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070 

WWUS20 KWNS 190206

SEL2

SPC WW 190206

LAZ000-TXZ000-190600-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 12

NWS Storm Prediction Center Norman OK

910 PM CDT Sun Mar 18 2018



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Central and southwest Louisiana

  Extreme southeast Texas



* Effective this Sunday night and Monday morning from 910 PM

  until 100 AM CDT.



* Primary threats include...

  Scattered large hail and isolated very large hail events to 2

    inches in diameter possible

  Isolated damaging wind gusts to 70 mph possible

  A tornado or two possible



SUMMARY...Clusters of thunderstorms, some with embedded supercell

characteristics, will continue to spread eastward from southeast

Texas into Louisiana overnight.  The strongest storms will be

capable of producing large hail and damaging winds, and an isolated

tornado cannot be ruled out.



The severe thunderstorm watch area is approximately along and 65

statute miles east and west of a line from 30 miles north northeast

of Natchitoches LA to 60 miles south southwest of Fort Polk LA. For

a complete depiction of the watch see the associated watch outline

update (WOUS64 KWNS WOU2).



PRECAUTIONARY/PREPAREDNESS ACTIONS...



REMEMBER...A Severe Thunderstorm Watch means conditions are

favorable for 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. Severe thunderstorms can and occasionally do produce

tornadoes.



&&



OTHER WATCH INFORMATION...CONTINUE...WW 11...



AVIATION...A few severe thunderstorms with hail surface and aloft to

2 inches. Extreme turbulence and surface wind gusts to 60 knots. A

few cumulonimbi with maximum tops to 500. Mean storm motion vector

27035.



...Thompson

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