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704 

WWUS20 KWNS 210109

SEL6

SPC WW 210109

ILZ000-MOZ000-210600-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 296

NWS Storm Prediction Center Norman OK

810 PM CDT Sun Jun 20 2021



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  West-Central/Northern Illinois

  Northeast Missouri



* Effective this Sunday night and Monday morning from 810 PM

  until 100 AM CDT.



* Primary threats include...

  Scattered large hail likely with isolated very large hail events

    to 2 inches in diameter possible

  Scattered damaging wind gusts to 70 mph likely

  A tornado or two possible



SUMMARY...Multiple corridors of severe thunderstorms are expected to

spread east-southeastward across the region this evening as the

atmosphere recovers/destabilizes in the wake of storms earlier

today. Damaging winds and isolated large hail are the primary

hazards as storms spread across west-central/northern Illinois and

northeast Missouri.



The severe thunderstorm watch area is approximately along and 55

statute miles east and west of a line from 20 miles north of

Rockford IL to 55 miles south southwest of Quincy IL. For a complete

depiction of the watch see the associated watch outline update

(WOUS64 KWNS WOU6).



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 293...WW 294...WW 295...



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 600. Mean storm motion vector

29030.



...Guyer

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