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Severe Thunderstorm Watch #89 includes the following southernmost Chicago area counties: Ford, Grundy, Livingston, LaSalle, and Iroquois
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Southeast Iowa
Western and Central Illinois
Eastern Missouri
* Effective this Wednesday afternoon and evening from 305 PM
until 900 PM CDT.
* Primary threats include...
Scattered damaging winds likely with isolated significant gusts
to 80 mph possible
Scattered large hail likely with isolated very large hail events
to 2.5 inches in diameter possible
A tornado or two possible
SUMMARY...Storms will quickly increase and intensify near/ahead of a
southeast-accelerating cold front. The environment is favorable for
initial supercells capable of large hail. Damaging winds will also
become an increasing concern by early evening as storms tend to
merge and organize into a fast-moving line particularly across
central/southeast Illinois.
The severe thunderstorm watch area is approximately along and 105
statute miles east and west of a line from 55 miles north of
Bloomington IL to 45 miles south southwest of Saint Louis MO.
