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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