SPC Severe Thunderstorm Watch 294



WW 294 SEVERE TSTM IL IN MO LM 221835Z – 230200Z

WW 0294 Image

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 294
NWS Storm Prediction Center Norman OK
135 PM CDT Mon Jun 22 2020

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  Central and Northeast Illinois
  Northwest Indiana
  Eastern Missouri
  Lake Michigan

* Effective this Monday afternoon and evening from 135 PM until
  900 PM CDT.

* Primary threats include...
  Scattered damaging wind gusts to 70 mph possible
  Isolated large hail events to 1 inch in diameter possible

SUMMARY...Storms are expected to intensify within multiple pre-cold
frontal corridors across the region. While deep-layer winds are not
overly strong, a moist/unstable environment will support multicells
capable of wind damage and possibly some hail through the afternoon
and early evening.

The severe thunderstorm watch area is approximately along and 60
statute miles north and south of a line from 70 miles west southwest
of Springfield IL to 70 miles north northeast of Danville IL. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU4).

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
25020.

...Guyer

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