TORNADO WATCH

 URGENT - IMMEDIATE BROADCAST REQUESTED
   Tornado Watch Number 518
   NWS Storm Prediction Center Norman OK
   855 PM CST Sat Dec 17 2016

   The NWS Storm Prediction Center has issued a


* Tornado Watch for portions of 
     Northwestern Alabama
     Southeastern Arkansas
     Northeastern Louisiana
     West-central through northern Mississippi
     Southwestern and middle Tennessee

   * Effective this Saturday night and Sunday morning from 855 PM
     until 300 AM CST.

   * Primary threats include...
     A couple tornadoes possible
     Isolated damaging wind gusts to 70 mph possible

   SUMMARY...A band of strong to locally severe storms near an intense
   cold front will move across the watch area through much of the
   overnight hours, offering a risk of sporadic damaging winds and a
   couple of tornadoes possible.  Isolated severe storms still may form
   ahead of that band also.  See SPC mesoscale discussions 1893-1894
   for initial meteorological reasoning.

   The tornado watch area is approximately along and 55 statute miles
   either side of a line from 25 miles west northwest of Monroe LA to
   15 miles east of Nashville TN. For a complete depiction of the watch
   see the associated watch outline update (WOUS64 KWNS WOU8).

   PRECAUTIONARY/PREPAREDNESS ACTIONS...

   REMEMBER...A Tornado Watch means conditions are favorable for
   tornadoes and severe thunderstorms in and close to the watch
   area. Persons in these areas should be on the lookout for
   threatening weather conditions and listen for later statements
   and possible warnings.

   &&

   OTHER WATCH INFORMATION...This tornado watch replaces tornado
   watch number 517. Watch number 517 will not be in effect after
   855 PM CST. 

   AVIATION...Tornadoes and a few severe thunderstorms with hail
   surface and aloft to 1 inch. Extreme turbulence and surface wind
   gusts to 60 knots. A few cumulonimbi with maximum tops to 450. Mean
   storm motion vector 23035.

   ...Edwards