ACUS11 KWNS 111519

SWOMCD

SPC MCD 111518 

VAZ000-WVZ000-OHZ000-KYZ000-INZ000-111715-



Mesoscale Discussion 1923

NWS Storm Prediction Center Norman OK

1018 AM CDT Tue Aug 11 2026



Areas affected...central Ohio...far southeast Indiana...northeast

Kentucky...western West Virginia...and western Virginia



Concerning...Severe Thunderstorm Watch 564...



Valid 111518Z - 111715Z



The severe weather threat for Severe Thunderstorm Watch 564

continues.



SUMMARY...The threat for damaging winds is expected to continue

across the watch area this morning. Additional storm development is

possible along a composite outflow boundary from northeast Kentucky

into western Virginia by early afternoon, possibly requiring an

additional watch issuance.



DISCUSSION...A mature MCS with embedded bowing structure is ongoing

as of 1510Z across portions of central and southern OH with a wind

gust to 82 mph reported within the past hour at the Columbus John

Glenn International Airport. While that portion of the MCS is

currently the most intense, considerable downstream convection

present from southeast OH into northwest WV leads to uncertainty in

the longevity of the damaging wind threat given the convectively

overturned air mass.



Potentially greater air mass destabilization is expected by early

afternoon farther southwest from northeast KY into western portions

of WV and VA, in the vicinity of a composite outflow boundary.

There, storm intensification on the western flank of the OH MCS

appears possible, along with additional in situ development along

the boundary. While the region will reside on the southern fringe of

stronger vertical shear, the presence of moderate to strong

instability with steepening low-level lapse rates will support

damaging wind potential with the strongest storms.



..Mead/Hart.. 08/11/2026



...Please see www.spc.noaa.gov for graphic product...



ATTN...WFO...RNK...RLX...MRX...JKL...ILN...LMK...



LAT...LON   38698497 39198499 39948458 40068341 40098255 39308200

            38798179 37788134 37018076 36858140 37048246 37458328

            38698497 



MOST PROBABLE PEAK WIND GUST...55-70 MPH