

885 

WWUS20 KWNS 180351

SEL9

SPC WW 180351

ILZ000-INZ000-MOZ000-181100-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 349

NWS Storm Prediction Center Norman OK

1055 PM CDT Sat Jun 17 2017



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  South-central Illinois

  North-central Indiana

  Eastern Missouri



* Effective this Saturday night and Sunday morning from 1055 PM

  until 600 AM CDT.



* Primary threats include...

  Scattered damaging wind gusts to 70 mph possible

  Isolated large hail events to 1.5 inches in diameter possible

  A tornado or two possible



SUMMARY...Multiple clusters of storms will continue to steadily move

east-southeastward across eastern Missouri, south-central Illinois,

and north-central Indiana through the overnight hours. Isolated

instances of damaging winds will be the primary concern.



The severe thunderstorm watch area is approximately along and 40

statute miles north and south of a line from 10 miles west southwest

of Columbia MO to 65 miles northeast of Indianapolis IN. For a

complete depiction of the watch see the associated watch outline

update (WOUS64 KWNS WOU9).



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 345...WW 346...WW

347...WW 348...



AVIATION...A few severe thunderstorms with hail surface and aloft to

1.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A

few cumulonimbi with maximum tops to 600. Mean storm motion vector

30040.



...Guyer

