Tremr monitors seismic activity worldwide in real time using the USGS Earthquake Hazards Program feed, refreshed every five minutes. The list below shows earthquakes filtered by your selected magnitude and time range. Click or tap any event to see full details including depth, coordinates, and tsunami status. Use the Menu to adjust the time window, minimum magnitude, and sort order, or enable Near Me to focus on earthquakes within a set distance of your location. Zoom into a quake area to reveal free live webcams nearby (YouTube streams indexed by LiveWorld). For deeper context on what the numbers mean, read the guide below and our articles on magnitude vs intensity, shallow vs deep earthquakes, and how to read a ShakeMap.
Tremr’s live monitor is a fast view of global seismicity from USGS data. It is not a substitute for official alerts from your local emergency agency — and a star on the map is only the start of the story.
Magnitude measures energy at the source. A jump of 1.0 means about 32 times more energy. Large magnitude far away may feel weak; moderate magnitude nearby can still be damaging. Always read magnitude with depth and distance.
Shallow earthquakes (often under ~30 km near cities) couple more energy into buildings. Deep events can be felt widely while causing less local destruction. On any event card, treat depth as seriously as magnitude.
Explore Tremr explainers on magnitude vs intensity, shallow vs deep earthquakes, tsunami warnings, and the full article library.
First magnitudes are computed automatically within minutes from the earliest seismic waves. As more stations report in, seismologists refine the number — it usually settles within an hour. A revision from M6.4 to M6.7 doesn't mean the quake grew; it means the measurement got better.
Two reasons. The feed has minimum thresholds — roughly M2.5+ in the US and M4.5+ elsewhere — so small felt quakes may not appear. And there can be a few minutes' delay between the shaking and the dot. If you felt it, use the "Did You Feel It?" link on any event card to file a report; those reports help map shaking intensity.
The flag means the quake's location and depth fit the profile for tsunami generation — it is not a warning. Real tsunami alerts come from official agencies such as NOAA's tsunami.gov or the Japan Meteorological Agency. Large, shallow, offshore quakes are the ones to watch.
Tremr polls the USGS feed every five minutes. Major quakes appear within minutes, and the map and list refresh automatically. Magnitude, depth, and location can be revised later as USGS analysts review the event.
No. Tremr is for context and curiosity after the fact. In an emergency, rely on your local emergency agency, USGS earthquake notifications, or your phone's built-in earthquake warnings. Use Tremr to understand what happened — not to decide what to do.