Storm Prediction Center Mesoscale Discussion 2110

   Mesoscale Discussion 2110
   NWS Storm Prediction Center Norman OK
   0636 AM CDT Thu Sep 26 2024

   Areas affected...Far Eastern Georgia...Southern and Central South
   Carolina

   Concerning...Severe potential...Watch possible 

   Valid 261136Z - 261330Z

   Probability of Watch Issuance...60 percent

   SUMMARY...An isolated tornado threat is expected to continue over
   the several hours from far eastern Georgia into southern and central
   South Carolina. Tornado watch issuance may become necessary.

   DISCUSSION...Hurricane Helene continues to move northward across the
   eastern Gulf of Mexico. Ahead of the system, onshore flow is present
   across much of the southern Atlantic Seaboard. Low-level convergence
   is maximized near the coast of Georgia and South Carolina where
   isolated storms have been generating over the last hour. RAP
   analysis shows weak instability near the coast, but also has an 850
   mb speed max located over eastern Georgia with wind speeds in the 30
   to 35 knot range. This is reflected on the Charleston, South
   Carolina WSR-88D VWP, which has 0-6 km shear near 40 knots, and 0-3
   km storm-relative helicity of near 170 m2/s2. This should be enough
   for tornado development associated with short-topped supercells. The
   tornado threat may spread northward into central South Carolina over
   the next few hours.

   ..Broyles/Guyer.. 09/26/2024

   ...Please see www.spc.noaa.gov for graphic product...

   ATTN...WFO...ILM...CHS...CAE...JAX...FFC...

   LAT...LON   32128025 31348099 31108137 31168179 31498203 32248236
               33108239 33658218 33998190 34098139 33958065 33678006
               33217979 32657982 32128025