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WWUS20 KWNS 281106

SEL1

SPC WW 281106

IAZ000-281600-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 271

NWS Storm Prediction Center Norman OK

610 AM CDT Tue May 28 2019



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Southern Iowa



* Effective this Tuesday morning from 610 AM until 1100 AM CDT.



* Primary threats include...

  Isolated damaging wind gusts to 70 mph possible

  Isolated large hail events to 1 inch in diameter possible



SUMMARY...A linearly organized band of storms will continue to

steadily move east-northeastward through the morning. Locally

damaging winds will be the primary concern, but some hail could also

occur



The severe thunderstorm watch area is approximately along and 40

statute miles north and south of a line from 60 miles west northwest

of Lamoni IA to 20 miles northeast of Ottumwa IA. 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.



&&



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

25040.



...Guyer

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