Skip Navigation Links 
NOAA logo-Select to go to the NOAA homepage NOAA's National Weather Service   Select to go to the NWS homepage
Storm Prediction Center
navigation bar left  
  navigation bar end cap is the U.S. Government's official Web portal to all Federal, state and local government Web resources and services.

Mesoscale Discussion 816
< Previous MD         Next MD >
MD 816 graphic

   Mesoscale Discussion 0816
   NWS Storm Prediction Center Norman OK
   0102 PM CDT Tue May 23 2017

   Areas affected...Portions of southern/eastern Georgia and
   southern/central South Carolina

   Concerning...Tornado Watch 257...

   Valid 231802Z - 232000Z

   The severe weather threat for Tornado Watch 257 continues.

   SUMMARY...Storms will continue to advance east/northeast across
   Watch 257 this afternoon, with an attendant threat for a few
   tornadoes and damaging wind gusts. Conditions will likely remain
   favorable for these hazards through the late afternoon and evening
   hours, and a downstream tornado watch will likely be needed within
   the next 1-2 hours.

   DISCUSSION...Surface and mesoanalysis data indicate a weak boundary
   stretching eastward across south-central/southeastern Georgia and
   extending into southern South Carolina. Strong to occasionally
   severe storms have focused along and to the south of this boundary
   within a modestly heated warm sector. Surface observations depict
   pressure falls upwards of 1 mb/hr near the boundary, and weak low
   pressure currently over southeast Alabama will likely evolve
   east/northeast within this corridor through the afternoon and
   evening hours. As such, slight backing of low-level flow will likely
   occur along the boundary in advance of this low, resulting in some
   enhancement of storm-relative helicity. With modest mixed-layer
   buoyancy extending from southern Georgia into portions of South
   Carolina, this wind profile will likely maintain the potential for
   isolated damaging wind gusts and a couple tornadoes. Regional radar
   data have confirmed this ongoing potential, with a recent debris
   signature over eastern Crisp and western Wilcox Counties in Georgia.
   Downstream tornado watch issuance is likely within the next 1-2

   ..Picca.. 05/23/2017

   ...Please see for graphic product...


   LAT...LON   32218394 32608313 32788300 33308192 33838096 33888046
               33657978 33207936 32318048 31618143 30598304 30558416
               30898436 31338416 31598410 32218394 

Top/All Mesoscale Discussions/Forecast Products/Home
Weather Topics:
Watches, Mesoscale Discussions, Outlooks, Fire Weather, All Products, Contact Us

NOAA / National Weather Service
National Centers for Environmental Prediction
Storm Prediction Center
120 David L. Boren Blvd.
Norman, OK 73072 U.S.A.
Page last modified: May 23, 2017
Information Quality
Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities