Overview

• The U.S. Geological Survey logged the magnitude 6.6 quake at 12:37 pm local time on July 25, centered 440 kilometers southwest of Apia, Samoa.
• At 314 kilometers below the seabed, the event was classified as a deep-focus earthquake, limiting its surface shaking.
• The U.S. Tsunami Warning System issued no alert and local officials reported no injuries or structural damage.
• While deep-focus tremors seldom devastate populated areas, they can trigger landslides in susceptible terrain.
• Seismic agencies continue real-time monitoring across the Pacific Ring of Fire to assess aftershocks and secondary hazards.