Day 4-8 Outlook
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0333 AM CST Tue Dec 17 2024 Valid 201200Z - 251200Z ...DISCUSSION... Strong surface high pressure over the central U.S. and a prior cold front intruding into the southern Gulf of Mexico will result in a dearth of boundary layer moisture across much of the CONUS through at least Day 6/Sun. As a result, thunderstorm chances will be low. Toward the end of the period, some forecast guidance suggests lee troughing will allow southeasterly low-level flow to bring modest Gulf moisture northward across TX. This may result in some increased thunderstorm chances across south/central TX on Day 7-8/Mon-Tue. However, severe-thunderstorm potential will remain low during the Day 4-8 time frame.