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Large Hail Possible Tonight, Severe Weather Likely Tomorrow with Strong Tornadoes Possible

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A significant severe weather event will be possible tomorrow afternoon and evening, including the risk of several strong tornadoes, large hail up to ping pong or baseball size, and damaging winds of 70 mph or more.

Before we get to this severe weather tomorrow, we could see some strong or severe storms after midnight into early tomorrow morning as a warm front lifts north through the area. In addition to heavy rain and localized flash flooding, large hail up to 2" in diameter will be possible with these storms.

This initial threat will likely end by sunrise tomorrow.

The more significant chance for severe storms will move through tomorrow afternoon and evening ahead of an advancing cold front. Storms will initially begin to form near the Mississippi River during the mid-afternoon hours, and then quickly move east into our area during the late afternoon and early evening.

Storms could move to the east or northeast as quickly as 50-60 mph tomorrow.

Individual, discrete supercell thunderstorms will be possible. Given ample wind shear, these storms will have the ability to rotate and produce strong tornadoes.

The best window for any severe storms tomorrow afternoon will be from 3 PM to 8 PM.

Here's what radar might look like tomorrow afternoon and evening.

By the time these storms will be approaching I-57, they will likely be congealing into a line, instead of individual storms.

As I stated above, we will have a high risk for tornadoes tomorrow. Some of these may be strong, including the possibility of long-track tornadoes that will stay on the ground continuously for miles.

In addition to the tornado threat, large hail up to ping pong or baseball size and damaging wind gusts up to 70 mph.

Make sure that you have a severe weather plan for tomorrow, which includes a way to get any warnings that may be issued. A NOAA Weather Radio is the best source for that, and our Heart of Illinois ABC app is a great secondary source. You'll also be able to track storms tomorrow on our app with interactive radar.

We will continue to keep you updated with the latest severe weather information on our newscasts, as well as our social media pages and website.

Brian Walder

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