There were reports of an unexplained boom heard and felt in the northeastern Illinois area, could they be connected to this radar anomaly Read about it here: Loud Mysterious Boom Sounds Shakes Homes and Rattles Nerves in Northeastern Illinois via sputniknews: A storm-like image appearing on radar has led inhabitants in the Midwestern region of the US to reexamine a mystery they thought they'd solved. Local reports indicate the radar anomaly came from a military aircraft, but it's unclear where the aircraft could have originated. A multicolored streak covering portions of radar in western Kentucky shocked the National Weather Service on Monday. The streak lingered for about 10 hours, even though there was absolutely no rain falling, reports Evansville Courier & Press. Not only was the chaff stream visible on radars for 10 hours, but it spanned some 50 miles, causing one self-described US Army Airborne veteran to wonder on Twitter