SPC 0700Z Day 2 Outlook
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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