| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | tornado siren | Canada | Tornado sirens are widely installed and regularly tested in tornado-prone areas. | 1 |
| 2 | tornado sirens | Canada | Tornado sirens are commonly used and understood as a warning system for severe weather, particularly in tornado-prone regions. | 1 |
| 3 | weather sirens | Canada | Commonly used to warn of tornadoes and severe storms | 1 |
| 4 | weather sirens | Canada | Regularly tested with monthly drills to ensure functionality | 1 |