Day 4-8 Outlook
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0241 AM CDT Fri Oct 02 2020 Valid 051200Z - 101200Z ...DISCUSSION... Large-scale mid-level ridging appears likely to persist within the westerlies across the northern mid-latitude eastern Pacific into western North America through the middle of next week, with broad downstream troughing east of the Rockies into the western Atlantic. Toward the middle of next week, there could be some re-amplification of the ridging along an axis near the Canadian/U.S. Rockies, ahead of a large developing mid-level trough approaching the Pacific Coast. As this occurs, the large-scale downstream troughing may amplify along a negatively tilted axis from Hudson Bay into western Atlantic. While embedded short wave developments remain much more uncertain, this regime appears likely to maintain a west-northwesterly to northwesterly mid-level flow across much of the nation. The development of a southerly return flow of moisture off the Gulf of Mexico appears unlikely, maintaining generally dry and/or stable conditions with low convective potential.
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