254
ACUS11 KWNS 260631
SWOMCD
SPC MCD 260631
LAZ000-ARZ000-260800-
MESOSCALE DISCUSSION 0544
NWS STORM PREDICTION CENTER NORMAN OK
0131 AM CDT SUN APR 26 2026
AREAS AFFECTED...SOUTHERN ARKANSAS AND NORTHERN LOUISIANA
CONCERNING...SEVERE THUNDERSTORM WATCH 147...
VALID 260631Z - 260800Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 147
CONTINUES.
SUMMARY...EARLIER SUPERCELLS HAVE GROWN UPSCALE INTO A LINEAR/BOWING
CLUSTER WITH CONTINUED WIND DAMAGE AND ISOLATED LARGE HAIL
POTENTIAL.
DISCUSSION...EARLIER SUPERCELLS IN SOUTHWEST AR, WITH A HISTORY OF
VERY LARGE HAIL, HAVE NOW MERGED AND TRANSITIONED TO MORE OF A
LINEAR/COLD POOL-DRIVEN STRUCTURE, WITH THE LEAD SUPERCELL EVOLVING
INTO A COMMA HEAD. THIS SUGGESTS THE SEVERE THREAT IS ALSO
TRANSITIONING MORE TO WIND DAMAGE AND EMBEDDED MESOVORTEX
CIRCULATIONS, THOUGH STRONG UPDRAFTS IN THE CLUSTER COULD STILL
PRODUCE LARGE HAIL. THIS STORM CLUSTER WILL LIKELY PERSIST FOR THE
NEXT COUPLE OF HOURS WHILE MOVING SOUTHEASTWARD ALONG THE BUOYANCY
GRADIENT FROM SOUTHERN AR INTO NORTHERN LA. THE SEVERE-THREAT WILL
POTENTIALLY REACH A TIER OR TWO OF COUNTIES/PARISHES EAST OF THE
WATCH, BUT MOST OF THE THREAT SHOULD REMAIN WITHIN THE WATCH AREA.
..THOMPSON.. 04/26/2026
..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT
ATTN...WFO...JAN...LZK...SHV...
LAT...LON 33289265 33469223 33339202 32989181 32599195 32439221
32359265 32429313 32629350 32819375 33069380 33289360
33289265
MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 90 MPH
MOST PROBABLE PEAK WIND GUST...55-70 MPH
MOST PROBABLE PEAK HAIL SIZE...1.00-1.75 IN
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