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332 

WWUS20 KWNS 190306

SEL3

SPC WW 190306

IAZ000-ILZ000-MOZ000-NEZ000-191000-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 283

NWS Storm Prediction Center Norman OK

1005 PM CDT Fri Jun 18 2021



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Southern and Eastern Iowa

  Western Illinois

  Northern Missouri

  Southeast Nebraska



* Effective this Friday night and Saturday morning from 1005 PM

  until 500 AM CDT.



* Primary threats include...

  Scattered large hail likely with isolated very large hail events

    to 2.5 inches in diameter possible

  Scattered damaging wind gusts to 70 mph possible

  A tornado or two possible



SUMMARY...Multiple corridors of strong to severe storm development

are expected late this evening including across southern Iowa as

well as southeast Nebraska into northern Missouri. The strongest

storms will be capable of large hail. Damaging winds will also be a

possibility, particularly if a well-organized linear cluster evolves

through the early overnight hours as storms spread

east-southeastward across the region.



The severe thunderstorm watch area is approximately along and 65

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

Shenandoah IA to 30 miles east southeast of Burlington IA. For a

complete depiction of the watch see the associated watch outline

update (WOUS64 KWNS WOU3).



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 280...WW 281...WW 282...



AVIATION...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 600. Mean storm motion vector

29025.



...Guyer

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