
People around Japan are spreading news of the J-Alert System and the manual that explains what to do in the event of an armed attack.
In a country that’s constantly faced with the threat of natural disasters like earthquakes, tsunami, and typhoons, Japan knows the importance of being prepared.
It was only two years ago when the Tokyo Metroplitan Government sent out disaster preparedness manuals to its residents to inform them about what to do in the event of a disaster, with tips on how to prepare survival kits, advice about first-aid, and instructions on how to create things like emergency toilets and stoves using only minimal materials.
With the most advanced earthquake early-warning system in the world, residents can be notified of an impending tremor or tidal wave in advance, giving them time to evacuate and implement the safety plans set out in these types of manuals.
But what happens if the impending threat is not from the natural world but from an outside nation instead? That’s where the government’s J-Alert system steps in. Initially introduced in 2007, the J-Alert is designed to transmit information from the government to residents via email, outdoor speakers and administrative municipalities in the event of an incident.
In the past, the J-Alert system has been used when North Korea launched its ballistic missiles, providing information about the launches and their trajectories via email to those registered to receive the J-Alert via one of the country’s many disaster prevention information apps. However, in the event of a much more imminent threat to Japanese soil, a “national protection siren” will sound as part of more drastic measures to safeguard residents in an armed attack situation.
You can hear the sound of the siren below:
The Cabinet Secretariat Civil Protection Portal Site, which helps to run the J-Alert System, has put together a wide range of informative diagrams and manuals – in Japanese and English – outlining the steps that should be taken by residents in the event of an armed attack.
▼ Characteristics of “Armed Attack Situations” are pictured below.
One of the most insightful documents that can be found on the portal site is a manual called “Protecting Ourselves Against Armed Attacks and Terrorism“. According to the document, when an area under threat has been identified, the siren will sound from loudspeakers in that region and warnings will be broadcast over the speakers and on television and radio to alert residents.
Whether indoors or outdoors, certain procedures should be followed, with residents asked to remain calm at all times.
Evacuation procedures will vary depending on the type of armed attack taking place.
The manual goes on to provide information on what to do in the event of chemical warfare and nuclear explosions, along with first aid instructions and advice on what to take with you to an emergency shelter. Though it’s an unsettling read, the topics covered in the manual are all part of Japan’s Civil Protection Law, which is designed to protect the “lives, bodies, and property of the people from armed attack against Japan from the outside”.
With heightened tensions in the region at the moment, the J-Alert System is being widely discussed online and in local media. Many are taking the government’s advice to further increase their understanding about what to do if an armed attack against Japan should occur as “preparations for such a situation should be fully discussed in peacetime”.
To find out more about Japan’s Civil Protection Law and the systems in place to help safeguard residents, visit the Cabinet Secretariat Civil Protection Portal Site for more details.
Source: Net Lab
Featured Image: Cabinet Secretariat Civil Protection Portal Site
Insert images: Cabinet Secretariat Civil Protection Portal Site (1, 2)








North Korea launches missiles over Japan, activating J-Alert warning system
North Korea missile alert manga produced by Japanese government office
North Korea fires new missile over Japan, residents woken by government warning systems
Many Japanese workers told by workplaces during missile scare: “Please come to work as usual”
Studio Ghibli adds new Jiji’s baby plush toy to its anime merchandise range in Japan
Studio Ghibli releases new Kiki’s Delivery Service Jiji music box for anime fans
Over 1,400 cities in Japan see foreign population rise, total populations drop in new statistics
Starbucks Japan unveils new Kyoho grape drinks for a taste that’s quintessentially Japanese
7-Eleven Japan adds new doughnut-like tonkotsu ramen fried chicken to its hot food section
Stray cats almost became classified as an invasive species in Japan but the change was overturned
Japan’s new beer glass is designed to force you to drink…water [Video]
New Japanese vending machine at Shinkansen station sells cups of ice on platform
This beautiful rural Japan river is a great alternative to touristy summer retreats [Photos]
This awesome Japanese arcade chain has crane game coaches to help you win prizes
Pokémon Center Online designates first Pokémon items that will require Japanese ID card to buy
Japanese toilet aims to attract foreign tourists but not everybody is happy about it
Anime fan in Japan arrested for ordering and cancelling over 4.3 billion yen in anime merch
Starbucks Japan teams up with Traveler’s Company for new stationery and goods collection
Beautiful Totoro bonsai figure needs no watering, makes soothing rain showers whenever you want
End of a manga era as Weekly Shonen Jump’s circulation drops under one million
Kochia calling: Right now is a great off-season season to visit this beautiful Japanese park
7-Eleven Japan rethinks convenience store drinks with new Grilled Corn Chilled Soup Smoothie
Tokyo subway installing new ticket gates that don’t accept payment through Suica or other IC cards
Japan now has human refrigerators inspired by Japanese vending machines
Hatsune Miku collaborates with Hokusai’s art in new Vocaloid ukiyo-e illustration series [Pics]
New Shinkansen luggage drop-off system begins in Japan, making train travel even easier
Studio Ghibli releases anime T-shirts that pay homage to one of Hayao Miyazaki’s most personal films
Air-conditioned dress shirts arrive in Japan to save working professionals from sweltering heat
Japanese Shinkansen becomes an overnight hotel for three nights this summer
Cup Noodle unveils first-ever cold-water instant ramen in Japan
99-year-old woman rescued while attempting to climb Mt. Fuji
Japan announces sudden 400-percent increase in visa fees for foreigners entering the country
Japan’s human washing machines will go on sale to general public, demos to be held in Tokyo
Studio Ghibli has a new anime out, and there’s only one place in the world where you can see it
Starbucks Japan releases new drinkware and goods for Valentine’s Day
Starbucks Japan releases new sakura goods and drinkware for cherry blossom season 2026
Japan’s newest Shinkansen has no seats…or passengers [Video]
Japanese ninja certification exam attracts 131 candidates from Japan and abroad
Salomon releases Japan-exclusive Mt. Fuji hiking gear that doubles as an amazing souvenir
Put sesame oil in your coffee? Japanese maker says it’s the best way to start your day【Taste test】