Subj : MESO: Mesoscale Discussion 2035 To : wx-storm@lists.illinois.edu From : COD Weather Processor Date : Thu Aug 24 2023 17:09:29 ACUS11 KWNS 241709 SWOMCD SPC MCD 241708=20 VAZ000-NCZ000-WVZ000-TNZ000-KYZ000-GAZ000-241945- Mesoscale Discussion 2035 NWS Storm Prediction Center Norman OK 1208 PM CDT Thu Aug 24 2023 Areas affected...Middle/Eastern TN...Western NC...Southwestern VA Concerning...Severe potential...Watch unlikely=20 Valid 241708Z - 241945Z Probability of Watch Issuance...5 percent SUMMARY...A few water-loaded downdrafts capable of damaging gusts are possible from Middle TN into western NC and southwestern VA this afternoon. DISCUSSION...Recent surface analysis and satellite imagery shows a southward/southeastward progressing outflow boundary from north Middle TN eastward into northwest NC and then back northeastward across western VA. Cumulus continues to increase in the vicinity of this outflow as the downstream airmass heats and destabilizes. A remnant MCV is also apparent in visible imagery over WV. Combination of these features with additional heating/destabilization is expected to result in thunderstorm development from middle TN northeastward into southwest/western VA this afternoon.=20 Upper 80s/low 90s surface temperatures combined with upper 60s/low 70s dewpoints will help foster moderate to strong buoyancy, with afternoon MLCAPE likely reaching 2500 J/kg from middle TN into northern GA. Slightly lower buoyancy closer to 1000-1500 J/kg is anticipated farther north and east into western NC and southwest/western VA. In contrast to this strong buoyancy, vertical shear will be weak, with effective bulk shear likely staying below 20 kt. This lack of stronger shear will limit storm organization, with a multicell mode anticipated. Even so, a few water-loaded downdrafts capable of damaging gusts are possible across the region this afternoon. ...Mosier/Grams.. 08/24/2023 ....Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!903y26CWflKufiz6TwPawCp2wmww7ExBWZNLdwQpLp7KA9EuSPcbD3UCzP4jrTLdMYhh2MQnV= rL8klEmocLtOYRBFuE$ for graphic product... ATTN...WFO...RNK...RLX...GSP...MRX...JKL...FFC...OHX... LAT...LON 36208539 36778313 37278138 37608003 37477958 36817991 35568151 35048311 34878398 34908500 35578595 36208539=20 =3D =3D =3D To unsubscribe from WX-STORM and you already have a login, go to https://lists.illinois.edu and use the "Unsubscribe" link. Otherwise email Chris Novy at cnovy@cox.net and ask to be removed from WX-STORM. --- SBBSecho 3.14-Linux * Origin: capitolcityonline.net * Telnet/SSH:2022/HTTP (1:2320/105) .