Day 4-8 Outlook
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0324 AM CST Sat Nov 14 2020 Valid 171200Z - 221200Z ...DISCUSSION... Severe thunderstorm potential appears low during the Day 4-8 period. An amplified mid/upper level pattern, with a ridge in the west and a trough in the east, will de-amplify with time. The western upper ridge will shift eastward, weakening over the Great Lakes and New England through Day 6/Thu. In the wake of this feature, the upper flow regime will become more quasi-zonal. Surface high pressure is expected to persist over much of the eastern half of the CONUS, resulting in dry and quiescent conditions for much of the weak. Some weak Gulf return flow is possible across parts of the south-central states around Days 7-8/Fri-Sat. Forecast guidance suggests at least a weak shortwave mid/upper trough may eject across the Rockies and into the northern/central Plains during that time, resulting in a lee surface low and southerly low level return flow ahead of another cold front. Details in timing and location of this feature vary, but some shower or thunderstorm activity could return to parts of the south-central U.S. by next weekend.
There’s more click here.