SPC AC 300754

   Day 3 Convective Outlook  
   NWS Storm Prediction Center Norman OK
   0154 AM CST Wed Dec 30 2020

   Valid 011200Z - 021200Z

   ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF
   THE SOUTHEAST AND CAROLINAS...

   ...SUMMARY...
   Thunderstorms associated with marginally severe wind gusts will be
   possible on Friday into Friday night from northern Florida to
   southern North Carolina.

   ...Southeast/Carolinas...
   An upper-level low will move northeastward into the mid Mississippi
   Valley on Friday as southwest mid-level flow remains from the
   Southeast into the Carolinas. By afternoon, a moist airmass will be
   located from eastern Alabama to South Carolina. This airmass is
   forecast to remain weakly unstable during the day. Thunderstorms are
   forecast to first develop in Alabama during the morning and then
   spread eastward across Georgia and South Carolina during the
   afternoon. Deep-layer shear of 40 to 50 kt across the moist sector
   will make conditions supportive of marginally severe storms. The
   best chance for a severe threat may develop in the early evening
   across parts of South Carolina as moisture advection increases
   surface dewpoints into the mid to upper 60s F. As a result, MLCAPE
   may peak in the 500 to 750 J/kg range across parts of southern and
   eastern South Carolina. The stronger storms could have an isolated
   wind damage threat. A marginal tornado threat will also be possible,
   associated with storms that remain discrete. The marginal severe
   threat may affect parts of southern North Carolina during the late
   evening and early overnight period.

   ..Broyles.. 12/30/2020

   CLICK TO GET WUUS03 PTSDY3 PRODUCT

   NOTE: THE NEXT DAY 3 OUTLOOK IS SCHEDULED BY 0830Z