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SPC Dec 18, 2023 1730 UTC Day 2 Convective Outlook

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SPC 1730Z Day 2 Outlook
Day 2 Outlook Image
Day 2 Convective Outlook  
NWS Storm Prediction Center Norman OK
1106 AM CST Mon Dec 18 2023

Valid 191200Z - 201200Z


Severe thunderstorms are not expected on Tuesday.


An upper trough over the eastern U.S. will move offshore the
Atlantic coast on Tuesday. In its wake, upper ridging will envelop
much of the CONUS. Meanwhile, another upper trough/closed low over
the eastern Pacific will approach the CA coast by Wednesday morning.
Strong surface high pressure building over much of the eastern half
of the CONUS will result in stable conditions. Southwesterly flow
aloft ahead of the Pacific upper low will maintain a stream of
midlevel moisture into central/northern CA. A few deeper convective
elements may support isolated lightning flashes along the coast and
into the valleys of central/northern CA, especially during the
overnight into early Wednesday morning hours. Severe storms are not

..Leitman.. 12/18/2023

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