Subj : DAY1SVR: Day 1 Convective Outlook
To   : wx-storm@lists.illinois.edu
From : COD Weather Processor
Date : Thu Dec 19 2024 12:37:46

ACUS01 KWNS 191237
SWODY1
SPC AC 191236

Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0636 AM CST Thu Dec 19 2024

Valid 191300Z - 201200Z

....NO THUNDERSTORM AREAS FORECAST...

....SUMMARY...
Thunderstorms are not expected through tonight.

....Synopsis/Discussion...
The upper-tropospheric pattern is evolving back to an eastern mean
trough and western ridge for a few days, as a series of shortwave
troughs dig southeastward from the northern/central Plains and
upstream parts of western/central Canada.  Low-level cold frontal
passage related to the eastern troughing will render the airmass
east of the Rockies too dry and/or stable for thunderstorms over
land for the rest of this period.  Meanwhile, ridging aloft and lack
of greater moisture/instability will preclude thunder in the West.

...Edwards/Goss.. 12/19/2024

$$

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