Per www.mauisirens.com there are 80 sirens on the island, and the map shows four right in Lahaina:
Regardless of what happened on the fireground / dispatch center / EOC a couple weeks ago, I fervently hope that the catastrophic losses in Lahaina will result in more effective use of similar resources in the future.
Siren quick facts
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Hawaii has the largest single integrated public safety outdoor siren warning system in the world.
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The all-hazard siren system can be used for a variety of both natural and human-caused events; including tsunamis, hurricanes, dam breaches, flooding, wildfires, volcanic eruptions, terrorist threats, hazardous material incidents, and more.
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The sirens output is 121 decibels and propagate with a manufacture radius of 3400ft. This range may vary due to environmental and surrounding physical conditions. The sirens are battery-powered and use a photovoltaic charging system.
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The sirens are one part of the larger Hawaii Statewide Alert and Warning System (SAWS) which includes FEMAās Integrated Public Alert & Warning System (IPAWS) which used both the Emergency Alert System (EAS) and Wireless Emergency Alerts (WEA) to alert the public.
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When a siren tone is heard other than a scheduled test, tune into local Radio/TV/Cable stations for emergency information and instructions by official authorities. If you are in a low laying area near the coastline; evacuate to high grounds, inland, or vertically to the 4th floor and higher of a concrete building. Alerts may also come in form of a Wireless Emergency Alert