What is the difference between Shindo and magnitude?

Magnitude estimates the total energy released by an earthquake. Shindo (JMA seismic intensity) describes how strongly the ground shook at a specific place. The same quake can register different Shindo values in different cities.

What Shindo level is dangerous for travelers?

Shindo 4 and above is widely felt and can rattle furniture. Shindo 5-lower and higher can make standing difficult and may damage older buildings. Treat any strong shaking seriously and follow Drop, Cover, and Hold On.

Where should I check official Japan earthquake alerts?

Use the Japan Meteorological Agency (JMA) and NHK World for official multi-language emergency information. Japanist’s tracker is for awareness and education, not official alerts.

What is the Shindo scale in Japan?

Japan reports earthquake intensity with the JMA Seismic Intensity Scale, commonly called Shindo (震度). Unlike magnitude, Shindo answers the traveler’s question: how hard did it shake here?

Shindo levels at a glance

0–2: Imperceptible to lightly felt by some people indoors.
3–4: Widely felt; hanging objects swing; some people may be startled.
5-lower / 5-upper: Walking is difficult; unsecured furniture may move or fall.
6-lower / 6-upper: Impossible to stay standing without support; heavy damage risk to vulnerable structures.
7: Extreme shaking; people thrown; severe damage possible.

What to do during shaking

Drop, Cover, and Hold On under sturdy furniture.
Stay away from windows, glass, and tall unsecured shelves.
If outdoors, move to an open area away from façades and power lines.
After shaking stops, check NHK World / JMA for tsunami or aftershock guidance.

For the live map and preparedness guide, visit the Japan earthquake tracker.

Frequently asked questions

What is the difference between Shindo and magnitude?: Magnitude estimates the total energy released by an earthquake. Shindo (JMA seismic intensity) describes how strongly the ground shook at a specific place. The same quake can register different Shindo values in different cities.
What Shindo level is dangerous for travelers?: Shindo 4 and above is widely felt and can rattle furniture. Shindo 5-lower and higher can make standing difficult and may damage older buildings. Treat any strong shaking seriously and follow Drop, Cover, and Hold On.
Where should I check official Japan earthquake alerts?: Use the Japan Meteorological Agency (JMA) and NHK World for official multi-language emergency information. Japanist’s tracker is for awareness and education, not official alerts.