SPC AC 061231
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0631 AM CST Thu Jan 06 2022
Valid 061300Z - 071200Z
...NO THUNDERSTORM AREAS FORECAST...
...SUMMARY...
The threat for thunderstorms will remain minimal across the
contiguous United States through tonight.
...Synopsis...
A midlevel shortwave trough approaching the lower OH and TN Valleys
today will reach the Mid-Atlantic overnight. At the surface, an
Arctic air mass will spread southeastward across TX and the lower MS
Valley today, with only weak cyclogenesis expected along the
baroclinic zone which will be south of the stronger forcing for
ascent with the midlevel trough. Some shallow, elevated convection
is ongoing this morning across the Mid-South, on the leading edge of
returning moisture above the surface. However, the returning air
mass is only partially modified, and the surface warm sector today
will be (at best) weakly unstable and displaced south of the
stronger forcing for ascent. Given relatively warm midlevel
temperatures and only weak buoyancy/ascent, the potential for
thunderstorms appears too limited to warrant an outlook area today
along the northern Gulf coast or tonight along the eastern Gulf
coast.
Air mass modification across the western Atlantic will lead to some
destabilization ahead of the cold front moving across the Southeast
overnight, but any threat for thunderstorms is expected to remain
offshore.
..Thompson/Kerr.. 01/06/2022
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