World Tsunami Awareness Day2026 · Date · History · Messages · Quotes
A/RES/70/203
About World Tsunami Awareness Day
World Tsunami Awareness Day is a United Nations observance held on 5 November to promote awareness, preparedness and disaster-risk reduction for tsunami hazards.
The day is especially relevant to coastal communities, but useful education also includes how warning systems, evacuation planning and international cooperation fit together.
Why World Tsunami Awareness Day matters
Tsunamis can cross coastlines and national boundaries, so preparedness depends on both technical warning systems and communities knowing how to respond to official alerts and local plans.
An awareness guide should not invent universal evacuation instructions for every coastline. Readers should use the routes, alerts and emergency guidance issued by competent local authorities.
History of World Tsunami Awareness Day
World Tsunami Awareness Day originated as a Japanese initiative; UNDRR records that Toshihiro Nikai first proposed the Day and that Japan played a leading role in its establishment.
The UN General Assembly designated 5 November as World Tsunami Awareness Day in December 2015 through resolution A/RES/70/203. The first observance took place on 5 November 2016.
The date was chosen in honour of the Japanese story “Inamura-no-hi,” associated with a community warning and evacuation during an 1854 tsunami. UNDRR facilitates the observance in collaboration with the United Nations system, while UNESCO-IOC has a separate technical role in tsunami warning and mitigation.
How the observance developed
This timeline uses documented milestones from reviewed sources. Missing stages are left out rather than guessed.
Japan (initiative first proposed by Toshihiro Nikai)
UNDRR describes World Tsunami Awareness Day as the brainchild of Japan and records that Toshihiro Nikai first proposed the Day; UNDRR also records that the General Assembly resolution was led by Japan and Chile.
United Nations General Assembly
UN General Assembly resolution A/RES/70/203
First documented observance
United Nations records identify 5 November 2016 as the first annual World Tsunami Awareness Day.
United Nations Office for Disaster Risk Reduction (UNDRR)
UNDRR’s official World Tsunami Awareness Day history states that UNDRR facilitates the observance in collaboration with the rest of the United Nations system.
What the evidence establishes
Confirmed institutional roles and milestones are shown first. Details that could not be established from the reviewed sources are listed separately below.
2 fields not established in reviewed sources
How to Observe World Tsunami Awareness Day
Find the official tsunami or coastal-hazard information for your area, if applicable, and learn where local evacuation maps are published.
Take part in a recognized drill or preparedness exercise organized by a school, workplace or emergency authority.
Teach the difference between hazard awareness, early warning and evacuation planning.
Use historical case studies to examine what helped or hindered effective warning and response.
Do not rely on generic social-media instructions in place of current local emergency guidance.
World Tsunami Awareness Day Facts
World Tsunami Awareness Day is observed on 5 November.
The UN General Assembly designated the day in 2015 through resolution A/RES/70/203.
The date honours the Japanese “Inamura-no-hi” story.
Preparedness advice must be localized because coastlines, warning systems and evacuation routes differ.
The initiative originated in Japan, with Toshihiro Nikai documented by UNDRR as its first proposer.
UNDRR facilitates the global observance in collaboration with the United Nations system.
UNESCO-IOC has a separate technical role in tsunami warning and mitigation systems.
World Tsunami Awareness Day Messages
Today, may World Tsunami Awareness Day strengthen attention to prevention, preparedness and the people working every day to keep communities safer.
On World Tsunami Awareness Day, may awareness lead to safer choices, stronger prevention and practical support for people and communities at risk.
May World Tsunami Awareness Day encourage people to learn the risks, follow trusted guidance and look out for one another.
World Tsunami Awareness Day Quotes
“Respecting the ocean means recognising its power.”
Topic and context
What this page does not assume
- Keep the source-defined country, community, organizer or institutional scope; do not silently broaden it.
- Do not treat the title alone as proof of government recognition or public-holiday status.
- Do not add a creator, founding story or origin claim unless the supporting evidence establishes it.
- Health Information Not Medical Advice.
Evidence & sources
Sources used across the guide are gathered here. Labels show how each source supports the page, and contextual references are kept separate from primary evidence.
UNESCO — World Tsunami Awareness Day (opens in a new tab)
United Nations Digital Library — A/RES/70/203 action record (opens in a new tab)
United Nations General Assembly — Tsunami Awareness Day background and Inamura-no-hi date rationale (opens in a new tab)
United Nations — Secretary-General message on first World Tsunami Awareness Day (opens in a new tab)
United Nations — World Tsunami Awareness Day (opens in a new tab)
United Nations Office for Disaster Risk Reduction — World Tsunami Awareness Day history (opens in a new tab)
United Nations Office for Disaster Risk Reduction — World Tsunami Awareness Day launch (opens in a new tab)
United Nations — List of International Days and Weeks (opens in a new tab)
Show 1 additional source reference
Understand it, compare it, then explore further
Start with the most common factual questions, then compare closely related observances and explore useful connections.
Frequently asked questions
When is World Tsunami Awareness Day?
5 November The documented recurrence rule is: 5 November.
Does World Tsunami Awareness Day fall on the same date every year?
Yes. It uses a fixed annual date unless stronger evidence changes the pattern.
Is World Tsunami Awareness Day an official public holiday?
The reviewed sources verify it within this scope: United Nations / international observance. That recognition does not by itself make it a statutory public holiday; the site only makes public-holiday claims when reliable evidence explicitly does so.
Who established or recognizes World Tsunami Awareness Day?
The reviewed sources identify United Nations General Assembly as the proclaiming or establishing body. The proposer or originator is recorded separately as Japan (initiative first proposed by Toshihiro Nikai). Current facilitation or coordination is recorded as United Nations Office for Disaster Risk Reduction (UNDRR).
Is World Tsunami Awareness Day international or country-specific?
The documented scope is international or global: United Nations / international observance. That does not mean every country treats the date as a public holiday or observes it in the same way.
How is this page verified?
The factual information is checked against reviewed sources, including the date pattern, scope and institutional history. This page was checked on 2026-09-05.
Why is World Tsunami Awareness Day on 5 November?
The date was chosen in honour of the Japanese “Inamura-no-hi” story, which is associated with warning villagers and moving them to safety during an 1854 tsunami.
When did the United Nations establish the day?
The UN General Assembly designated 5 November as World Tsunami Awareness Day in 2015 through resolution A/RES/70/203.
Does this guide replace local tsunami evacuation instructions?
No. Evacuation routes, alert systems and emergency instructions are location-specific and should come from competent local authorities.
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