Subj : DAY48SVR: Nws Storm Prediction Center Norman Ok
To   : wx-storm@lists.illinois.edu
From : COD Weather Processor
Date : Fri Oct 13 2023 08:55:09

ACUS48 KWNS 130855
SWOD48
SPC AC 130853

Day 4-8 Convective Outlook
NWS Storm Prediction Center Norman OK
0353 AM CDT Fri Oct 13 2023

Valid 161200Z - 211200Z

....DISCUSSION...
Surface high pressure, associated with dry, continental airmass, is
forecast to be in place over the Plains D4/Monday morning before
gradually shifting eastward into the MS Valley on D5/Tuesday, and
Southeast on D6/Wednesday. Limited low-level moisture associated
with this airmass will preclude thunderstorms over these areas.

A shortwave trough will likely move into the northern/central Plains
on D5/Tuesday or D6/Wednesday. However, low-level moisture will
remain well south of this feature along the Gulf Coast, limiting any
severe potential.

Moisture may begin to advect northward across the southern Plains
from D6/Wednesday through D7/Thursday, potentially interacting with
a front progressing eastward across the Plains. However, variability
within the guidance on frontal position and strength limits
predictability.

...Mosier.. 10/13/2023

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