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Mesoscale Discussion 121
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   Mesoscale Discussion 0121
   NWS Storm Prediction Center Norman OK
   0319 PM CST Sun Jan 22 2017

   Areas affected...Portions of southern GA and northern FL

   Concerning...Tornado Watch 21...

   Valid 222119Z - 222245Z

   The severe weather threat for Tornado Watch 21 continues.

   SUMMARY...A line of potentially tornadic supercells will continue
   tracking eastward around 40-50 kt into the late afternoon hours.
   Long-track, fast-moving, strong tornadoes will be possible.

   DISCUSSION...A line of discrete/semi-discrete supercells and
   supercell clusters extending from southern GA to eastern portions of
   the FL Panhandle will continue spreading eastward around 40-50 kt.
   Approximate times of arrival of this line are depicted in the
   accompanying graphical product. Very strong wind fields accompanying
   a rapidly deepening cyclone over east-central AL will continue to
   support long, curved hodographs. As southerly mass fluxes east of
   the cyclone continue to support the northward advance of a
   precipitation-enhanced boundary across southern GA -- with moderate
   instability south of this boundary -- the supercell-tornado risk
   should continue to develop northward across parts of southern GA.
   The potential for strong, long-track, fast-moving tornadoes will

   ..Cohen.. 01/22/2017


   LAT...LON   30888355 32138337 32368265 31258205 29638231 29288275
               29358331 29998368 30888355 

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