Subj : DAY1SVR: Day 1 Convective Outlook
To   : wx-storm@lists.illinois.edu
From : COD Weather Processor
Date : Mon Dec 04 2023 19:49:02

ACUS01 KWNS 041948
SWODY1
SPC AC 041947

Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0147 PM CST Mon Dec 04 2023

Valid 042000Z - 051200Z

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

....SUMMARY...
Severe thunderstorms are not expected through tonight.

....20Z Update...
The western half of the General Thunderstorm area in the Ohio Valley
was trimmed, considering large-scale ascent and instability is
shifting eastward with the primary shortwave trough. Elsewhere, the
forecast remains on track.

...Weinman/Dean.. 12/04/2023

..PREV DISCUSSION... /ISSUED 1014 AM CST Mon Dec 04 2023/

....KY and Vicinity...
A compact and fast-moving shortwave trough currently over western KY
will track eastward through the day into the central Appalachians.
This system resulted in a period of thunderstorm activity several
hours ago over MO/IL, and could continue to result in scattered
lightning flashes for a few more hours into this afternoon.  No
severe storms are expected.

Elsewhere, isolated lightning flashes are possible in a strong
onshore flow regime along the coast of northwest WA.

$$

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