M 5.0 Earthquake
Southeast of Honshu
Geographic Context
This earthquake event occurred at coordinates 30.54°, 142.59°.
Event Assessment
This event is a moderate earthquake measuring 5.0 on the magnitude scale, with a focal depth of 10 km. Events of this magnitude are typically felt over a wide area and may cause damage to vulnerable structures. Calamity.live has classified it as "medium" severity with a severity value of 40.32. The computed Calamity Score is 16 out of 100, suggesting contained impact at this time. The primary scoring components are: historical (80), intensity (21). Data for this event was sourced from isc, one of the 250 scientific monitoring sources aggregated by Calamity.live.
Regional Monitoring Context
This earthquake event is being tracked through Calamity.live's global monitoring network, which aggregates data from 250 scientific sources. Real-time monitoring and multi-source verification help ensure data accuracy and timely reporting of significant natural hazard events worldwide.
Cascade Risk Analysis
This event may trigger secondary hazards through cascade effects. Cascade detection is an automated process that evaluates how primary disasters can trigger secondary events — for example, earthquakes triggering landslides, or volcanic eruptions causing lahars and pyroclastic flows. These secondary hazards can sometimes pose a greater threat than the initial event, particularly in mountainous terrain or densely populated areas.
Event Data
| Type | Earthquake |
| Severity | medium |
| Severity Value | 40.32 |
| Calamity Score | 16 / 100 |
| Confidence | 60% |
| Coordinates | 30.5410, 142.5890 |
| Nearest City | Katsuura (555 km) |
| Impact Tier | minor |
| Timestamp | 2026-03-09T06:39:02.230Z |
| Source | http://www.isc.ac.uk/cgi-bin/web-db-run?event_id=645496426&out_format=IMS1.0&request=COMPREHENSIVE |
Score Breakdown
Technical Details
| Mag | 5.04 |
| Depth | 10 |
| Region | Southeast of Honshu |
| MagType | mb |
Cascade Risks
Safety Information
If you feel shaking: Drop, Cover, and Hold On. Move away from windows, heavy objects, and exterior walls. After shaking stops, check for injuries and structural damage. Be prepared for aftershocks, which can occur minutes to months after the mainshock. Follow instructions from local emergency management authorities.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
Calamity.live data shows a earthquake event with CalamityScore 16/100, near Katsuura, based on data from isc. Source: Calamity.live, a platform aggregating real-time data from 197 scientific monitoring sources.