SPC 1730Z Day 2 Outlook

Day 2 Convective Outlook  
NWS Storm Prediction Center Norman OK
1122 AM CST Thu Nov 05 2020

Valid 061200Z - 071200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Severe thunderstorms are not expected across the U.S. mainland on
Friday.

...Discussion...
A high-amplitude, slowly progressive upper flow field is progged
over the U.S. for Friday, as an upper low digs southward across
California, resulting in expansion of cyclonic flow to encompass the
entirety of the West.  Farther east, ridging will prevail, though a
weak/complex disturbance over the Texas/Louisiana vicinity will
drift slowly eastward.

At the surface, high pressure will prevail over the southern and
eastern states.  In the West, a cold frontal advance across
California and Nevada is expected with time, while a baroclinic zone
shifts slowly southward across the Intermountain region and northern
Plains.

As the upper low advances southeastward near the West Coast, cool
air aloft/steep mid-level lapse rates may promote occasional
lightning flashes near coastal regions of northern and central
California.  Occasional lighting may also occur from the central
Gulf Coast region to the southern Atlantic Coast within
westward-moving convection through the period.

..Goss.. 11/05/2020

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