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WWUS20 KWNS 012302

SEL1

SPC WW 012302

IAZ000-ILZ000-WIZ000-020500-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 671

NWS Storm Prediction Center Norman OK

605 PM CDT Tue Oct 1 2019



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Eastern Iowa

  Northwest Illinois

  Southern Wisconsin



* Effective this Tuesday night from 605 PM until Midnight CDT.



* Primary threats include...

  Scattered large hail and isolated very large hail events to 2

    inches in diameter possible

  Isolated damaging wind gusts to 70 mph possible

  A tornado or two possible



SUMMARY...Strong to severe thunderstorms will continue to develop

near a front that extends generally southwest-northeast across the

region. The most common severe hazard should be hail, although

locally damaging winds will also be a concern, and a tornado cannot

be ruled out mainly near the frontal boundary.



The severe thunderstorm watch area is approximately along and 50

statute miles north and south of a line from 25 miles west northwest

of Cedar Rapids IA to 30 miles east northeast of Janesville WI. For

a complete depiction of the watch see the associated watch outline

update (WOUS64 KWNS WOU1).



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 670...



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 550. Mean storm motion vector

24035.



...Guyer

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