Day 4-8 Outlook
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0330 AM CST Wed Jan 13 2021 Valid 161200Z - 211200Z ...DISCUSSION... Model consensus is that a synoptic upper trough will move through the eastern U.S. day 4 (Saturday) followed closely by an upstream trough on day 5. This pattern will be accompanied by offshore winds over the Gulf, maintaining stable conditions inland. A pattern transition is forecast to occur by day 6 (Monday) as an upper trough amplifies across the Great Basin region. Modifying Gulf moisture should return through south TX, but instability will remain insufficient for a severe threat. Moisture return should be more substantial across south and southeast TX and possibly into southern LA by day 7 with potential for greater destabilization. However, by this time frame. predictability diminishes due to uncertainty regarding the trajectory of the Great Basin upper trough.
There’s more click here.