IRIS Station Monitor



Did the Ground Move Near Me?
IRIS Station Monitor

Station Monitor

Did the ground move near me?

Use your device’s location to find stations near you. When prompted, please ‘allow’ location access.
Find stations in the vicinity of a zip code or input a station name and select it from the list.
station map
Find the station on the interactive map.

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Station Cluster
Selected Station

Select station first

Date UTC

Events on the chart

    Recent Events

      Notable Events

        Select station first

        About Station Monitor

        Station Monitor provides access to continuous, real-time ground motion from hundreds of locations around the globe. This data, collected by seismometers, measure motion generated by earthquakes, volcanic eruptions, and other seismic sources. By viewing the recordings from multiple stations, you can explore how ground motion changes at various locations relative to the earthquake. Lots of other things can cause the ground to move besides earthquakes.

        By regularly monitoring one or more stations maybe will learn how to detect these non-earthquake sources! To get started, view this this video.


        • Webicorder Station information: Station location, Town (US), State (US), Country, 3-4 letter station name - 2 letter seismic network name. Example: Marconi Conference Center, Marshall, CA, USA MCCM-BK
        • nM/S - Nanometers/second - Seismometers typically record how fast the ground is moving. A nanometer is 0.0000001 of a millimeter, or the scale of molecules. A millimeter is about the thickness of a dime. Note that some of the scales are written in exponential notation, where 1.5E5 nM/S means 1.5 X10X10X10X10X10 or 150000 nm or 0.15 mm/S.
        • Amplitude Scaling
          Auto - Plot is scaled to largest signal of the day
          Custom - Plot is scaled to optimal setting for that station
          Fixed - Plot is scaled to a fixed value that is the same for all stations and is optimized for large earthquakes.


        • P - Estimated arrival time of the Primary wave, the fastest wave traveling through Earth. The particle motion in the wave is in the direction of travel of the wave and the wave is similar to a sound wave.
        • S - Estimated arrival time of the Secondary or Shear wave. This wave travels more slowly than the P wave and the particle motion in the wave is side to side. S waves do not travel through liquids.
        • Surface Waves - These waves travel as a group around the surface of the earth and are usually the largest waves seen on the seismogram. The further away the earthquake, the more spread out the surface waves are in time.
        • For more information about seismic waves


        This app has been developed by the Incorporated Research Institutions for Seismology (IRIS) which is a major facility funded by the National Science Foundation.

        Incorporated Research Institutions for Seismology National Science Foundation


        • M Magnitude
        • Signal quality
        • Click on the Magnifying glass icon to see event trace once you selected it from event list.
        • Plot is showing vertical (up/down) motion.
        • All dates and times are in Coordinated Universal Time (UTC)
        • Your local time:
        • Global, Regional, and Local events classified by distance form the station
        • P and S arrival times are estimated ones, not actual.
        • E - Earthquake epicenter
        • S - Recording station location