Subj : DAY2SVR: Nws Storm Prediction Center Norman Ok
To   : wx-storm@lists.illinois.edu
From : COD Weather Processor
Date : Sun Oct 15 2023 05:33:51

ACUS02 KWNS 150533
SWODY2
SPC AC 150532

Day 2 Convective Outlook
NWS Storm Prediction Center Norman OK
1232 AM CDT Sun Oct 15 2023

Valid 161200Z - 171200Z

....NO SEVERE THUNDERSTORM AREAS FORECAST...

....SUMMARY...
Severe thunderstorms are not expected on Monday.

....Synopsis...
Extensive upper troughing, which is expected to extend from the
Canadian Maritime Provinces into the Lower MS Valley Monday morning,
will gradually shift eastward throughout the day as a pair of
shortwave troughs rotate through its western and southern
peripheries. By early Tuesday morning, this upper trough is expected
to extend from an upper low just off the northern Mid-Atlantic coast
into the central Gulf of Mexico.

Farther west, upper ridging will likely extend from the Lower CO
River Valley/southern CA into Alberta early in the period. This
ridging is also expected to shift eastward, in response to a strong
shortwave trough moving through the Pacific Northwest and northern
Rockies. Isolated thunderstorms are possible across coastal portions
of the Pacific Northwest Monday morning as the frontal band
associated with the lead shortwave moves through. Isolated
thunderstorms are also possible Monday afternoon/evening, as the
primary upper trough moves through. Strong mid/upper flow will
accompany these waves, but limited buoyancy and shallow updrafts
should limit the severe potential.

Conditions east of the Rockies will be dominated by expansive
surface ridging and its associated dry and stable airmass.

...Mosier.. 10/15/2023

$$

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