SPC 1200Z Day 1 Outlook

Day 1 Convective Outlook  
NWS Storm Prediction Center Norman OK
1136 PM CST Wed Jan 13 2021

Valid 141200Z - 151200Z

...NO THUNDERSTORM AREAS FORECAST...

...SUMMARY...
No thunderstorms are expected over the U.S. mainland today or
tonight.

...DISCUSSION...
An upper-level low will develop across the Upper Midwest today as an
upper-level trough digs south-southeastward across the Great Plains.
Ahead of this system, a shortwave ridge will move eastward across
the Ohio and Tennessee Valleys. At the surface, high pressure will
move across parts of the Southeast and Gulf of Mexico. This will
limit moisture return keeping a dry airmass in place across the U.S.
As a result, thunderstorm development is not expected today and
tonight.

..Broyles.. 01/14/2021

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