Recent Global Earthquakes - Web Map

This displays recent earthquake information from the United States Geological Survey (USGS) Prompt Assessment of Global Earthquakes for Response (PAGER) program.
In addition to displaying earthquakes by magnitude, this web map also provides earthquake impact details. Impact is measured by population as well as models for economic and fatality loss. For more details, see: PAGER Alerts.

Events are updated as frequently as every 5 minutes and are available up to 30 days with the following exceptions:

• Events with a Magnitude LESS than 3.0 are retained for 3 days
• Events with a Magnitude LESS than 4.5 are retained for 7 days

In addition to event points, ShakeMaps are also provided. These have been dissolved by Shake Intensity to reduce the Layer Complexity.

The specific layers provided in this service have been Time Enabled and include:

• Events by Magnitude: The event’s seismic magnitude value.
• Contains PAGER Alert Level: USGS PAGER (Prompt Assessment of Global Earthquakes for Response) system provides an automated impact level assignment that estimates fatality and economic loss.
• Contains Significance Level: An event’s significance is determined by factors like magnitude, max MMI, ‘felt’ reports, and estimated impact.
• Shake Intensity: The Instrumental Intensity or Modified Mercalli Intensity (MMI) for available events.

For field terms and technical details, see: ComCat Documentation
This map is provided for informational purposes and is not monitored 24/7 for accuracy and currency. Always refer to USGS source for official guidance.
How to Use

This web map can be used for public information, awareness, and visualization of global earthquakes as a standalone map or embedded in ArcGIS Online apps and dashboards. Map pop-ups contain detailed event information which link individually to each event’s USGS page.
All events are derived from the same point data and are classified by an event’s Time (Past 24 hours, Past Week, and Past 3 Months), Magnitude (> 4.0 Richter Magnitude), and PAGER Alert Level.
The web app for this map is here.

There are two articles that walk through this app in greater detail:
Earthquake Mapping Part I: One Symbol from Multiple Fields in Arcade
Earthquake Mapping Part II: The Cartography of Time, Magnitude, and Alert Levels

Light Basemap:

Dark Basemap

The shakemaps have been dissolved by a unique value and ordered so that the most intense shaking appears on top. This is achieved by using symbol level drawing.

Shake Map