2025 8 11 Work Session Packet website

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FIRE DEPARTMENT 
 
 
TO:        Deb Wallace, City Manager 
        Mike Keith, Finance Director 
FROM:        Brandon Ainsworth, Fire Chief   
DATE:        May 9, 2024 
SUBJECT:    Severe Weather tornado sirens  
 
As it was requested by the City Council, I have done some  research into tornado sirens for the city 
limits of Athens.   Tornado Sirens, often referred to weather sirens, are a critical part of emergency 
warning systems, especially in areas prone to tornadoes. Athens and McMinn County aren’t 
frequently prone to tornadoes as often as other areas  in middle and west Tennessee . We generally 
see severe thunderstorms capable of producing tornadic activity. 
 
Purpose and Functioning: 
1. Warning: The primary purpose of tornado sirens is to warn people who are outdoors that a 
tornado is imminent, urging them to seek shelter indoors immediately. 
2. Activation: Tornado sirens are typically activated by the fire department or local emergency 
management when a tornado warning is issued by the National Weather Service (NWS) or 
when a tornado is spotted by reliable sources (like storm spotters or law enforcement).  These 
systems are most often set up to automatically activate when the warning is issued. 
3. Sound: The sound of a tornado siren is unmistakable. It is usually a loud, wailing tone that 
oscillates in pitch. Most systems are designed to be heard outdoors to alert those who may 
not have immediate access to other forms of communication. 
Testing and Maintenance: 
• Tornado sirens are tested regularly to ensure they are working correctly. These tests are often 
conducted on a specific day of the week at a designated time and usually emit a shorter or 
different tone to distinguish from an actual tornado alert. 
• Typically, routine maintenance and inspections are performed annually. 
Limitations: 
1. Range: The sound range can be limited, depending on the siren's power and the local 
geography. People indoors or in noisy environments most likely will not hear the siren. Athens 
would require several sirens to cover the whole city. 
2. False Sense of Security : People might rely solely on sirens for warnings, ignoring other 
notification systems like weather apps, radios, or television, which can provide more 
comprehensive information.  
 
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