Subj : DAY1SVR: Day 1 Convective Outlook
To   : wx-storm@lists.illinois.edu
From : COD Weather Processor
Date : Sat Dec 21 2024 19:38:08

ACUS01 KWNS 211938
SWODY1
SPC AC 211936

Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0136 PM CST Sat Dec 21 2024

Valid 212000Z - 221200Z

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

....SUMMARY...
Isolated lightning flashes are possible through this afternoon along
the Oregon coast and vicinity.

....20z Update...
No changes are needed to the current D1 Convective Outlook. See
previous discussion for more information.

...Thornton/Thompson.. 12/21/2024

..PREV DISCUSSION... /ISSUED 1027 AM CST Sat Dec 21 2024/

....OR coast and vicinity through this afternoon...
A midlevel shortwave trough and associated thermal trough will move
inland over WA/OR through the day.  Isolated lightning flashes
occurred earlier this morning in northern CA with convection/minimal
buoyancy rooted above the 700 mb level, though this threat appears
to already be diminishing.  Through this afternoon, colder midlevel
temperatures and associated steeper low-midlevel lapse rates will
spread inland over coastal OR where isolated, low-topped
thunderstorms will be possible.

$$

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