When the National Weather Service issues a Tornado Warning or a Severe Thunderstorm with damaging winds at or greater than 70 mph for Orland Park, the sirens are activated automatically to alert people who are outside of an impending threat.

Orland Park has 15 outdoor warning sirens located throughout the Village. All sirens are activated by the transmission of an RF signal with a tone alert. The signal is transmitted automatically when a National Weather Service Tornado Warning polygon is within the boundaries of Orland Park.

When sirens are activated a steady three-minute tone indicates a tornado has been sighted or strongly indicated on radar and/or a severe thunderstorm with 70 mph winds or greater is in the area. Seek shelter immediately and listen to radio or television for more information, if it is safe to do so. Do not call police, fire departments or news media.

Each siren is capable of covering about a one mile radius from its location. The sirens are designed to alert citizens who are outside but citizens inside buildings may hear the siren if they are close to the siren location.

Siren Testing

Please be advised that the Orland Park Emergency Management Agency will be testing the outdoor warning siren system on the first Tuesday of every month at 10 A.M.

It's Up To You!

Every year, many people are killed or seriously injured by tornadoes and/or high winds despite advance warning. Some do not hear the warning, while others received the warning but did not take action. This information, combined with timely severe weather watches and warnings, could save your life when severe weather threatens your area. After you have received the warning or observed threatening skies, you must make the decision to seek shelter before the storm arrives. It could be the most important decision you will ever make!