Sunday, December 18, 2016


   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

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