M 4.9 Earthquake
SOUTHEAST OF HONSHU, JAPAN
Geographic Context
This earthquake event occurred at coordinates 30.80°, 142.79°.
Event Assessment
This event is an earthquake of magnitude 4.9 at 10 km depth. Calamity.live has classified it as "medium" severity with a severity value of 40.32. The computed Calamity Score is 8 out of 100, suggesting contained impact at this time. The primary scoring components are: intensity (18), historical (9). Data for this event was sourced from iris, 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.
Event Data
| Type | Earthquake |
| Severity | medium |
| Severity Value | 40.32 |
| Calamity Score | 8 / 100 |
| Confidence | 60% |
| Coordinates | 30.8003, 142.7860 |
| Nearest City | Katsuura (536 km) |
| Impact Tier | minor |
| Timestamp | 2026-03-09T06:38:59.000Z |
| Source | https://ds.iris.edu/ds/nodes/dmc/tools/event/12080032 |
Score Breakdown
Technical Details
| Mag | 4.9 |
| Depth | 10 |
| Region | SOUTHEAST OF HONSHU, JAPAN |
| Isc Mag | 4.9 |
| MagType | mb |
| Isc Depth | 10 |
| Isc Region | Southeast of Honshu |
| Isc MagType | M |
| MergedSources | [{"id":"isc_645496426","source":"isc","severity":"medium","timestamp":1773038342230,"severityValue":40.32},{"id":"isc_645488007","source":"isc","severity":"low","timestamp":1773038340000,"severityValue":29.400000000000002}] |
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 8/100, near Katsuura, based on data from iris. Source: Calamity.live, a platform aggregating real-time data from 197 scientific monitoring sources.