Subj : DAY1SVR: Day 1 Convective Outlook
To   : wx-storm@lists.illinois.edu
From : COD Weather Processor
Date : Tue Dec 27 2022 00:58:16

ACUS01 KWNS 270058
SWODY1
SPC AC 270056

Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0656 PM CST Mon Dec 26 2022

Valid 270100Z - 271200Z

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

....SUMMARY...
Isolated thunderstorms may occur across parts of northern California
and southwest Oregon tonight.

....DISCUSSION...
An upper-level trough will move eastward into the Ohio and Tennessee
Valleys tonight. In the wake of the trough, mid-level flow will be
northwesterly in the Great Plains. In response, high pressure will
move southward into the Southern Plains. This will reinforce
northerly flow in the western Gulf Coast states, suppressing
moisture return. In the West, an upper-level trough will approach
the coast. Ahead of the system, strong large-scale ascent will move
inland tonight. This could support isolated thunderstorm development
in northern California and southwest Oregon. However, instability
will be very weak and a severe threat is not expected. Elsewhere
across the continental United States, thunderstorms are not forecast
to develop through tonight.

...Broyles.. 12/27/2022

$$

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