ZCZC SPCSWOMCD ALL ACUS11 KWNS 081250 SPC MCD 081250 VAZ000-TNZ000-KYZ000-081515- Mesoscale Discussion 0693 NWS Storm Prediction Center Norman OK 0750 AM CDT Wed May 08 2024 Areas affected...Southern Kentucky...Tennessee Concerning...Severe potential...Watch possible Valid 081250Z - 081515Z Probability of Watch Issuance...40 percent SUMMARY...An isolated severe threat is expected to continue this morning. The stronger storms will have potential for hail, strong gusts and a brief tornado. Weather watch issuance may become necessary later this morning. DISCUSSION...The latest mosaic radar imagery in the Tennessee Valley shows numerous thunderstorms along an east-to-west outflow boundary, from southern Kentucky into northern Tennessee. To the south of this convection, the RAP has moderate instability in place, with MLCAPE generally in the 2000 to 2500 J/kg range. Forecast soundings in northern Tennessee this morning suggest the activity is surface-based. WSR-88D VWPs along and near the outflow boundary have 0-6 km shear in the 45 to 50 knot range, which will continue to be sufficient for supercells and bowing line segments. Wind damage and hail the primary threats. However, VWPs also have 0-1 km shear in the 20 to 25 knot range near this feature, suggesting that a brief tornado will be possible with embedded supercells. ..Broyles/Edwards.. 05/08/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...MRX...JKL...LMK...OHX...PAH...MEG... LAT...LON 35698430 35638514 35668620 35788711 35988802 36248855 36468876 36718889 36898867 36818785 36588672 36708500 36848408 36608352 36038359 35698430 NNNN