Weather-Ready Nation Ambassador™ and the Weather-Ready Nation Ambassador™ logo are trademarks of the U.S. Department of Commerce, National Oceanic and Atmospheric Administration, used with permission. AES:ILLINOISTORNADOES ©2015 AccuWeather, Inc. Northern Illinois Tornadoes There are few sights in nature that are simultaneously more terrifying and awe-inspiring than a violent tornado. Yet, modern technology and weather science allow the in

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