SPC 1730Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1224 PM CDT Tue Oct 20 2020 Valid 211200Z - 221200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... No severe thunderstorms are expected across the continental United States on Wednesday or Wednesday night. ...Discussion... Showers and isolated thunderstorms are expected Wednesday, in the vicinity of a surface baroclinic zone that will oscillate within a zone from roughly the southern Plains east-northeastward into the Northeast. The northeastern portion of this boundary will make some eastward progress with time, as a mid-level short-wave trough shifts across the Upper Great Lakes region and moves into eastern Canada. Meanwhile, some northward retreat of the boundary is expected over the Plains, as a second mid-level short-wave feature digs southeastward across the Intermountain West. Other showers and occasional lightning will occur in the vicinity of the Gulf and Atlantic Coastal regions, from south Texas to the Carolinas, where a moist low-level airmass will contribute to modest CAPE. ..Goss.. 10/20/2020
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