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Rock County Sheriff's Office
Wednesday October 2nd, 2019 :: 09:47 a.m. CDT


Media Release-Outdoor Warning System: Siren Testing – October 9, 2019

Contact Person: Sergeant Kohler
(608) 758-8403
Date: 10/02/2019

The Outdoor Warning Siren System testing will occur Wednesday, October 9 at 12:05 pm. This will be the final siren test of 2019. The test signal will be 1 - 2 minutes in duration. Please tune in to your local radio stations or weather radios for all weather related information and instructions when the sirens are sounded.

In the event of an actual tornado warning, the sirens sound steadily for three to five minutes. This lengthy alert tone will indicate that citizens should immediately take shelter and tune in to local broadcasting stations or weather radios for further information.

Test Signal vs. Tornado Warning
• Test Signal: Steady tone lasting 1 – 2 minutes
• Tornado Warning: Steady tone lasting 3 – 5 minutes

Citizens are reminded that they should not call the Rock County 911 Communications Center or local radio stations for weather information. If citizens find that the siren in their area is not working properly, please contact the Rock County Sheriff’s Office – Emergency Management Bureau at 608-758-8440. For further information on the Outdoor Warning System, please visit

Siren testing will resume on April 1, 2020. The Outdoor Warning Siren System will remain active year-round for any necessary use of the sirens in the event of a tornado warning.

Troy J. Knudson

By: Sergeant Kohler 11519

Rock County Sheriff's Office
200 E USH 14
Janesville, WI 53545

Emergency: 9-1-1
Non-emergencies: 608-757-8000

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