| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | tornado sirens | Canada | In Canada, tornado sirens are widely used and regularly tested to warn of severe weather, particularly in tornado-prone areas. | 4 |
| 2 | tornado sirens | Australia | Tornado sirens are rare in Australia due to the infrequency of tornadoes. | 3 |
| 3 | tornado sirens | Coastal areas prone to typhoons | Tornado sirens are less commonly used in coastal areas prone to typhoons. | 1 |