Earthquake Response App

Select an earthquake to get started.

Map
Plots
Summary

No Mainshock

Select an Earthquake

Select an earthquake from the list or map, or search the catalog for an earthquake. You can also manually enter an Event ID below.

Significant Earthquakes Past Month

Mainshock

Event ID

Find an Earthquake

Search the ComCat earthquake catalog and display the results on the map.

Magnitude

3.5

Time Period

Past Month
Past Week
Past Day
Custom

Begin

–

End

Custom dates use UTC time.

Region

Worldwide
California-Nevada
Custom

Click and drag to draw a new custom region.

When you search the catalog, the URL is automatically updated, making it easy to share or bookmark your settings.

Settings

Initial values for Aftershocks, Foreshocks, and Historical Seismicity are set automatically based on the Mainshock’s magnitude and estimated rupture length.

Earthquake Catalog

ComCat
Double-Difference

Northern California events only

Time Zone

User
UTC

Refresh

Aftershocks

Every:

5 mins
15 mins
30 mins
60 mins

Catalog Search

Every:

5 mins
15 mins
30 mins
60 mins

Aftershocks

Min magnitude Max distance from Mainshock (km)

Foreshocks

Min magnitude Max distance from Mainshock (km) Max days before Mainshock

Historical Seismicity

Min magnitude Max distance from Mainshock (km) Max years before Mainshock

When you customize the settings, the URL is automatically updated, making it easy to share or bookmark your settings.

Legend + Key

Mainshock
Aftershocks, Catalog Search
- Past hour
- Past day
- Past week
- Older
Foreshocks
Historical Seismicity
Magnitude
FieldNotes
Faults, Plate Boundaries
ShakeMap Stations
Intensity

Earthquake Response App

This web application creates an interactive Map, Plots, and Summary for any earthquake using real-time data. It helps you visualize, analyze, and collect information to use in talking points and scientific response.

Earthquake data is from ComCat and/or NCEDC.

Tips

Click on an earthquake in a summary list or on a (2d) plot to view the earthquake and additional details on the map.
Scroll on the left / right edges of the page to avoid unintentionally interacting with the plots. Use the ‘control’ key to pan a 3d plot.

Contacts

Scott Haefner
Brad Aagaard

Version: 0.9.2
Date: 2024-02-06

Github repository