUSSION
ISSUED AT 444 AM CDT FRI JUN 26 2026
HEAT IS THE MAIN STORY AND THE ONLY STORY TODAY. ZONAL FLOW ACROSS
THE CONUS WITH BROAD WEST-EAST RIDGE OVER THE GULF COAST TODAY
WILL BREAK DOWN INTO THE WEEKEND AND EARLY NEXT WEEK. AMPLIFYING
PATTERN WILL SEE RIDGE STRENGTHEN AND BECOME CENTERED OVER THE
MISSISSIPPI RIVER VALLEY THROUGH EARLY NEXT WEEK. 500MB HEIGHTS
EVENTUALLY PEAK AT AROUND 597DAM OVER THE OHIO RIVER VALLEY MID
WEEK. THE COMBINATION OF HEAT BENEATH THIS RIDGE AND GULF COAST
HUMIDITY WILL PUSH HEAT INDEX VALUES TO NEAR 105 DEGREES IN SOME
PLACES AGAIN TODAY, BUT INCREASINGLY OVER 105 DEGREES TOMORROW AND
SUNDAY. HEAT ADVISORIES MAY BE NEEDED FOR THE AREA IN THIS TIME
FRAME. AND THEN MONDAY AND TUESDAY SHOULD SEE THOSE VALUES CLIMB
ABOVE 110 DEGREES, WITH AN EXCESSIVE HEAT WARNING POSSIBLY NEEDED
FOR PORTIONS OF THE FORECAST AREA. AS THE CORE OF THE RIDGE SHIFTS
NORTHWARD, EASTERLY FLOW AND RETURNING TROPICAL MOISTURE WILL
BRING RAIN CHANCES BACK TO AT LEAST SOUTHERN PORTIONS OF THE
FORECAST AREA. EXPECT IT TO REMAIN HOT AND HUMID WITH SUMMERY
THUNDERSTORMS HEADING INTO EARLY JULY. /NF/
AVIATION
(12Z TAFS)
ISSUED AT 618 AM CDT FRI JUN 26 2026
AS OF 1118Z, PIB IS CURRENTLY REPORTING MVFR CONDITIONS. CEILINGS
WILL BEGIN TO IMPROVE TO VFR ACROSS PIB BY 14Z. GLH AND GWO COULD
BRIEFLY SEE GUSTY SW WINDS 18-20 KTS LATER THIS AFTERNOON. WINDS
WILL GRADUALLY START TO SUBSIDE AFTER 00Z SATURDAY. OTHERWISE, VFR
CONDITIONS WILL PREVAIL ACROSS THE AREA THROUGHOUT THE ENTIRE TAF
PERIOD. /CR/
PRELIMINARY POINT TEMPS/POPS
JACKSON 92 74 92 75 / 0 0 0 0
MERIDIAN 93 75 93 75 / 0 0 0 0
VICKSBURG 90 75 91 75 / 0 0 0 0
HATTIESBURG 94 75 95 74 / 0 0 0 0
NATCHEZ 92 75 93 75 / 0 0 0 0
GREENVILLE 90 76 91 76 / 0 0 0 0
GREENWOOD 91 76 92 76 / 0 0 0 0
JAN WATCHES/WARNINGS/ADVISORIES
MS...NONE.
LA...NONE.
AR...NONE.
NF/CR
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