M 6.9 Earthquake — ShakeMap MMI 5.2
7 km NNW of Pematangsiantar, Indonesia — Moderate shaking (MMI 5.2)
Geographic Context
This earthquake event occurred near Pematangsiantar (approximately 7 km away) in Indonesia, located at the convergence of the Indo-Australian and Eurasian tectonic plates. An estimated 278.7K people live within 40 km of the event location, placing this in the "severe" population impact tier.
Event Assessment
This event is a strong earthquake of magnitude 6.9, powerful enough to cause significant structural damage in the epicentral region. The hypocenter was located at a depth of 183 km. Calamity.live has classified it as "high" severity with a severity value of 69. The computed Calamity Score is 47 out of 100, reflecting a moderate-impact event. The primary scoring components are: population (70), intensity (58), historical (29). Data for this event was sourced from usgs_shakemap, one of the 250 scientific monitoring sources aggregated by Calamity.live.
Regional Monitoring Context
Indonesia has a documented history of earthquake events. Seismic monitoring in the region draws on data from multiple agencies including USGS, EMSC, and regional networks. Understanding local seismicity helps emergency management agencies plan for potential future events and assess building code adequacy. Earthquake hazard in any region depends on fault proximity, soil conditions, and building vulnerability — factors that can vary significantly even within a single metropolitan area.
Event Data
| Type | Earthquake |
| Severity | high |
| Severity Value | 69 |
| Calamity Score | 47 / 100 |
| Confidence | 70% |
| Coordinates | 3.0180, 99.0376 |
| Nearest City | Pematangsiantar (7 km) |
| Population Exposed | 278.7K within 40 km |
| Impact Tier | severe |
| Timestamp | 2026-08-15T10:54:52.753Z |
| Source | https://earthquake.usgs.gov/earthquakes/eventpage/us6000tkyk/shakemap |
Score Breakdown
Technical Details
| Mag | 6.9 |
| Depth | 183.226 |
| Mmi | 5.22 |
| MmiDescription | Moderate |
| Felt | 6 |
| Alert | green |
| Sig | 735 |
| Tsunami | false |
| Place | 7 km NNW of Pematangsiantar, Indonesia |
| Types | ,dyfi,ground-failure,losspager,moment-tensor,origin,phase-data,shakemap, |
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 47/100, near Pematangsiantar (Indonesia), based on data from usgs_shakemap. Source: Calamity.live, a platform aggregating real-time data from 197 scientific monitoring sources.