- Activation of Sirens - Tornado Warning
- Steady tone of 3-5 minutes.
- Immediately take shelter as a tornado warning has been issued for Rock County or a sighting of a funnel cloud has been reported.
- Please DO NOT call 911 to inquire about the siren.
- Tune to local radio stations.
- Beloit - WGEZ AM 1490
- Janesville - WCLO AM 1230 - or - WJVL FM 99.9
- There is NO "All Clear" signal.
- Rock County Outdoor Warning Siren System Testing
- April thru October
- First Wednesday of each month at 12:05 PM
- Steady tone of 2 minutes
- Sirens are NOT tested when inclement weather is being experienced within the County.
- Call to Report Non-Working Sirens
- Have your location and telephone number ready.
- Monday thru Friday
- Rock County Emergency Management (608) 758-8440
- Saturday and Sunday
- Rock County Communications Center (608) 757-2244
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