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WWUS20 KWNS 172029

SEL0

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KYZ000-NCZ000-TNZ000-VAZ000-WVZ000-180400-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 10

NWS Storm Prediction Center Norman OK

430 PM EDT Sat Mar 17 2018



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Central and Eastern Kentucky

  Far Western North Carolina

  Northern and Eastern Tennessee

  Far Western Virginia

  Far Southern West Virginia



* Effective this Saturday afternoon from 430 PM until Midnight

  EDT.



* Primary threats include...

  Scattered large hail likely with isolated very large hail events

    to 2 inches in diameter possible

  Scattered damaging wind gusts to 70 mph possible



SUMMARY...Clusters of storms including supercells will continue to

increase through late afternoon especially across central/eastern

Kentucky, with somewhat more isolated development expected southward

into Tennessee. Bouts of severe hail will be common with the most

intense storms, while damaging winds can also be expected,

especially if a semi-organized linear system evolves by early

evening toward the spine of the Appalachian Mountains.



The severe thunderstorm watch area is approximately along and 65

statute miles north and south of a line from 75 miles west of London

KY to 35 miles east northeast of Bristol TN. For a complete

depiction of the watch see the associated watch outline update

(WOUS64 KWNS WOU0).



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 9...



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 450. Mean storm motion vector

28030.



...Guyer

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