SPC 0600Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1236 AM CDT Mon Oct 19 2020 Valid 201200Z - 211200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... No severe thunderstorms are expected across the continental United States Tuesday and Tuesday night. ...DISCUSSION... An upper-level trough will move through the Great Plains on Tuesday as flow becomes southwesterly at mid-levels from the Mississippi Valley into the Great Lakes. At the surface, a cold front will advance southeastward during the day across the northern and central Plains as low-level moisture advects northward across the southern Plains and Ozarks. The cold front will move southeastward into Oklahoma, Missouri and Illinois during the evening. Increasing low-level convergence along the front will result in thunderstorm development during the evening and overnight. Weak instability will limit any severe threat. Elsewhere, isolated thunderstorms will be possible in the Gulf Coast States but weak deep-layer shear and instability should limit a severe threat there. ..Broyles.. 10/19/2020
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