152
FXUS64 KSHV 260649
AFDSHV
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SHREVEPORT LA
149 AM CDT MON MAY 26 2025
..NEW AVIATION
UPDATE
ISSUED AT 919 PM CDT SUN MAY 25 2025
SEVERE THREAT HAS BEEN GRADUALLY DIMINISHING OVER THE PAST FEW
HOURS, THUS PROMPTING THE EXPIRATION OF THE SEVERE THUNDERSTORM
WATCH AS OF 9 PM. HOWEVER, COULD CONTINUE TO SEE A FEW STRONG
STORMS EMBEDDED WITHIN THE CONVECTIVE LINE ACROSS SOUTH ARKANSAS
INTO NORTH LOUISIANA OVER THE NEXT HOUR OR TWO. FOR THIS FORECAST
PACKAGE, WENT AHEAD AND INCREASED POPS SOUTHWARD TO ACCOUNT FOR
THE SOUTHERN PROGRESSION OF THE ONGOING CONVECTIVE CLUSTER. TOWARD
DAYBREAK, ANOTHER STRONG CONVECTIVE COMPLEX IS FORECAST TO
APPROACH THE REGION FROM THE WEST ALLOWING FOR THE POSSIBILITY OF
SEVERE THUNDERSTORMS AND FLOODING RAINS ACROSS MUCH OF THE
ARKLATEX. /05/
SHORT TERM
(THIS EVENING THROUGH TUESDAY)
ISSUED AT 252 PM CDT SUN MAY 25 2025
KEY MESSAGES
- MULTIPLE ROUNDS OF SHOWERS AND THUNDERSTORMS ARE EXPECTED DURING
THIS SHORT-TERM FORECAST PERIOD WITH ALL SEVERE WEATHER HAZARDS
POSSIBLE.
- LARGE HAIL AND STRAIGHT-LINE DAMAGING WIND GUSTS ARE THE PRIMARY
SEVERE THREATS, WITH INCREASING CONFIDENCE OF A POTENTIALLY HIGH
END WIND EVENT OVERNIGHT THROUGH MONDAY MORNING.
- A FLOOD WATCH IS IN EFFECT FOR THE ENTIRE FOUR-STATE REGION FROM
THIS EVENING THROUGH 7 AM TUESDAY WITH RAINFALL TOTALS AVERAGING
BETWEEN 2-4 INCHES AND ISOLATED HIGHER AMOUNTS.
A VERY ACTIVE WEATHER PERIOD IS IN STORE FOR THE REGION OVER MUCH
OF THE NEXT WEEK, ESPECIALLY IN THE SHORT-TERM WITH SEVERE WEATHER
AND FLOODING IMPACTS EXPECTED. BEGINNING LATE THIS AFTERNOON INTO
THIS EVENING, THE VERY WARM AND MOIST AIR MASS IN PLACE IS ALREADY
YIELDING STRONG TO SEVERE CONVECTION ACROSS PARTS OF ARKANSAS AND
OKLAHOMA, PROMPTING SEVERE THUNDERSTORM WATCH HEADLINES TO INCLUDE
MANY OF OUR SW ARKANSAS COUNTIES THIS AFTERNOON INTO THIS EVENING.
THIS CONVECTION IS LARGELY OCCURRING NEAR AND ALONG A STATIONARY
FRONTAL BOUNDARY JUST TO OUR NORTH WHILE ADDITIONAL CONVECTION HAS
BEGUN TO DEVELOP SOUTH OF THE BOUNDARY. GIVEN THE ROBUST HEATING
AND INSTABILITY IN PLACE THIS AFTERNOON, THESE PULSE THUNDERSTORMS
AHEAD OF THE BOUNDARY WILL HAVE THE POTENTIAL TO PRODUCE ISOLATED
LARGE HAIL AND DAMAGING WIND GUSTS ACROSS MUCH OF SW ARKANSAS. AS
WE MOVE INTO THE EARLY EVENING, THE LINE OF DEVELOPING CONVECTION
TO OUR NORTH WILL ALSO TAKE AIM ON OUR NORTHERN COUNTIES AND MAY
TRIGGER ADDITIONAL OUTFLOWS AHEAD OF IT.
LOOKING A BIT LATER ON AND ESPECIALLY AFTER MIDNIGHT, YET ANOTHER
CONVECTIVE COMPLEX APPEARS POISED TO TAKE AIM ON OUR REGION FROM
THE WEST WITH A HEIGHTENED CONCERN OF DAMAGING STRAIGHT-LINE
WINDS BASED ON THE CONSISTENCY OF A LOT OF THE HI-RES MODEL
GUIDANCE. THIS COMPLEX IS PROGGED TO TRACK PARALLEL ALONG THE
MIDDLE RED RIVER VALLEY SOUTHWARD TO THE I-20 CORRIDOR IN NORTH
CENTRAL TX BEFORE EXPANDING FARTHER SOUTH AS IT ENTERS OUR REGION
THROUGH THE PRE-DAWN HOURS ON MEMORIAL DAY. THERE ARE SOME
INDICATIONS THIS COULD POTENTIALLY BE A LONG-LIVED WIND EVENT,
RAISING CONCERNS OF POWER OUTAGES ASSOCIATED WITH ANY WIDESPREAD
DAMAGING WIND GUSTS.
