MD 2125 CONCERNING SEVERE THUNDERSTORM WATCH 677… FOR MIDDLE ATLANTIC
Mesoscale Discussion 2125 NWS Storm Prediction Center Norman OK 0506 PM CDT Sat Sep 09 2023 Areas affected...Middle Atlantic Concerning...Severe Thunderstorm Watch 677... Valid 092206Z - 100000Z The severe weather threat for Severe Thunderstorm Watch 677 continues. SUMMARY...Severe threat continues with robust convection this evening. DISCUSSION...Numerous showers/thunderstorms have developed over the Middle Atlantic early this evening, especially from northern VA, north across central/eastern PA arcing into southern New England. Boundary layer has been overturned across the southern Middle Atlantic with several pockets of modest buoyancy remaining from central/eastern PA into CT. Latest radar imagery suggests a longer-lived MCV over western NY, just south of lake Ontario, is lifting northeast. It appears this feature is having some influence on convection trailing south into central PA along the primary zone of low-level confluence. Over the next few hours much of the greater instability should be overturned as widespread convection/clusters coalesce over central/eastern PA. Locally damaging winds, along with some hail remain possible until this air mass is overturned. ..Darrow.. 09/09/2023 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...OKX...ALY...PHI...BGM...CTP...LWX... LAT...LON 38787851 42187735 42187382 38777519 38787851
