Day 4-8 Outlook
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0337 AM CDT Fri Nov 05 2021 Valid 081200Z - 131200Z ...DISCUSSION... A progressive mid/upper level pattern is forecast during the Day 4-8 period. An upper shortwave trough will migrate across the Rockies to the Great Lakes and Northeast through Day 6/Wed. Meanwhile, a larger-scale upper trough will develop over the Plains on Day 6-7/Wed-Thu and spread across the central U.S. through the end of the period. Some thunderstorm potential could develop across parts of the central/southern Plains ahead of a cold front on Wed/Thu, but severe potential appears low given limited moisture/instability. Widespread precipitation will likely shift eastward across parts of the central/eastern U.S. through Days 7-8/Thu-Fri as the upper trough and a surface cold front progress eastward. However, severe thunderstorms are not expected given poor boundary-layer moisture and limited instability. Read more LIVE: spc.noaa.gov
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