A magnitude 8.3 (MW) earthquake occurred on 1918-08-15, 20:18 local time (12:18 UTC) (just now), centered Philippine Sea (145 km SW of General Santos, Philippines). The hypocenter was located at a shallow depth of 20 km. Primary telemetry verified by USGS alongside 1 regional seismic monitoring networks.
Curated Global Seismic Archive (1700–Present)
42.50 Mt TNT
shallow (Shallow crustal)
Injuries: > 5,000 · ~52.1M felt
Timeline of foreshocks, main rupture, aftershocks and machine learning risk probability evolution.
Shaking intensity is modelled from magnitude, depth and distance (GMPE attenuation), not reported by residents.
| Town | Distance | Intensity |
|---|---|---|
| General Santos · South Cotabato | 145 km | MMI VIII |
| Cotabato · Shariff Kabunsuan | 189 km | MMI VII |
| Davao · Davao Del Sur | 252 km | MMI VII |
| Zamboanga · Zamboanga del Sur | 262 km | MMI VII |
| Pagadian · Zamboanga Del Sur | 263 km | MMI VII |
| Ozamis · Misamis Occidental | 291 km | MMI VII |
Independent solutions for the same rupture. Differences of 0.1–0.3 in magnitude are normal and reflect method and station coverage.
| Agency | Source ID | Magnitude | Depth | Epicenter |
|---|---|---|---|---|
USGS Primary | iscgem913230 | M 8.3 | 20 km | 5.54, 123.99 |
Nearest mapped active fault: Unnamed Fault, 5 km away, slip rate ~15.0 mm/yr (GEM Global Active Faults).
View live seismic monitoring, historical danger benchmarks, fault slip models and recurrence intervals for this zone.