945
FXUS64 KJAN 262254 AAA
AFDJAN
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE JACKSON MS
554 PM CDT WED MAR 26 2025
..NEW AVIATION
DISCUSSION
ISSUED AT 249 PM CDT WED MAR 26 2025
A LOW PRESSURE SYSTEM SLOWLY LIFTING OUT OF THE SOUTHWEST U.S.
HEADING INTO THE BACK HALF OF THIS WEEK WILL BRING INCREASING
CHANCES FOR SHOWERS AND THUNDERSTORMS TO OUR AREA FRIDAY INTO
SATURDAY. WHILE A FEW STRONG TO SEVERE THUNDERSTORMS CAN'T BE RULED
OUT, THE PRIMARY RISK FOR SEVERE THUNDERSTORMS IN OUR AREA WILL BE
SUNDAY AND MONDAY AS A PAIR OF SHORTWAVE DISTURBANCES MOVE EAST
ACROSS THE COUNTRY. BUILDING INSTABILITY WITH 2000-3000 J/KG OF
SBCAPE ALONG AND SOUTH OF A LINGERING COLD FRONT BOUNDARY WILL BE
FUEL FOR SEVERE THUNDERSTORMS ESPECIALLY NORTH OF INTERSTATE 20 LATE
SUNDAY AFTERNOON AND EVENING. 0-6KM WIND SHEAR OF 35-50 KTS WILL
SUPPORT ORGANIZED UPDRAFTS IN STORMS THAT DEVELOP. THIS SHOULD POSE
A THREAT FOR SUPERCELL THUNDERSTORMS EVENTUALLY GROWING UPSCALE
OVERNIGHT WITH WIND SHEAR PARALLEL TO THE FRONTAL ZONE.
THEN AS STORMS PUSH SOUTHWARD SUNDAY NIGHT INTO MONDAY MORNING, THE
FRONT ITSELF SHOULD LOSE STRONG SUPPORT. IT'S UNCERTAIN WHETHER
OUTFLOW AND THE FRONT WOULD ALLOW STORMS TO FULLY CLEAR SOUTHERN LA
AND MS BY MONDAY AFTERNOON, SO WE ARE HIGHLIGHTING THE POTENTIAL FOR
ADDITIONAL STRONG TO SEVERE THUNDERSTORMS MONDAY MORNING INTO MONDAY
AFTERNOON FOR AREAS ESPECIALLY SOUTH OF INTERSTATE 20. THE LATEST
GFS FOR EXAMPLE RETAINS AN AREA OF 2000-3000 J/KG OF SBCAPE ALONG
THE GULF COAST MONDAY AFTERNOON. EXPECT ADJUSTMENTS TO THE IMPACTS
AND TIMING WITH SUBSEQUENT FORECAST UPDATES, BUT GUIDANCE HAS BEEN
FAIRLY CONSISTENT WITH THE GENERAL SETUP.
WE ARE IN THE TIME OF YEAR WHERE THESE FRONTS DON'T QUITE CLEAR THE
REGION AND BETTER UPPER-LEVEL FORCING PULLS NORTHWARD. THE ZONAL
UPPER-LEVEL PATTERN INTO WEDNESDAY WILL ALLOW FOR THE FRONTAL ZONE
TO REMAIN IN THE REGION, AND MOIST UNSTABLE AIR WILL REMAIN AROUND
THE CENTRAL GULF COAST. MODELS DIVERGE WITH HOW TO HANDLE THE UPPER-
LEVEL PATTERN BY MID WEEK, BUT EITHER UPSTREAM MCS ACTIVITY OR
ANOTHER UPPER-LEVEL WAVE COULD BRING INCREASING CHANCES FOR SHOWERS
AND THUNDERSTORMS TO THE MIDWEEK TIME FRAME. /NF/
AVIATION
(00Z TAFS)
ISSUED AT 554 PM CDT WED MAR 26 2025
VFR FLIGHT CATEGORIES, WITH MID-HIGH LEVEL CLOUDINESS & LIGHT
SOUTHERLY SFC WIND, WILL BE THE NORM THE NEXT 24 HOURS. WINDS
WILL SHIFT SOUTHERLY INTO THURSDAY AFTN, SUSTAINED AROUND 10MPH &
GUSTS AROUND 15-20MPH, HIGHER IN NORTHERN TAF SITES. /DC/
PRELIMINARY POINT TEMPS/POPS
JACKSON 56 83 61 80 / 0 0 0 10
MERIDIAN 52 83 58 82 / 0 0 0 0
VICKSBURG 57 83 62 79 / 0 0 0 20
HATTIESBURG 55 85 59 82 / 0 0 0 10
NATCHEZ 59 81 63 77 / 0 0 0 40
GREENVILLE 54 80 62 77 / 0 0 0 10
GREENWOOD 55 82 63 79 / 0 0 10 10
JAN WATCHES/WARNINGS/ADVISORIES
MS...NONE.
LA...NONE.
AR...NONE.
NF/DC
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