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WWUS20 KWNS 180733

SEL0

SPC WW 180733

ILZ000-INZ000-KYZ000-MOZ000-181400-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 350

NWS Storm Prediction Center Norman OK

235 AM CDT Sun Jun 18 2017



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Southern Illinois

  Southwestern Indiana

  Northwestern Kentucky

  Southeastern Missouri



* Effective this Sunday morning from 235 AM until 900 AM CDT.



* Primary threats include...

  Isolated damaging wind gusts to 70 mph possible



SUMMARY...A band of thunderstorms has become increasingly

well-organized over southwestern Illinois and eastern Missouri, with

measured winds approaching severe limits and some minor damage

reported near Sparta IL.  Activity is moving into a more moist and

unstable air mass in the lower Ohio/Wabash Valley regions.  The main

threat will be damaging gusts.



The severe thunderstorm watch area is approximately along and 70

statute miles east and west of a line from 15 miles south southeast

of Cape Girardeau MO to Bloomington IN. 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 347...WW 348...WW 349...



AVIATION...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

28035.



...Edwards

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