Latest Earthquakes near Ōmachi
Live map and archive of seismic activity in and around Ōmachi, Nagano.
Ōmachi Activity Report
M1.5+Largest Measured Events
Filtered Statistics
Filtered Statistics
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Common Questions about Earthquakes near Ōmachi
Is Ōmachi in an earthquake-prone area?
Ōmachi and the surrounding Nagano region may experience seismic activity of varying strength. The map above helps you review nearby recent events and get a quick sense of local seismic patterns.
When was the last earthquake near Ōmachi?
Use the filters above to check the latest earthquakes near Ōmachi. The past-hour, past-day, and past-7-day views are especially helpful if you are monitoring current activity.
What is the largest earthquake recorded near Ōmachi?
Switch to a wider custom date range to look further back in the archive. That makes it much easier to identify the strongest historical earthquakes around Ōmachi.
How far back does the earthquake data go?
Our broader archive reaches back to 1900. To keep performance stable, the visible list is capped at the 2000 most relevant events for your current filters.
Earthquake information is automatically aggregated from the official seismic agencies listed below. Preliminary measurements can change as agencies review an event; use local emergency authorities for safety decisions. Latest successful data update: Aug 12, 2026, 12:21 AM UTC. Data sources: USGS / EMSC / JMA / Geoscience Australia / GeoNet.