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2. Civil defense siren - Wikipedia

   en.wikipedia.org/wiki/Civil_defense_siren

   Many warning sirens in Ontario, Manitoba, Saskatchewan and Alberta are now used as tornado warning instruments. Smithers, British Columbia uses an old air raid siren as a noon-day whistle. New Waterford, Nova Scotia uses a siren to signal the daily curfew.

3. Siren (alarm) - Wikipedia

   en.wikipedia.org/wiki/Siren_(alarm)

   Sirens are used on emergency service vehicles such as ambulances, police cars, and fire engines. Many fire sirens (used for summoning volunteer firefighters) serve double duty as tornado or civil defense sirens, alerting an entire community of impending danger. Most fire sirens are either mounted on the roof of a fire station or on a pole next ...

4. Tornado warning - Wikipedia

   en.wikipedia.org/wiki/Tornado_warning

   In some tornado-prone regions, tornado sirens, if present, are usually activated within the specified warning region or an entire municipality—varying in coverage based on if a local siren network maintains a sector-organized relay structure—to inform people that a tornado has been sighted or may be forming nearby. Because sirens are ...

5. Why is the tornado siren going off? What to know about ... - AOL

   www.aol.com/why-tornado-siren-going-off...

   A tornado warning issued by the National Weather Service or a tornado or funnel cloud reported by a trained spotter such as law enforcement, a fire department official or an emergency management ...

6. Hear an outdoor emergency siren in the county? Here's ... - AOL

   www.aol.com/hear-outdoor-emergency-siren-county...

   According to Al "Buddy" Kirsits, director of the county's Emergency Management Agency, the sirens are more than just tornado sirens. "They're an early warning outdoor siren system," he said Monday ...

7. Changes coming to outdoor warning sirens in Hillsdale County

   www.aol.com/changes-coming-outdoor-warning...

   HILLSDALE COUNTY — Hillsdale County’s Office of Emergency Management is making changes to traditional tornado watch and warning sirens.. Beginning March 4, a date planned to mark the beginning ...

8. Federal Signal Modulator - Wikipedia

   en.wikipedia.org/wiki/Federal_Signal_Modulator

   A Federal Signal Modulator siren in Bay Head, New Jersey. Federal Signal Modulators (also known as Modulator Speaker Arrays) are electronic warning devices produced by Federal Signal Corporation that are used to alert the public about tornadoes, severe weather, earthquakes, fires, lahars, tsunamis, or any other disaster. They are identified ...

9. Richland County to spent nearly $194,000 to upgrade tornado ...

   www.aol.com/richland-county-spent-nearly-194...

   Vasu Communications will upgrade controls for the county's 44 tornado warning sirens. American Rescue Plan Act dollars will pay for the project. Richland County to spent nearly $194,000 to upgrade ...