Warning sirens sounded in Elgin during a thunderstorm, causing confusion among some residents. The reason for the sirens and the protocol for their use are being clarified by officials, but there is uncertainty about whether the system will be changed, with some reports indicating no changes and others suggesting alterations to the system. The city's approach to issuing severe weather sirens appears to be under review, with conflicting reports on whether the system will be revised or has already been modified.