One EAS resource is outdoor warning sirens. Although most cannot distribute a message, they can alert people so that they turn on their NOAA All-Hazards Weather Radio, television, or AM/FM radio to get the emergency message. Teton County has outdoor warning sirens in the locations listed on the following interactive map.
Conservative Estimates of the Audible Ranges of the Sirens
Not all areas of the county are, or ever could be, covered by outdoor warning sirens. Our topography prevents these from being an effective warning system for outlying areas of the county, which is why they are found in more populated areas. Even if you live near a siren, they are not designed to penetrate buildings; they are intended to warn those who are outside.
Although some people may be able to hear these sirens inside of their homes, it may not be loud enough to wake you up if you were sleeping, for instance. For this reason, Teton County Emergency Management suggests that everyone, including those who live near the sirens, has a NOAA All-Hazards Weather Radio. This ensures that you will receive timely notifications, and the alert function is loud enough to wake most people up.
What the Sirens Sound Like
In Teton County, a 3 minute continuous wail means tune to local radio, TV, or NOAA All-Hazards Weather Radio for further information. When Teton County tests its siren system, it will use a 1 minute or less wail. Additionally, the sirens located at Station 1 downtown and in Teton Village are voice-capable, and can relay voice messages within a 1/2 mile radius.