

686 

WWUS20 KWNS 290006

SEL0

SPC WW 290006

INZ000-KYZ000-OHZ000-290600-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 170

NWS Storm Prediction Center Norman OK

810 PM EDT Fri Apr 28 2017



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Southeast Indiana

  Extreme north central Kentucky

  Southwest Ohio



* Effective this Friday night and Saturday morning from 810 PM

  until 200 AM EDT.



* Primary threats include...

  Isolated very large hail events to 2 inches in diameter possible

  Isolated damaging wind gusts to 70 mph possible



SUMMARY...Clusters of slightly elevated storms, with some supercell

structures, will likely persist and spread eastward from Indiana

into Ohio through early tonight.  The strongest storms will be

capable of producing large hail and damaging winds.



The severe thunderstorm watch area is approximately along and 30

statute miles north and south of a line from 115 miles west of

Cincinnati OH to 85 miles east of Cincinnati OH. 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.



&&



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

