ARPSC Siren Test Information
With over 270 Early Weather Warning sirens throughout Oakland County residents of the County are provided a
tool to keep them informed of approaching severe weather even when they are outdoors and away from television
or radio media sources. The County's policy is to activate the warning sirens when a Tornado Warning or a Severe
Thunderstorm with forecast winds of 70 mph or more has been issued by the National Weather Service. When activated,
the sirens will sound for a period of approximately three minutes. Residents are advised get to a radio or television
to hear detailed information concerning the weather threat.
In order to ensure the functionality of the system's sirens, the ARPSC takes part in the first Saturday siren test by
deploying members to visually inspect and observe sirens during the test. Radio operators check and report on the
following items during the test.
- Activation for a full three minutes
- Continual, smooth rotation of the siren's horn while activated
- Full sound volume from the siren
- Damage to the siren's control box
- Encroachment of tree limbs or vegetation upon the control box or siren horn
In addition to the ARPSC visual inspection, the siren system also provides automated data metrics that are sent
to the Homeland Security Department.
Procedure for Participating
All Amateur Radio operators are encouraged to participate in the monthly siren test. To take part in a siren test check follow these steps:
- Select a siren you would like to observe
- Email the Sub-Net Control operator to confirm your selection (See Sub-net Map)
- Make sure your radio is programmed for the Sub-Net repeater
- Plan to arrive at your siren at least 20 minutes early
- Check in with your sub-net to let them know when you are in route to your siren and when you are on location. This confirms to the
Subnet operator that you remembered your siren assignment, arrived safely, have located the siren, and are in position, ready to go.
- Observe the items noted above during the test
- Report your results when net control performs a roll call of all operators
Our goal is to observe all in sirens in the County at least once per year. Therefore, we ask all operators to check
this website when selecting a siren to determine whether it has already been checked. (See Checked Sirens)