Tonga Earthquake on May 11 2025: Impact and Epicenter Data

A magnitude 5.5 earthquake occurred on May 11, 2025, 75km south of Pangai, Tonga. The dataset, last updated on May 21, 2026, contains geospatial information from WFP's Automated Disaster Analysis and Mapping (ADAM) system, including the epicenter coordinates and an estimated impact on 17 people within a 50km radius.

Use Cases

• Map the earthquake's epicenter and affected area based on the provided latitude and longitude coordinates.
• Estimate population exposure for initial disaster response based on the reported impact on 17 people within 50km.
• Analyze seismic event characteristics for regional risk modeling based on the magnitude and depth parameters.

Strengths

• Specific event details are provided, including a magnitude of 5.5 and a depth of 10.0 km.
• The epicenter is precisely located with latitude -20.4717 and longitude -174.2203.
• Includes a concrete impact metric, stating 17 people were affected within 50km.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• The dataset's temporal coverage is limited to a single event on May 11, 2025.

Provenance

Source

WFP Automated Disaster Analysis & Mapping

Collection Method

Collected, analyzed, and mapped by the Automated Disaster Analysis and Mapping (ADAM) system following a sudden-onset emergency.

Time Range

May 11, 2025

Freshness

Last updated 2026-05-21 21:44:31.465812; freshness should be verified.

Geography

Tonga, specifically 75km south of Pangai.