SPC 0700Z Day 2 Outlook

Day 2 Outlook Image

Day 2 Convective Outlook  
NWS Storm Prediction Center Norman OK
1135 PM CST Fri Dec 04 2020

Valid 061200Z - 071200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Isolated thunderstorms are possible across southern Florida Sunday
night into early Monday morning.

...Synopsis...

Surface high pressure will bring mainly dry and stable conditions to
most of the CONUS on Sunday. The exception will be across southern
Florida late in the period, where isolated to scattered
thunderstorms are possible. An upper low over the southern Plains is
forecast to become an open wave as it merges with another trough
developing southeastward across the Midwest/Mid-South vicinity
during the evening, and continue eastward overnight. This will bring
increasing southwesterly deep layer flow across the Gulf of Mexico
and southeastern states. 

At the surface, a weak low over the western Gulf will shift eastward
through the period and be located offshore the southwestern FL coast
by Monday morning. Boundary layer moisture will increase across
southern Florida overnight in conjunction with strengthening
effective shear. Isolated thunderstorms are expected across the
southern Peninsula after 06z, and more likely by around 09z. Weak
instability and poor lapse rates should limit severe potential,
though a strong wind gust or two can not be ruled out.

..Leitman.. 12/05/2020

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