Subj : DAY48SVR: Nws Storm Prediction Center Norman Ok
To   : wx-storm@lists.illinois.edu
From : COD Weather Processor
Date : Fri Mar 14 2025 08:59:59

ACUS48 KWNS 140859
SWOD48
SPC AC 140858

Day 4-8 Convective Outlook
NWS Storm Prediction Center Norman OK
0358 AM CDT Fri Mar 14 2025

Valid 171200Z - 221200Z

....DISCUSSION...
....Monday/Day 4 to Wednesday/Day 6...
A broad anti-cyclonic flow pattern is forecast to develop across the
continental U.S. on Monday, as surface high pressure moves across
the southern and eastern U.S. On Tuesday into Wednesday, a mid-level
trough is forecast to move eastward across the western and central
U.S. Weak low-level moisture return is expected to take place across
the south-central U.S. ahead of the system. On Tuesday, thunderstorm
development appears most likely across eastern parts of the southern
and central Plains. By Wednesday, model forecasts have surface
dewpoints reaching the 50s F in parts of the lower Mississippi
Valley and Ark-La-Tex. Thunderstorms will be possible on Wednesday
along this corridor. As the system moves across the south-central
U.S. from Tuesday into Wednesday, a severe threat may develop.
However, medium-range model forecasts suggest that instability will
remain relatively weak, suggesting that any severe threat should be
isolated and marginal.

....Thursday/Day 7 and Friday/Day 8...
From Thursday into Friday, a mid-level trough is forecast to move
from the mid Mississippi Valley quickly eastward to the western
Atlantic. During the day on Thursday, thunderstorm development will
be possible ahead of the trough in parts of the eastern U.S. The
return of low-level moisture ahead of the system, and the resultant
instability, is forecast to remain relatively weak. For this reason,
any severe threat that develops on Thursday is expected to be
marginal.

...Broyles.. 03/14/2025

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