Day 4-8 Outlook
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0347 AM CDT Mon Oct 27 2025 Valid 301200Z - 041200Z ...DISCUSSION... An amplified, but stagnant mid-level flow pattern is forecast to develop over the US late this week continuing into the weekend. Punctuated, by continued large-scale troughing over the eastern US, a deep coastal low will develop and move off the Atlantic Coast. Accompanying the low, a strong cold front is forecast to scour moisture from much of the continent as surface high pressure builds behind it. As troughing is maintained to the east, ridging will build over the western US supporting strong northwesterly flow aloft over the central CONUS. Strengthening surface high pressure will favor continued offshore flow and little moisture return. Widespread cooler and more stable surface conditions are forecast to persist into early next week with little change in the large-scale pattern. Thus, thunderstorm chances are low with little severe risk through the extended forecast period.
