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ACUS02 KWNS 131618
SPC AC 131617

Day 2 Convective Outlook  
NWS Storm Prediction Center Norman OK
1017 AM CST Sat Jan 13 2018

Valid 141200Z - 151200Z


The risk for thunderstorms appears negligible across the U.S.,
Sunday through Sunday night.

Models indicate that the mid/upper flow across much of North America
will remain amplified through this period.  Large-scale troughing
east of the Rockies will be maintained, with another significant
short wave trough forecast to dig across the central Canadian/U.S.
border area through much of the Upper Midwest and Missouri Valley,
accompanied by a reinforcing cold intrusion (colder than the ongoing
intrusion which has advanced east of the Atlantic Seaboard and
through much of the Gulf of Mexico).  

Sharp ridging is expected to hold across much of the West, but some
weakening and suppression of this feature appears possible, as a
strong upper jet noses across the eastern mid-latitude Pacific,
toward the Oregon/northern California coast.  This could be
accompanied by some low-level moistening, within a narrow plume
advecting into the vicinity of the coast by late Sunday night. 
However, the mid-level cold pool associated with troughing near the
leading edge of the jet is expected to remain offshore through and
beyond 12Z Monday, and generally stable conditions likely will be
maintained with negligible risk for thunderstorms.

..Kerr.. 01/13/2018