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WWUS20 KWNS 281952

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URGENT - IMMEDIATE BROADCAST REQUESTED

Tornado Watch Number 375

NWS Storm Prediction Center Norman OK

255 PM CDT Wed Jun 28 2017



The NWS Storm Prediction Center has issued a



* Tornado Watch for portions of

  Iowa

  Northwest Illinois

  Northern Missouri

  Southeast Nebraska

  Southwest Wisconsin



* Effective this Wednesday afternoon and evening from 255 PM

  until 1000 PM CDT.



* Primary threats include...

  A few tornadoes possible

  Scattered large hail and isolated very large hail events to 2.5

    inches in diameter possible

  Scattered damaging wind gusts to 70 mph possible



SUMMARY...In the wake of early-day storms, strong to severe

thunderstorm development should continue to occur with a steadily

moistening and destabilizing air mass. While large hail and damaging

winds should be the most common hazards, relatively strong low-level

shear and the influence of subtle residual boundaries could yield a

few tornadoes through the mid/late afternoon hours into this

evening.



The tornado watch area is approximately along and 105 statute miles

east and west of a line from 40 miles northeast of Waterloo IA to 40

miles southwest of Lamoni IA. For a complete depiction of the watch

see the associated watch outline update (WOUS64 KWNS WOU5).



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.



&&



AVIATION...Tornadoes and a few severe thunderstorms with hail

surface and aloft to 2.5 inches. Extreme turbulence and surface wind

gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean

storm motion vector 27030.



...Guyer

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