Indonesia Uses Mosque Loudspeakers for Earthquake Warnings 2026

Indonesia is pioneering an innovative earthquake warning system that leverages the ubiquitous mosque loudspeakers to broadcast alerts, potentially saving countless lives in remote communities. Scientists working on this early warning system in earthquake-prone Indonesia have taken a spiritual path to designing a network of alarms that will reach even the remotest communities: they hope to use mosques to save lives. A five-year trial is assessing whether the loudspeakers used to broadcast the call to prayer can double up as warning klaxons for earthquakes.

"Every community has a mosque," says project lead Dr Inoue Hiroshi, speaking to the Guardian from Indonesia. The pilot scheme was the brainchild of the Japanese disaster scientist, who says he came up with the idea nearly two decades ago while researching deadly quakes in Sumatra, Indonesia. Inoue, of the Disaster Prevention Research Institute at Kyoto University in Japan, is working with the Indonesian government to assess whether the country could implement an early warning system similar to Japan's.

How the Mosque Loudspeaker Earthquake Warning System Works

The system integrates seismic sensors with the existing mosque loudspeaker infrastructure. When an earthquake is detected, a signal is sent to mosques in the affected area, triggering a distinct siren or voice message through the loudspeakers. This alerts residents, giving them precious seconds to evacuate or take cover.

Indonesia's disaster agency grapples with huge distances and hard-to-reach territories, but it has the benefit of an already established network of regularly serviced loudspeakers, something many other countries do not. With the largest Muslim population in the world, Indonesia has mosques in virtually every community, making this an ideal delivery mechanism.

Key Advantages of Using Mosque Loudspeakers

• Widespread coverage: Mosques are present even in remote villages, ensuring alerts reach isolated populations.
• Existing infrastructure: Loudspeakers are already installed and maintained for daily prayers, reducing setup costs.
• Cultural acceptance: Using a familiar and trusted institution increases community responsiveness.
• Speed: Loudspeakers can broadcast warnings instantly, faster than mobile phone alerts in areas with poor connectivity.

Comparing Earthquake Warning Systems: Japan vs. Indonesia

Japan's earthquake early warning system is considered one of the most advanced in the world, utilizing television, radio, and mobile phone alerts. Indonesia's approach adapts this concept to its unique cultural and geographical context. The table below compares key features.

Challenges and Considerations

Despite the promise, several challenges remain. Ensuring that the warning is distinct from the call to prayer is crucial to avoid confusion. Technical issues such as power outages and maintenance need addressing. Moreover, community education is vital so people know how to react when they hear the earthquake alarm.

The five-year trial will assess these factors and determine the feasibility of a nationwide rollout. If successful, this system could serve as a model for other earthquake-prone countries with similar religious infrastructures.

FAQ

This innovative approach highlights how cultural institutions can be repurposed for disaster risk reduction. As Indonesia continues to develop its early warning capabilities, the mosque loudspeaker system could become a lifeline for millions living in earthquake-prone regions.