Subj : DAY2SVR: Nws Storm Prediction Center Norman Ok
To   : wx-storm@lists.illinois.edu
From : COD Weather Processor
Date : Mon Nov 27 2023 17:25:23

ACUS02 KWNS 271725
SWODY2
SPC AC 271723

Day 2 Convective Outlook
NWS Storm Prediction Center Norman OK
1123 AM CST Mon Nov 27 2023

Valid 281200Z - 291200Z

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

....SUMMARY...
Severe thunderstorms are not forecast for Tuesday across the
contiguous United States.

....Synopsis...
On Tuesday, a large but progressive upper trough will move from the
Great Lakes across the Northeast.  Cool air aloft over the Lower
Great Lakes may lead to a rogue lightning flash associated with
low-topped convection.  However, veering low-level winds and
decreasing surface convergence suggest less than 10% coverage on the
lee side of Lakes Erie and Ontario.

Farther west, a shortwave trough will affect the West Coast
overnight, with cool air aloft into northern CA by 12Z Wednesday.
Convergence along an associated cold front and large-scale ascent
may result in 100-200 J/kg MUCAPE beneath the upper trough, with
lighting possibly over land at the end of the Day 2 period.

...Smith.. 11/27/2023

$$

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