Japan earthquakes, tsunami and Mt. Fuji in plain language
We translate the Japan Meteorological Agency’s technical data into plain language — what happened, what it means for you, and what to do.
Latest最新の地震
Works while YURAGI is open in a tab or installed as an app. These are observed reports from JMA, not warnings — they arrive after the shaking.
When it happensいざという時
Official updates and weather
今日の情報Official updates公式の発表
Recent bulletins from the Japan Meteorological Agency and the Fire and Disaster Management Agency, shown in the original Japanese.
Weather天気
YURAGI shows JMA forecasts as published and makes no forecasts of its own.
Recent最近の記録
Rhythm · 14 days地震のリズム
Learn and prepare
もっと知るHow is Mt. Fuji today?
Mt. Fuji is an active volcano, but there are currently no signs of eruption. Occasional deep “murmurs” are within the normal range, and JMA monitors it around the clock.
Nankai Trough and Japan’s great earthquakes
Every great Nankai Trough earthquake since the first written record, set against Japan’s other major earthquakes. Select a marker for details.
How strong is an intensity?
What each level of Japan’s seismic intensity scale (shindo 1 to 7) feels like, what happens and what to do, and how intensity differs from magnitude.
Preparation is the best peace of mind.
Earthquake preparedness for Japan: the first minute of shaking, a household stockpile calculator, and what volcanic ash would mean for Tokyo.
- The first minute of shaking: three things to do
- Three days of calm: household stockpile calculator
- If volcanic ash falls, what happens to Tokyo?