AS IF THE POTENTIAL SEVERE CONCERNS AREN'T ENOUGH AT THIS POINT,
WE'RE ALSO LOOKING AT THE PROSPECTS OF REPEATED ROUNDS OF HEAVY
RAINFALL THROUGH AT LEAST TUESDAY. WITH THAT IN MIND, HAVE ISSUED
A FLOOD WATCH AREAWIDE THROUGH 7 AM TUESDAY WITH THE POSSIBILITY
OF FURTHER EXTENSIONS BASED ON ADDITIONAL RAINFALL FORECASTED FOR
LATER IN THE WEEK. FOR NOW, IT APPEARS THE STALLED BOUNDARY TO OUR
NORTH WILL FINALLY GAIN ENOUGH UPPER-LEVEL SUPPORT TO SHIFT SOUTH
INTO OUR REGION BY LATE TUESDAY BEFORE ADVANCING TOWARD THE COAST
BY TUESDAY NIGHT INTO WEDNESDAY.
/19/
LONG TERM
(TUESDAY NIGHT THROUGH NEXT SATURDAY)
ISSUED AT 252 PM CDT SUN MAY 25 2025
THE AFOREMENTIONED SFC BOUNDARY IS PROGGED TO STALL ALONG THE GULF
COAST WITH A SECONDARY FRONT FOLLOWING CLOSELY BEHIND IT. COMBINED
WITH THE LONGWAVE TROUGH AXIS DIGGING FARTHER SOUTH AND ADDITIONAL
DISTURBANCES MOVING THROUGH THE UPPER-LEVEL FLOW PATTERN, RAINFALL
AND THUNDERSTORMS WILL REMAIN POSSIBLE THROUGH MID TO LATE WEEK.
AS A RESULT, THE FLASH FLOODING CONCERNS ARE LIKELY TO PERSIST IN
ADDITION TO INCREASING HYDROLOGIC RESPONSE ACROSS OUR AREA LAKES
AND RIVERS.
THIS UNSETTLED PATTERN MAY FINALLY BEGIN TO EASE BY NEXT WEEKEND
AS THE UPPER-LEVEL TROUGH AXIS PIVOTS EASTWARD INTO THE SE CONUS
AND ALONG THE EASTERN SEABOARD. UNTIL THEN, EXPECT THIS ACTIVE
PATTERN TO PERSIST FOR MUCH OF THE UPCOMING WEEK WITH MULTIPLE
ROUNDS OF SEVERE WEATHER AND HEAVY RAINFALL. IT'S PROBABLY GOES
WITHOUT SAYING, BUT TEMPERATURES ARE EXPECTED TO BE MUCH MILDER
COMPARED TO THIS PAST WEEK IF THERE'S ANY SILVER LINING IN THIS
FORECAST.
/19/
AVIATION
(06Z TAFS)
ISSUED AT 138 AM CDT MON MAY 26 2025
FOR THE 26/06Z TAF PERIOD...A MIX BAG OF VFR/MVFR FLIGHT
CONDITIONS ACROSS THE TAF SITES, AS SHOWERS/THUNDERSTORMS AND LOW
CLOUDS CONTINUE TO MOVE INTO THE REGION. EVENTUALLY, EXPECT
REDUCED FLIGHT CATEGORIES AREAWIDE, AS LOW CLOUDS AND A CLUSTER OF
THUNDERSTORMS MOVE INTO THE REGION OVERNIGHT INTO THE MORNING
HOURS. VFR CONDITIONS SHOULD RETURN BY THE END OF THE PERIOD IN
WAKE OF THE CONVECTION, BUT MID TO HIGH CLOUDS WILL HANG ACROSS
THE REGION. /20/
SPOTTER INFORMATION STATEMENT
ISSUED AT 333 AM CDT SUN MAY 25 2025
SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND EVENING, AND
EVEN THROUGH THE OVERNIGHT AS THUNDERSTORMS APPROACH THE FOUR
STATE REGION.
PRELIMINARY POINT TEMPS/POPS
SHV 72 86 71 84 / 50 40 20 30
MLU 72 85 71 84 / 30 50 30 40
DEQ 63 81 60 80 / 50 30 10 10
TXK 68 84 65 82 / 50 40 10 20
ELD 66 83 64 82 / 30 50 20 30
TYR 69 85 67 82 / 50 30 20 20
GGG 68 85 66 83 / 50 40 20 30
LFK 70 87 70 85 / 50 40 30 50
SHV WATCHES/WARNINGS/ADVISORIES
AR...FLOOD WATCH THROUGH TUESDAY MORNING FOR ARZ050-051-059>061-
070>073.
LA...FLOOD WATCH THROUGH TUESDAY MORNING FOR LAZ001>006-010>014-
017>022.
OK...FLOOD WATCH THROUGH TUESDAY MORNING FOR OKZ077.
TX...FLOOD WATCH THROUGH TUESDAY MORNING FOR TXZ096-097-108>112-
124>126-136>138-149>153-165>167.
SHORT TERM...05
LONG TERM....19
AVIATION...20
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