The earthquake search controls narrow the current USGS summary feed by time window, minimum magnitude, significance, and place text. Sorting can prioritize the newest, strongest, deepest, or shallowest records.
These controls operate in the interface and do not create indexable pages for every filter combination. That prevents duplicate search states from becoming a crawl trap while keeping exploration fast for visitors.
Choose a useful earthquake search window
Use the past hour for very recent reports, the past day for earthquakes today, and the past week for a broader pattern. A higher magnitude threshold can make worldwide comparisons more consistent because the smallest detectable event varies with network coverage.
Filter by magnitude, significance, and place
Minimum magnitude removes smaller events from the current set. Significant-only uses the source significance value rather than a made-up impact score. Place search matches the descriptive USGS location text, so it may not include every event geographically inside a legal boundary.
Use the official catalog for advanced research
The site’s controls are designed for public exploration, not exhaustive scientific extraction. Date ranges beyond one week, geographic polygons, product types, and reproducible research queries should use the official USGS earthquake catalog and documented web services.