ZCZC SPCSWOMCD ALL ACUS11 KWNS 282313 SPC MCD 282313 LAZ000-ARZ000-TXZ000-290015- Mesoscale Discussion 0564 NWS Storm Prediction Center Norman OK 0613 PM CDT Sun Apr 28 2024 Areas affected...East TX...Northwest LA...Southern AR Concerning...Tornado Watch 158... Valid 282313Z - 290015Z The severe weather threat for Tornado Watch 158 continues. SUMMARY...Severe threat will spread east of ww158 shortly. New tornado watch will likely be warranted immediately downstream. DISCUSSION...Sustained low-level warm advection will continue across the lower MS Valley early this evening in association with LLJ that is focused from the lower Sabine River Valley into western AR. Deep convection that evolved upstream over central TX has propagated east as the LLJ has shifted downstream. Multiple thunderstorm clusters have evolved with the leading edge of this activity now surging into Harrison/Panola County region. Over the next few hours this complex will advance beyond the eastern border of ww158 and a new tornado watch will likely be issued soon to account for this risk. ..Darrow.. 04/28/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...LCH...SHV...HGX...FWD... LAT...LON 30809593 33559391 33169223 31369321 30809593 NNNN