SPC MD 589

MD 0589 CONCERNING TORNADO AND SEVERE THUNDERSTORM WATCHES 165...167... FOR FROM SOUTHERN OHIO ACROSS KENTUCKY AND INTO MIDDLE TO WESTERN TENNESSEE Mesoscale Discussion 0589 NWS Storm Prediction Center Norman OK 0100 AM CDT Tue Apr 28 2026 Areas affected...from southern Ohio across Kentucky and into Middle to western Tennessee Concerning...Tornado and Severe Thunderstorm Watches 165...167... Valid 280600Z - 280800Z The severe weather threat for Tornado and Severe Thunderstorm Watches 165, 167 continues. SUMMARY...A risk of tornadoes persist from northeast Arkansas into Middle Tennessee and western Kentucky, with transition to damaging wind into eastern Kentucky and southern Ohio. DISCUSSION...A linear structure with damaging gusts and QLCS tornado risk currently extends from the OH/KY border southwestward across much of northern Kentucky. Instability drops off rapidly with eastward extent, and the need for additional watches there is uncertain. Farther southwest, supercells are ongoing over much of Middle TN, near the eastern edge of the stronger instability. Shear remains quite favorable for supercells and tornadoes with effective values over 400-500 m2/s2. The tornado risk may extend a bit outside/east of TOR #0167, and a local expansion may be needed. Otherwise, the strongest combination of instability currently extends from far western KY/TN into AR. Although these cells have generally merged into a line, periodic supercell tornado risk will remain possible, especially with any rightward moving embedded cells. ..Jewell.. 04/28/2026 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...RLX...JKL...ILN...LMK...OHX...PAH...MEG...LZK... LAT...LON 35348676 35288841 35159139 35549157 35938991 35988918 36428824 37208796 37488695 38248462 38448434 38878410 39038345 38738270 37928287 37538325 36048567 35348676 MOST PROBABLE PEAK TORNADO INTENSITY...100-125 MPH MOST PROBABLE PEAK WIND GUST...55-70 MPH MOST PROBABLE PEAK HAIL SIZE...1.00-1.75 IN Read more