SPC 0700Z Day 2 Outlook

Day 2 Outlook Image

Day 2 Convective Outlook  
NWS Storm Prediction Center Norman OK
1200 AM CST Fri Nov 27 2020

Valid 281200Z - 291200Z


Organized severe thunderstorms appear unlikely across the contiguous
United States on Saturday.

...Synopsis and Discussion...
A closed upper low initially over the southern High Plains should
move slowly eastward across TX/OK on Saturday. A weak surface low is
forecast to form over the western Gulf of Mexico ahead of this
feature, eventually reaching the coastal LA vicinity by early Sunday
morning. Large-scale lift ahead of the upper low and weak low-level
warm advection will likely support numerous to widespread showers
and thunderstorms across central/east TX Saturday morning, which
should limit instability. The majority of this convection is
expected to remain elevated, as a surface front should generally
move off the middle/upper TX Coast through the day. As the surface
low develops northeastward over the western Gulf of Mexico,
increasing low-level moisture will begin to approach the LA Coast
late Saturday night into early Sunday morning as a marine warm front
develops slowly northward. At this point, it appears that the
potential for surface-based thunderstorms will probably remain
offshore from the LA Coast through the end of the period.
Accordingly, severe probabilities have not been included.

..Gleason.. 11/27/2020

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