ACUS11 KWNS 270002
SWOMCD
SPC MCD 270001
ARZ000-270130-

Mesoscale Discussion 2143
NWS Storm Prediction Center Norman OK
0701 PM CDT Wed Aug 26 2026

Areas affected...portions of central and southern Arkansas

Concerning...Severe Thunderstorm Watch 628...

Valid 270001Z - 270130Z

The severe weather threat for Severe Thunderstorm Watch 628
continues.

SUMMARY...A cluster of storms over central AR should continue to
move south with occasional strong/severe gusts possible through this
evening.

DISCUSSION...Across WW628, radar imagery showed a cluster of strong
to severe thunderstorms from southeastern OK into central AR. The
strongest storms within the cluster are located across central AR,
and this local clustering should continue this evening with several
observed outflows likely to merge over the next hour or so. With
plentiful buoyancy in place, maintenance of the ongoing storms or
new development on the outflow appears likely. Modest deep-layer
shear (15-25 kt) is supportive of a pulse multicell storm mode. This
may allow for occasional strong to severe gusts given the favorable
environment for strong downdrafts with high PWATs and consolidated
outflow. Radar trends and short term model guidance show these
storms continuing to propagate south/southeast into southern AR with
a continued severe risk across central and southern portions of
WW628 this evening.

..Lyons.. 08/27/2026

...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fjg!8uB0Xlc1LxgJBz0rXSAG44hRDODM7oPF-Oq_oFsm97QS9MyyDQ93OyP0HaQVSuVGiHKIFwmM-OS_xYuytY8SRJb7xyU$ for graphic product...

ATTN...WFO...LZK...SHV...

LAT...LON 33329341 33589367 33759372 34109389 34429387 34919359
35229288 35219220 35119183 34539148 33679154 33269220
33139296 33329341

MOST PROBABLE PEAK WIND GUST...55-70 MPH
MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN


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--- scorpsmtpd
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