

553 

WWUS20 KWNS 210458

SEL0

SPC WW 210458

LAZ000-MSZ000-CWZ000-211300-



URGENT - IMMEDIATE BROADCAST REQUESTED

Tornado Watch Number 10

NWS Storm Prediction Center Norman OK

1100 PM CST Fri Jan 20 2017



The NWS Storm Prediction Center has issued a



* Tornado Watch for portions of

  Southeastern Louisiana

  Southern Mississippi

  Coastal Waters



* Effective this Friday night and Saturday morning from 1100 PM

  until 700 AM CST.



* Primary threats include...

  A few tornadoes likely

  Scattered damaging wind gusts to 70 mph possible

  Isolated very large hail events to 2 inches in diameter possible



SUMMARY...An expanding area of thunderstorms is expected to move

east-northeastward across this watch through the overnight hours,

into a favorably destabilizing and inland-spreading Gulf air mass.

Other, more isolated activity is possible ahead of the main complex

as well.  Forecast ingredients support all modes of severe weather

including a tornado threat.  See SPC mesoscale discussion 83 for

initial meteorological details.



The tornado watch area is approximately along and 100 statute miles

north and south of a line from 40 miles southwest of Baton Rouge LA

to 60 miles east southeast of Pine Belt MS. For a complete depiction

of the watch see the associated watch outline update (WOUS64 KWNS

WOU0).



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 9...



AVIATION...Tornadoes and 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 450. Mean

storm motion vector 25030.



...Edwards

