Selected recordM7.8
64 km NNW of Ende, Indonesia
10 km deep ·
Beneath the Threshold
See where earthquakes happened. Hide smaller ones to see how the map changes.
Try the project ↓How to use this project
Help
How to explore
The map covers August 9 to September 8, 2026. Use the filters to choose which earthquakes appear.
Hide smaller earthquakes
With All depths selected and no day filter, raising the minimum to M5.0 reduces the count from 653 to 192.
Choose a depth
Depth is how far below the surface an earthquake began. Choose Shallow, Mid-depth, or Deep to compare them.
Choose a day
Select a daily bar to show that day. Select it again to return to all dates. The day stays selected if you change the other filters.
- Magnitude
- An earthquake’s size, shown with M. M5.0 means magnitude 5.0. The scale is logarithmic: each step is a large increase in size.
- Minimum magnitude
- The smallest magnitude shown. Smaller earthquakes are hidden.
- Depth
- How far below Earth's surface the earthquake began, measured in kilometers.
- Catalog
- A list of earthquake records. This one covers 30 days and starts at magnitude 4.5.
U.S. Geological Survey · August 9–September 8, 2026
See where
earthquakes happened.
Move the slider to hide smaller earthquakes. The map shows 30 days of recorded activity.
Earthquakes shown653100% of the original 653 records
Typical depth10 kmThe median, or middle depth
Largest magnitudeM7.8Across the full 30-day window
Step 1 · Look at location
Where they happened
Shallow Mid-depth Deep
Each circle is an earthquake. Bigger circles mean larger magnitudes; color shows depth. North is up, west is left, and the middle line is the equator.
Step 2 · Look at time
Earthquakes by day
Each bar counts matching earthquakes that day. Select a bar to show only that day elsewhere. Select it again to return to all days.
Step 3 · Compare size and depth
Depth increases downward to 700 kmHow large and how deep?
Farther right means a larger magnitude. Farther down means deeper below the surface, in kilometers (km). Colors match the depth filters.
Step 4 · Inspect individual records
Largest earthquakes shown
Choose an earthquake to see its details and highlight it in the charts. This list shows up to seven of the largest matches.
Why this exists
The question
Explore a month of earthquakes by size, depth, and day.
What to try
Move the slider to hide smaller earthquakes.
Method and limits
About the data
I saved the USGS feed at 15:37 UTC on September 8, 2026. It contains 653 earthquakes of magnitude 4.5 or higher, recorded from August 9 to September 8. I kept each event’s location, magnitude, depth, time, place name, and identifier. None of these fields are missing. The source link opens today’s feed, not this saved copy.
Magnitude and depth filters affect every view. Selecting a day narrows the other views; the daily chart keeps all dates. Its bar heights rescale to the largest count. The list shows up to seven of the largest matches, with newer events first when magnitudes tie. Median depth is the middle value after sorting, or the average of the middle two.
The first and last UTC dates are partial days. Nearby earthquakes may belong to one sequence. USGS uses several methods to estimate magnitude; this page does not show measurement uncertainty or later revisions. It does not account for local buildings or population. It cannot measure local danger, explain causes, or predict future earthquakes.
Skills used
- Data analysis
- Statistical reasoning
- Visualization
- Information design
- Interaction design
- Accessibility
- Performance
What the data shows
- With all dates and depths included, raising the minimum from M4.5 to M5.0 reduces the count from 653 to 192, a 71% drop.
- A quieter-looking map can mean that smaller earthquakes were filtered out. It does not mean the area is safer.