What’s a siren ‘growl test’? This is why you may hear one in Hennepin County.
- Posted on July 1, 2026
- By Star Tribune
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- 1 min read
What’s a siren ‘growl test’? This is why you may hear one in Hennepin County.
The tests are part of a siren upgrade that will give the county more precise control over where sirens sound in an emergency.
