Rockford Scanner™: Severe Thunderstorm Watch



NWS Storm Prediction Center Norman OK
730 PM CDT Tue Aug 28 2018

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of
Northeastern Illinois, Extreme northwestern Indiana, and Lake Michigan

* Effective this Tuesday night from 730 PM until Midnight CDT.

* Primary threats include…
Scattered damaging wind gusts to 70 mph possible
Isolated large hail events to 1.5 inches in diameter possible

SUMMARY…

A well-developed bow echo (now crossing the Mississippi
River from Iowa into northwestern Illinois) should persist for
another few hours while moving across northern/northeastern
Illinois, immediately north of a residual outflow boundary. The
bowing segment will be accompanied by a continued threat for
damaging winds, and perhaps some hail with the strongest embedded
updrafts.

The severe thunderstorm watch area is approximately along and 45
statute miles north and south of a line from 60 miles southwest of
Rockford IL to 90 miles east northeast of Marseilles IL. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU9).

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.