SPC 0700Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1219 AM CST Sat Dec 19 2020 Valid 201200Z - 211200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms are possible from the central Gulf Coast through Florida on Sunday. ...Synopsis... Two shortwave troughs are forecast to be embedded within the broad upper troughing expected to be in place across the central and eastern CONUS on Sunday morning. Lead shortwave initially extending from the middle OH Valley into GA will continue northeastward off the northern Mid-Atlantic/southern New England Coast. The second shortwave will likely begin the period extending from the central Plains into the southern High Plains. Expectation is for this shortwave to quickly progress southeastward through the mid/lower MS Valley and Southeast. Surface low forecast to start the period just off the southeast LA coast is expected to track eastward along the central and northeastern Gulf Coast before moving across northern FL late. Given the expected path of this low, inland penetration of the warm sector will be minimal. A few lightning flashes are possible amid the weak buoyancy and modest ascent near the surface low and along the attendant cold front, both along the central Gulf Coast, southern GA, and the FL Panhandle. Strong flow aloft will spread across the FL Peninsula, with the resulting vertical shear strong enough to support organized updrafts. However, warm temperatures aloft and modest low-level moisture will limit buoyancy. The current expectation is for predominantly transient and shallow updrafts along and ahead of the front as it moves over the central and southern FL Peninsula. ..Mosier.. 12/19/2020
There’s more click here.