Subj : DAY48SVR: Nws Storm Prediction Center Norman Ok
To   : wx-storm@lists.illinois.edu
From : COD Weather Processor
Date : Tue Jun 03 2025 08:52:56

ACUS48 KWNS 030852
SWOD48
SPC AC 030851

Day 4-8 Convective Outlook
NWS Storm Prediction Center Norman OK
0351 AM CDT Tue Jun 03 2025

Valid 061200Z - 111200Z

....DISCUSSION...
An active severe-weather pattern for repeated MCS development is
anticipated through this weekend, with more nebulous potential early
next week.

Medium-range guidance has converged to above-average consistency
with the large-scale pattern through this weekend. Enhanced zonal
mid-level flow within the southern stream should overlie a
seasonably rich and unstable air mass across the southern Great
Plains to the Deep South. Initial signal for south-central High
Plains nocturnal MCS development spreading east-southeast onto the
lower plains is evident late D3 and this will probably repeat on
D4/Friday night and perhaps on D5/Saturday night. This should
subside as a northern-stream upper trough amplifies into the
north-central states.

Remnant MCVs should focus downstream diurnal thunderstorm
development each afternoon through at least D6/Sunday. Given the
buoyancy/shear parameter space, sufficient confidence exists for
highlighting a scattered severe-storm threat on D4-5. Damaging winds
appear to be the dominant hazard in this pattern. An additional area
on D6 is plausible in later outlooks somewhere in the Deep South and
Gulf Coast States. For D7-8, severe potential is nebulous, but may
be tied to the evolution of the north-central states trough.

...Grams.. 06/03/2025

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