507 
ACUS48 KWNS 230838
SWOD48
SPC AC 230836

Day 4-8 Convective Outlook  
NWS Storm Prediction Center Norman OK
0336 AM CDT Sat Aug 23 2025

Valid 261200Z - 311200Z

...DISCUSSION...
...Tuesday/Day 4 to Thursday/Day 6...
A large-scale trough will remain in place across the eastern U.S. on
Tuesday, as an area of surface high pressure remains dominant across
much of the eastern half of the nation. Non-severe thunderstorms may
develop on the western periphery of post-frontal airmass, over parts
of the southern and central High Plains on Tuesday and Wednesday.

On Thursday, low-level moisture return is forecast to take place
across the southern and central Plains. A pocket of moderate
instability will be possible across parts of Oklahoma, where
scattered thunderstorms may develop during the afternoon. In spite
of this, deep-layer shear is forecast to remain relatively weak,
suggesting any severe threat will be marginal.

...Friday/Day 7 and Saturday/Day 8...
From Friday into Saturday, northwesterly mid-level flow will remain
in place over parts of much of the central and eastern part of the
nation. At the surface, a moist airmass will likely be located over
parts of the Gulf Coast states, where scattered thunderstorms will
be possible each day. Deep-layer shear is forecast be relatively
weak across most of the region from Friday into Saturday, suggesting
that any severe threat will remain localized.

..Broyles.. 08/23/2025


File: /home/ldm/var/data/BY_SOURCE/KWNS/ACUS48/20250823T0838.txt