Subj : DAY2SVR: Nws Storm Prediction Center Norman Ok
To   : wx-storm@lists.illinois.edu
From : COD Weather Processor
Date : Thu Nov 17 2022 17:19:11

ACUS02 KWNS 171718
SWODY2
SPC AC 171717

Day 2 Convective Outlook
NWS Storm Prediction Center Norman OK
1117 AM CST Thu Nov 17 2022

Valid 181200Z - 191200Z

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

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

....Synopsis...
Broad upper troughing will be maintained across the CONUS on Friday
as a series of shortwave troughs move through the northern stream
from the northern Plains across the mid/upper MS Valley, Great
Lakes, and Northeast. Another shortwave trough is expected to become
displaced from the main branch as it moves southward across CA.

Persistent upper troughing will help maintain a stable, continental
air mass across the CONUS throughout the period. The aforementioned
series of shortwaves result in cooling mid-level temperatures above
the still-warm Lower Great Lakes. This will contribute to additional
steepening of low-level lapse rates, enhancing evolving bands of
sustained low-topped lake-effect convection. Thermodynamic profiles
may become conducive to charge separation and occasional lightning
flashes in the more vigorous activity.

Some moisture return is anticipated across deep South TX, with
surface cyclogenesis beginning just off the coast early Saturday
morning. The warm sector will likely remain offshore, but warm air
advection Friday night/Saturday morning will result in showers along
the coast, with a few embedded thunderstorms possible.

...Mosier.. 11/17/2022

$$

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