Monitoring
Click on map icons to access monitoring information for events and instruments.
Descriptions of volcano-monitoring techniques are available on the Volcano Hazards Program web site.
Legend
= Yellowstone National Park
= Caldera
Instruments
Show Available Quakes
Magnitude (range): Days ago (range):
Magnitude (range): Days ago (range):
![](https://webarchive.library.unt.edu/web/20130219041533im_/http://volcanoes.usgs.gov/vsc/graphics/EQ-monitoring-legend.png)
Earthquakes on Map
Mag
Date/Time (UTC)
Depth (km)