🎵 IRIS Night File
A quiet soundtrack for tonight’s investigation. Press play whenever you wish.
I am Iris.
Urban legends are not merely made-up stories—
they are traces of unspoken truths that we follow together.
Interlude: When Emergency Alerts Create Chaos
Imagine hearing an unexpected alarm from your smartphone.
The screen flashes red.
EMERGENCY ALERT.
You immediately stop what you are doing.
Is it an earthquake?
A tsunami?
A missile attack?
Emergency warning systems exist to protect human lives.
But what happens when one of those warnings is wrong?
And what happens when the authorities cannot correct the mistake quickly enough?
The answer is not hypothetical.
It has already happened.
Tonight, we examine how emergency warning systems have created confusion and fear—and what those incidents reveal about the information we trust.
Chapter One: Hawaii’s 38 Minutes of Terror
On January 13, 2018, at 8:07 a.m., residents and visitors across Hawaii received a terrifying warning.
A ballistic missile was supposedly approaching the islands.
The message instructed people to seek immediate shelter.
It also emphasized that the warning was not a drill.
At the time, tensions surrounding North Korea’s missile program were high.
People contacted their families, searched for shelter, and feared that a devastating attack was imminent.
But there was no missile.
The Hawaii Emergency Management Agency had mistakenly transmitted a real emergency alert during an internal exercise.
Officials confirmed within minutes that the warning was false.
At 8:20 a.m., the agency announced the mistake through social media.
However, the official correction through the emergency broadcast and wireless alert systems was not issued until 8:45 a.m.
Thirty-eight minutes had passed since the original warning.
The incident was not simply a story about pressing the wrong button.
It exposed serious weaknesses in emergency warning procedures, verification, and the ability to issue rapid corrections.
Chapter Two: Japan’s Earthquake Warning Problems
Japan has experienced different kinds of warning failures.
On January 5, 2018, two earthquakes occurred almost simultaneously.
One struck off the coast of Ibaraki Prefecture.
The other occurred in western Toyama Prefecture.
Japan’s earthquake warning system mistakenly processed the two events as a single earthquake.
This caused an overestimation of the expected shaking.
The Japan Meteorological Agency later explained the technical problem.
Another incident occurred on July 30, 2020.
An earthquake struck near Torishima, a remote island south of Japan.
The warning system incorrectly estimated its location and calculated a magnitude of 7.3.
As a result, earthquake warnings were issued across a large area of eastern and central Japan.
Yet no shaking of intensity 1 or higher was observed.
These incidents were different from Hawaii’s false missile alert.
Real earthquakes had occurred. The errors involved the estimated location, magnitude, or shaking intensity.
That distinction matters when investigating technical failures.
Chapter Three: How Emergency Alerts Actually Work
Japan uses a system known as J-Alert.
Its purpose is to rapidly distribute urgent information concerning ballistic missiles, earthquakes, tsunamis, and other serious threats.
However, J-Alert is not identical to the earthquake warning information itself.
The Japan Meteorological Agency produces earthquake warnings.
J-Alert is one of the mechanisms used to transmit urgent information to the public.
The American systems involved in the Hawaii incident were different again.
The Emergency Alert System, or EAS, distributes warnings through broadcast media.
Wireless Emergency Alerts, or WEA, deliver messages to compatible mobile devices.
These systems are designed to operate quickly.
But speed creates a difficult problem.
Warnings may have to be issued before all information can be fully verified.
Human operators, technical systems, and communication procedures must work together under severe time pressure.
A failure at any stage can create confusion.
That does not automatically mean that the warning was deliberately manipulated.
Claims of intentional interference require evidence beyond the existence of an error.
Chapter Four: The Danger of Losing Public Trust
Following the Hawaii incident, authorities reviewed their warning procedures and introduced additional safeguards.
Japan has also worked to improve its earthquake warning technology after previous overestimations.
But there is a deeper challenge.
Public trust.
When warning systems make mistakes, some people may begin ignoring future alerts.
They might assume that another warning is simply another false alarm.
But what if the next warning is real?
A society frightened by emergency alerts faces one danger. A society that no longer trusts emergency alerts may face an even greater one.
That is why accurate information, transparent investigations, and rapid correction procedures are essential.
People need to know not only that warnings can be issued quickly, but also that mistakes will be acknowledged and corrected.
Epilogue: Information Can Save Lives
No emergency warning system is perfect.
Human mistakes can occur.
Computer models can misinterpret incomplete data.
Communications may fail.
But those limitations do not mean that warnings should be ignored.
When an earthquake warning arrives, the priority is immediate personal safety.
Once the immediate danger has passed, official updates can help establish what actually happened.
Social media rumors alone should not determine whether a threat has ended.
Perhaps this is the most important lesson from these incidents.
Modern society depends on information arriving faster than ever before.
But speed is not enough.
Information must also be reliable, understandable, and correctable.
The real challenge is learning how to act quickly without abandoning the responsibility to verify.
A warning can save a life.
A mistake can create fear.
And the way authorities correct that mistake can determine whether people trust the next warning.
Next time—another fragment of truth we will trace together.
I will return to continue the telling.
📚 Sources & Verification Notes
01｜Hawaii Emergency Management Agency — False Missile Alert
Hawaii Emergency Management Agency / January 13, 2018 / Official state government statement
Documents the accidental transmission of a missile warning, the internal confirmation that no missile existed, and the timeline of public corrections. The agency identified human error as the cause.
02｜U.S. Senate — Hawaii False Missile Alert Hearing
United States Senate / 2018 / Congressional hearing record
Examines the false warning, the 38-minute delay before the official wireless correction, and the need for better verification and cancellation procedures. Provides testimony and institutional findings.
03｜Japan Meteorological Agency — January 2018 Earthquake Warning
Japan Meteorological Agency / January 18, 2018 / Official press conference record
Confirms that two nearly simultaneous earthquakes in Ibaraki and Toyama were mistakenly processed as a single event, causing an overestimation of the expected shaking. Source in Japanese.
04｜Japan Meteorological Agency — July 2020 Warning Error
Japan Meteorological Agency / July 30, 2020 / Official press release
Describes the incorrect earthquake location and magnitude estimation that triggered widespread earthquake warnings. No shaking of intensity 1 or greater was observed. Source in Japanese.
05｜Japan Meteorological Agency — Technical Improvements
Japan Meteorological Agency / Annual Report 2024 / Official technical review
Reviews the challenges of identifying separate seismic events and correctly estimating earthquake magnitude and location. Discusses improvements following earlier warning errors.
06｜Fire and Disaster Management Agency — J-Alert
Fire and Disaster Management Agency of Japan / Official public safety information
Explains Japan’s nationwide emergency alert distribution system, including information about missiles, earthquakes, and tsunamis. Distinguishes warning transmission from the production of earthquake forecasts.
07｜Japan Meteorological Agency — Earthquake Early Warning FAQ
Japan Meteorological Agency / Official disaster preparedness guidance
Explains how earthquake early warnings are issued, why prediction errors can occur, and how the public should respond. Source in Japanese.
🕒 Posting Time
November 12, 2026 · 23:00 JST
English public edition
🎵 IRIS FILE — “Is It Really True?”
Secretary Iris’s original theme. Follow the clues beyond the rumors.
📖 Further Reading
Why Did Japan Issue an Emergency Request? — The New Disaster Agency, Chiba Earthquake and CCS
Where Could Japan Be Drawn Into Conflict? — Japan’s Security Risk Map
What Happened on October 1? — A One-Month Fact Check
Why Do We Read Signs of the End? — Disasters, Numbers, Myths and War
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✉️ Share a Mystery with Iris
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