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WWUS20 KWNS 172039

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SPC WW 172039

IAZ000-ILZ000-MOZ000-180400-



URGENT - IMMEDIATE BROADCAST REQUESTED

Tornado Watch Number 234

NWS Storm Prediction Center Norman OK

340 PM CDT Wed May 17 2017



The NWS Storm Prediction Center has issued a



* Tornado Watch for portions of

  eastern Iowa

  northwestern Illinois

  far northeast Missouri



* Effective this Wednesday afternoon and evening from 340 PM

  until 1100 PM CDT.



* Primary threats include...

  A couple tornadoes possible

  Isolated very large hail events to 2 inches in diameter possible

  Isolated damaging wind gusts to 70 mph possible



SUMMARY...Strong/severe storms continue to develop/spread across

eastern Iowa, and are expected to move into parts of northern

Illinois over the next several hours.  Along with risk for large

hail and locally damaging winds, a couple of tornadoes will also be

possible.



The tornado watch area is approximately along and 65 statute miles

north and south of a line from 10 miles north northwest of Ottumwa

IA to 25 miles southeast of Rockford IL. For a complete depiction of

the watch see the associated watch outline update (WOUS64 KWNS

WOU4).



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 231...WW 232...WW 233...



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 22040.



...Goss

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