Compare current M4.5+ earthquake activity with a comparable historical baseline. Quake Pulse uses percentiles and rolling monthly medians to describe activity without predicting future earthquakes.
A high index means recent activity is high relative to the selected historical baseline. It does not mean that a larger earthquake is about to occur.
A high index means recent activity is high relative to the selected historical baseline. It does not mean that a larger earthquake is about to occur.
The comparable series uses M4.5+ events because historical detection of smaller earthquakes is less consistent. The score is the percentile rank of the latest 30-day count against up to 60 completed historical months. It is a descriptive indicator, not a forecast.
A high index means recent activity is high relative to the selected historical baseline. It does not mean that a larger earthquake is about to occur.
Guides, explainers and practical reading to go beyond the live data.
Magnitude is only one part of the story. Depth, distance, local ground conditions and building vulnerability help explain why shaking can differ so much from one earthquake to another.
Read article →
Earthquake-resistant design is not about making buildings immovable. It is about controlling forces, deformation and failure so people have a much better chance of staying safe.
Read article →
Early-warning systems detect an earthquake after it starts and try to send an alert before the strongest shaking arrives. The difference between warning and prediction matters.
Read article →
