Subj : DAY2SVR: Nws Storm Prediction Center Norman Ok
To   : wx-storm@lists.illinois.edu
From : COD Weather Processor
Date : Sat Dec 31 2022 17:02:18

ACUS02 KWNS 311702
SWODY2
SPC AC 311700

Day 2 Convective Outlook
NWS Storm Prediction Center Norman OK
1100 AM CST Sat Dec 31 2022

Valid 011200Z - 021200Z

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

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

....Synopsis and Discussion...
A large-scale upper trough will move quickly eastward across much of
the western CONUS on Sunday. A related surface low should develop
over the Great Basin and track eastward toward the central Rockies.
Occasional lightning flashes will be possible across the parts of
the Southwest as mid-level lapse rates steepen and strong ascent
occurs with enhanced deep-layer southwesterly flow. Weak instability
across this region is expected to limit the threat for organized
severe thunderstorms. Farther east, low-level moisture is forecast
to return northward across south/east TX into eastern OK and AR/LA
overnight Sunday into early Monday morning. A few lightning flashes
may occur with isolated thunderstorms in the strong low-level warm
advection regime, but convective coverage should be sparse owing to
a substantial cap.

...Gleason.. 12/31/2022

$$

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