If you hear a tornado siren, treat it as a warning for severe weather in your area. These systems are typically intended to alert people outdoors.

• Move indoors promptly and go to a small, interior space on the lowest level, away from windows.
• Get details from official sources like local authorities, broadcast media, or a weather radio.
• Avoid relying on sirens alone; they may not be audible indoors or during loud activities.
• Some communities schedule tests, but it’s wise to act first and confirm through official updates.

Local practices vary, so follow your community’s guidance whenever possible.

Siren duration and tone patterns aren’t standardized nationwide, so a “three‑minute” sound can mean different things depending on your community’s policy.

• In some areas, a multi‑minute steady tone may indicate a tornado warning; in others, it could be a routine test.
• Many locations publish siren test schedules (often monthly at a set day and time).
• For accurate information, check your local emergency management website or public safety channels.
• If you’re unsure, it’s advisable to seek shelter and verify the situation through official sources.

Understanding your local signaling plan can help you respond more confidently and quickly.

Many communities that deploy outdoor warning systems use high‑output sirens designed to reach people who are outdoors, not to penetrate every building. Activation policies and tones vary by location.

• Public sirens are often paired with alerts on phones, broadcast media, and weather radios for layered notifications.
• On private property, you’ll see options like indoor alarms, strobe‑and‑siren combos, and electric or hand‑crank horns for on‑site alerts.
• Choose equipment based on where you need audibility, how you’ll power it, and how it will be triggered.

Check local guidance to learn how public sirens are used in your specific area.

Placement has a big impact on how far a siren’s sound carries.

• Mount it high and unobstructed; elevated, open locations help sound travel more consistently.
• Indoors, position near central hallways or stairwells rather than inside closets or behind heavy drapes.
• Outdoors, use weather‑rated units and solid mounts; avoid tight corners and low overhangs that can block or reflect sound.
• Large or noisy areas may benefit from multiple units or adding a strobe for visual notification.
• Do a brief daytime test, walk the area, and adjust placement as needed while respecting local noise rules.

You can find compatible mounting hardware and alert accessories in our Emergency Prep section online.

Loudness is listed in decibels (dB) at a specified distance, and models vary widely.

• For smaller indoor spaces, look for a level that’s clearly audible without being uncomfortable; check the listed dB and available tone patterns.
• Industrial and outdoor‑style units may list around 110–140 dB at the source, which can carry farther but may be overwhelming up close.
• Consider your layout, typical background noise, and whether a strobe is helpful for visual notification.
• If connecting to an alarm panel, match power and compatibility requirements.

Brief tests, protective hearing practices nearby, and thoughtful placement can help you dial in an appropriate setup.