Severe Thunderstorm Watch until 11pm News by: Chief Meteorologist, Kevin Lighty Posted: Apr 28, 2020 / 05:27 PM CDT / Updated: Apr 28, 2020 / 07:59 PM CDT A severe thunderstorm watch is in effect until 11pm for parts of central Illinois. The main threats will be large hail and damaging winds with a small tornado threat. As the line pushes east it should weaken as it moves past I-57.