SPC AC 121711
Day 2 Convective Outlook
NWS Storm Prediction Center Norman OK
1111 AM CST Tue Dec 12 2017
Valid 131200Z - 141200Z
...NO THUNDERSTORM AREAS FORECAST...
Thunderstorms are not forecast across the contiguous states on
Broadly cyclonic flow aloft will continue across much of the U.S.
Wednesday, as an upper vortex over the Northeast rotates northward
into Canada, while farther west, short-wave troughing digs southward
across the Rockies. As a result, overall/broad long-wave troughing
will prevail -- east of the strong ridging residing in the vicinity
of coastal western North America.
With dry/stable continental air to remain in place east of the
Rockies, thunderstorms are not expected.
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NOTE: THE NEXT DAY 2 OUTLOOK IS SCHEDULED BY 0700Z