

160 

WWUS20 KWNS 271526

SEL8

SPC WW 271526

LAZ000-MSZ000-CWZ000-280000-



URGENT - IMMEDIATE BROADCAST REQUESTED

Tornado Watch Number 448

NWS Storm Prediction Center Norman OK

930 AM CST Thu Dec 27 2018



The NWS Storm Prediction Center has issued a



* Tornado Watch for portions of

  Eastern and southern Louisiana

  Southern Mississippi

  Coastal Waters



* Effective this Thursday morning and evening from 930 AM until

  600 PM CST.



* Primary threats include...

  A couple tornadoes possible

  Isolated damaging wind gusts to 70 mph possible



SUMMARY...A squall line will continue steadily east-northeastward

today across eastern/southern Louisiana into parts of

southern/central Mississippi. Although instability is not robust,

very strong deep-layer/low-level shear will be supportive of

embedded bowing segments and embedded mesovortices capable of wind

damage and some tornado risk.



The tornado watch area is approximately along and 95 statute miles

north and south of a line from 40 miles north of Lafayette LA to 60

miles east northeast of Mc Comb MS. 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...CONTINUE...WW 447...



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 500. Mean

storm motion vector 23035.



...Guyer

