SPC 0830Z Day 3 Outlook

Day 3 Outlook Image

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

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