SPC 0600Z Day 2 Outlook

Day 2 Outlook Image

Day 2 Convective Outlook  
NWS Storm Prediction Center Norman OK
1212 AM CDT Sat Oct 24 2020

Valid 251200Z - 261200Z


Organized severe thunderstorms are not currently forecast across the
contiguous U.S. on Sunday.

The upper-air pattern will amplify over the western U.S. on Sunday
as a large-scale trough digs southward into the Colorado River
valley.  A broad, strong belt of southwesterly mid-level flow will
extend northeastward from the Desert Southwest through the central
Great Plains and into the Great Lakes.  In the low levels, an arctic
cold front will surge southward across a large part of the southern
Great Plains during the period with only a weak low/inverted surface
trough draped northeastward from TX into the Ozark Plateau.  

Isolated weak/disorganized thunderstorms are forecast during the day
on Sunday across parts of FL and parts of the southern Appalachians.
The risk for showers and a few post-frontal/elevated thunderstorms
will increase Sunday night across the southern Great Plains as a
40-kt southerly LLJ develops.  Weak instability will likely preclude
severe thunderstorms from developing with the late-night activity.

..Smith.. 10/24/2020

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