Mesoscale Discussion 1446
   NWS Storm Prediction Center Norman OK
   0725 PM CDT Thu Sep 13 2018

   Areas affected...Eastern NC

   Concerning...Tornado Watch 371...

   Valid 140025Z - 140230Z

   The severe weather threat for Tornado Watch 371 continues.

   SUMMARY...A brief tornado or two remains a threat across eastern
   North Carolina, mainly from the Outer Banks to the immediate coastal
   areas from this evening through tonight.  A new Tornado Watch is
   being considered, and will be coordinated with affected NWS Forecast
   Offices shortly.

   DISCUSSION...Trends during the last couple of hours in mosaic radar
   imagery attendant to Hurricane Florence indicated the northern
   extent of a tornado threat has been around KHSE, as any bands north
   of that area have been less organized.  Given the low-CAPE/high
   shear environment with the hurricane (sfc-1 km SRH of 400-750 m2/s2
   per objective analysis), a tornado threat is maintained as Florence
   advances toward the coast.  The spatial coverage of this tornado
   watch is expected to be smaller than the one issued during the day
   time.  This is due to 1) the aforementioned reason on the northern
   extent, 2) nocturnal cooling inland, limiting destabilization away
   from the higher-moisture-content air closer to the coast (surface
   dew points in the mid-upper 70s), and 3) similar westward trajectory
   of the tropical system, limiting additional counties added to the
   south, at this time.

   ..Peters/Guyer.. 09/14/2018

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

   ATTN...WFO...MHX...ILM...

   LAT...LON   33797730 34337789 34847773 35467694 35617642 35397558
               35157523 34777540 34267632 33967694 33797730