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Day 4-8 Convective Outlook  
NWS Storm Prediction Center Norman OK
0337 AM CST Fri Dec 13 2024

Valid 161200Z - 211200Z

...DISCUSSION...
A shortwave upper trough will traverse the Midwest and Great Lakes
region on Day 4/Mon. Meanwhile, a cold front will track southeast
across the southern Plains and Mid-South vicinity, extending from
northern AL toward the Upper TX Coast/south-central TX by early Day
5/Tue. Southerly low-level flow ahead of the front will bring Gulf
moisture across the south and east Texas into the lower MS
Valley/central Gulf coast region, aiding in modest destabilization
on Monday. However, stronger mid/upper level flow and large-scale
ascent will remain north over the Midwest. Furthermore, deep-layer
flow will mostly be parallel to the cold front. As a result,
warm-advection precipitation and thunderstorms are likely from east
TX into the Lower MS Valley, but severe potential appears limited.

The cold front from Day 4/Mon will likely stall on Day 5/Tue across
parts of the TX coast and Lower MS Valley. By late Tuesday into Day
6/Wed, another upper trough is expected to eject across the Plains
into the Southeast. A sharper cold front associated with this system
will move offshore the Gulf coast, with some potential for heavy
rain and thunderstorms. However, given prior days' convection, poor
heating/widespread cloudiness and weak instability, severe potential
is not expected. Given the strong cold front intruding into the
Gulf, boundary-layer moisture will beco*e scant and severe-
thunderstorm potential is expected to be low Days 7-8/Thu-Fri.