About JISHINDESU
JISHINDESU is an independent earthquake information service designed to make Japanese seismic reports understandable at the level of individual observation stations.
Last updated: 29 August 2026On this page
What the service does
The interactive map combines earthquake epicentres, magnitude, depth, tsunami status and actual Shindo readings reported at observation stations. Users can choose a reference point and compare surface and hypocentral distance.
Each event has a permanent, shareable page in Japanese, English and Polish, including available reports and later corrections.
Independence
JISHINDESU is not operated, sponsored or endorsed by the Japan Meteorological Agency, P2PQuake, OpenStreetMap, OpenMapTiles or OpenFreeMap. Their names identify data and map sources only.
The service is operated by Marcin Korzeniowski under the trade name CODEVERTURE. JISHINDESU does not issue its own earthquake or tsunami forecasts or warnings.
Who it is for
JISHINDESU is intended for people living in Japan, families following places important to them, travellers and readers who need help interpreting Japanese earthquake information.
↑ Back to topWhat makes it different
The service connects an earthquake-wide maximum with local station observations, saved places, distances, history and visible corrections. It does not predict earthquakes or replace official JMA information.
Sources, operator and funding
Earthquake information is based primarily on JMA bulletins delivered through P2PQuake; selected historical records from 2000–2014 come from the USGS ComCat catalogue. Each report identifies its source. Maps use OpenFreeMap, OpenMapTiles and OpenStreetMap. Details are published on the methodology page. Marcin Korzeniowski operates the service under CODEVERTURE. Free public access is supported in part by clearly separated advertising.