

089 

WWUS20 KWNS 211546

SEL3

SPC WW 211546

LAZ000-TXZ000-212300-



URGENT - IMMEDIATE BROADCAST REQUESTED

Tornado Watch Number 3

NWS Storm Prediction Center Norman OK

950 AM CST Wed Feb 21 2018



The NWS Storm Prediction Center has issued a



* Tornado Watch for portions of

  Southwest into northeast Louisiana

  Extreme southeast Texas



* Effective this Wednesday morning and afternoon from 950 AM

  until 500 PM CST.



* Primary threats include...

  A couple tornadoes possible

  Isolated damaging wind gusts to 70 mph possible



SUMMARY...Clusters of thunderstorms will persist through the day

from extreme southeast Texas northeastward across Louisiana, in

advance of a slow-moving cold front.  The storm environment will be

favorable for a few supercells through the day, with an attendant

threat for a couple of tornadoes and isolated damaging winds.



The tornado watch area is approximately along and 55 statute miles

east and west of a line from 70 miles north northeast of Alexandria

LA to 5 miles south of Lake Charles LA. For a complete depiction of

the watch see the associated watch outline update (WOUS64 KWNS

WOU3).



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.



&&



AVIATION...Tornadoes and a few severe thunderstorms with hail

surface and aloft to 0.5 inches. Extreme turbulence and surface wind

gusts to 60 knots. A few cumulonimbi with maximum tops to 450. Mean

storm motion vector 22020.



...Thompson

