SPC 0730Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0210 AM CDT Mon Oct 19 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... West-southwesterly mid-level flow will be in place on Wednesday from the Rockies eastward to the Great Lakes. At the surface, high pressure will dominate the Great Lakes and Ohio Valley as moisture returns northward into the central Plains and mid Mississippi Valley. Scattered thunderstorms will be possible from late Wednesday afternoon into the overnight period as low-level flow increases along the northern edge of the moist sector from the central Plains to the southwestern Great Lakes. Isolated thunderstorms will also be possible from parts of the southern Plains eastward across the Gulf Coast States. A few storms may also develop from northeast Ohio into northwestern New England. The combination of instability and shear across the continental United States appears insufficient for a severe threat on Wednesday and Wednesday night. ..Broyles.. 10/19/2020
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