ACUS11 KWNS 280346
SWOMCD
SPC MCD 280346=20
ARZ000-280445-

Mesoscale Discussion 0588
NWS Storm Prediction Center Norman OK
1046 PM CDT Mon Apr 27 2026

Areas affected...parts of northeast/north-central AR

Concerning...Tornado Watch 166...

Valid 280346Z - 280445Z

The severe weather threat for Tornado Watch 166 continues.

SUMMARY...An intense supercell across north-central Arkansas will
shift east into northeastern portions of the state over the next 1-2
hours. A strong (EF-2+) tornado will be possible with this storm.

DISCUSSION...A supercell is ongoing across Stone County Arkansas
late this evening. This cell has exhibited strong rotation and a TDS
recently. The downstream environment is strongly unstable, with
MLCAPE near 3000-3500 J/kg and 0-1 SRH greater than 300 m2/s2.
Furthermore, this storm is moving into an area of effective STP
between 8 and 10. Meanwhile, the VWP from LZK indicates a favorable
wind profile for continues storm organization within this strongly
unstable and strongly sheared environment. This cell may continue to
pose a risk for strong tornadoes as it develops east over the next
1-2 hours.

..Leitman.. 04/28/2026

...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!_JdkuiOdLw7gGdCtb77-ORy3Hu1985dY7y2WnGotI2nraxda1olOO-nBLAK8nIcIVmO5AX_2A= 670NRiOB3tx6WX_lWk$ for graphic product...

ATTN...WFO...MEG...LZK...

LAT...LON 36049200 35999118 35809088 35449090 35409127 35529193
35789233 36019226 36049200=20

MOST PROBABLE PEAK TORNADO INTENSITY...140-170 MPH
MOST PROBABLE PEAK WIND GUST...55-70 MPH
MOST PROBABLE PEAK HAIL SIZE...2.00-3.50 IN


=3D =3D =3D
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