Subj : DAY3SVR: Nws Storm Prediction Center Norman Ok
To   : wx-storm@lists.illinois.edu
From : COD Weather Processor
Date : Tue Dec 10 2024 08:05:04

ACUS03 KWNS 100804
SWODY3
SPC AC 100804

Day 3 Convective Outlook
NWS Storm Prediction Center Norman OK
0204 AM CST Tue Dec 10 2024

Valid 121200Z - 131200Z

....NO THUNDERSTORM AREAS FORECAST...

....SUMMARY...
Thunderstorms are not expected on Thursday.

....Synopsis...
A mid/upper cyclone is forecast to be over the Ontario/Quebec
vicinity early Thursday morning, with cyclonic flow throughout its
base extending from the northern/central Plains through the
Northeast. This cyclone is expected to gradually shift eastward
through Quebec, with the associated cyclonic flow shifting northward
and eastward as well. Farther west, a low-amplitude shortwave trough
is expected to progress across the Great Basin into the Four Corners
region while enhanced mid-level westerly flow associated with it
spreads from southern CA across the Southwest.

At the surface, extensive ridging is expected from the northern
Plains into much of the eastern CONUS, promoting dry and stable
conditions. Modest lee troughing is anticipated across the High
Plains ahead of the approaching shortwave. However, scouring of the
low-level moisture by an antecedent frontal passage will limit
moisture advection, with stable conditions prevailing across the
central and southern Plains as well.

...Mosier.. 12/10/2024

$$

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