Earthquakes
Unavailable- Component score
- —
- Freshness state
- Unavailable
- Observed
- No approved current observation
Source completeness0%
Past 24 hours
Earthquakes today: a 24-hour evidence check
A daily earthquake page should answer a narrow question: what has been observed in the latest complete window? It should not imply that every event is exceptional or that an empty response means the planet is quiet. This view is designed around source timestamps, update lag, and the difference between a recently detected earthquake and one that materially changes the configured risk component.
- Page reviewed
- Current evidence
- Unavailable
Current evidence
Verified observations from today
A production daily view must use the official observation time, not the page-load clock, and must retain updates to magnitude, alert status, and provider review. The list remains absent when that read cannot be verified.
The latest normalized USGS records are unavailable through the public category-page boundary. This is a missing-data state; it does not mean that no earthquakes occurred during the past 24 hours.
Past 24 hours
How to read a day of seismic activity
Earthquake catalogs are revised as additional stations report. An event can receive a new magnitude, depth, location, or status after its first appearance, so a reliable daily page preserves provider identity and source-updated time rather than freezing the first value it sees. Counts can also vary with the feed's inclusion threshold and the exact window boundary.
The most recent event is not necessarily the most consequential one. A useful today view foregrounds official impact context and freshness while avoiding a dramatic ranking based only on magnitude. Readers near an event should follow USGS regional products and local emergency services, especially when shaking, tsunami, or aftershock guidance is issued.
Methodology
What changes inside 24 hours
Catalog revisions
Provider updates can refine magnitude, location, depth, and review status throughout the day.
Window boundaries
The daily interval is explicit so events do not disappear or duplicate because of an ambiguous local date.
Impact context
Official alert and tsunami information carries more meaning than recency alone.
Freshness state
When today's view is too old
The page compares the most recent verified source observation with its configured freshness window. Delayed data is labeled; expired or missing data removes numeric claims instead of preserving a stale daily snapshot.
Current view calculated:
Provenance
Sources and usage boundaries
The public source registry is unavailable. Source decisions remain fail-closed.
| Source | Rights decision | Production state | Attribution and limits |
|---|---|---|---|
| USGS Earthquake Hazards Program | Approved | Not enabled for production | Earthquake observations are attributed to the U.S. Geological Survey and retain provider event links and timestamps. Approved production feed. The site must still show observation freshness and must not replace official local emergency guidance. |
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