

323 

WWUS20 KWNS 111033

SEL7

SPC WW 111033

NEZ000-111600-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 257

NWS Storm Prediction Center Norman OK

535 AM CDT Fri Jun 11 2021



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Northeast Nebraska



* Effective this Friday morning from 535 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 line of storms is expected to develop southeastward

across northeast Nebraska through mid morning, with an accompanying

threat for isolated damaging winds and large hail.



The severe thunderstorm watch area is approximately along and 50

statute miles east and west of a line from 10 miles west northwest

of Yankton SD to 45 miles south southeast of Norfolk NE. For a

complete depiction of the watch see the associated watch outline

update (WOUS64 KWNS WOU7).



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 255...WW 256...



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 550. Mean storm motion vector

31025.



...Thompson

