

415 

WWUS20 KWNS 222146

SEL5

SPC WW 222146

IAZ000-NEZ000-230200-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 305

NWS Storm Prediction Center Norman OK

450 PM CDT Tue Jun 22 2021



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  West-central Iowa

  East-central Nebraska



* Effective this Tuesday afternoon and evening from 450 PM until

  900 PM CDT.



* Primary threats include...

  Isolated very large hail events to 2 inches in diameter possible

  Isolated damaging wind gusts to 70 mph possible



SUMMARY...A couple supercells might evolve south-southeast out of a

storm cluster across northeast Nebraska through about sunset.



The severe thunderstorm watch area is approximately along and 40

statute miles north and south of a line from 40 miles north

northwest of Grand Island NE to 55 miles east southeast of Denison

IA. For a complete depiction of the watch see the associated watch

outline update (WOUS64 KWNS WOU5).



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

2 inches. Extreme turbulence and surface wind gusts to 60 knots. A

few cumulonimbi with maximum tops to 500. Mean storm motion vector

33030.



...Grams

