Important Disclaimers
No Government Endorsement: This commercial service is not endorsed by, affiliated with, or sponsored by the U.S. Geological Survey (USGS), National Oceanic and Atmospheric Administration (NOAA), National Weather Service (NWS), or any other government agency.
Data Accuracy: All earthquake and tsunami data are provided "as-is" with no warranty. While we strive for accuracy and speed, this service should supplement, not replace, official emergency communications from local authorities.
Our Data Sources
🌍 Earthquake Data (5 sources)
USGS
Global coverage, best for Americas
EMSC
Europe, Mediterranean, Middle East, North Africa
IRIS
Research-grade global seismic data
JMA
Japan, Western Pacific region
GeoNet
New Zealand, Southwest Pacific, Kermadec Islands
🌊 Tsunami Data (4 sources)
PTWC (NOAA)
Pacific Tsunami Warning Center
JMA
Japan tsunami warnings & advisories
GeoNet
New Zealand CAP alerts
DART Buoy Network
13 deep-ocean stations (Pacific, Atlantic, Indian Ocean)
Note: JMA and GeoNet provide both earthquake and tsunami data.
Data Provider Compliance Summary
USGS Earthquake Feeds
Public-domain U.S. Government work
17 U.S.C. § 105
Endpoints
- GeoJSON summary feeds:https://earthquake.usgs.gov/earthquakes/feed/v1.0/summary/
Earthquake data source: U.S. Geological Survey (USGS). Data provided as-is; no endorsement implied.
EMSC FDSN Event Service (SeismicPortal)
Open data; attribution required
SeismicPortal Terms & Conditions
Endpoints
- FDSNWS event API:https://www.seismicportal.eu/fdsnws/event/1/query
Earthquake data source: EMSC/SeismicPortal. Please cite EMSC and follow their Terms & Conditions.
IRIS FDSN Event Service
Open access; attribution requested
IRIS DMC Data Usage/Acknowledgement
Endpoints
- FDSNWS event API:https://service.iris.edu/fdsnws/event/1/query
Data services provided by IRIS DMC. Please include an acknowledgement where practical.
PTWC / NOAA Tsunami Feeds
Public-domain U.S. Government work
NOAA/NWS Disclaimer & Data Policies
Endpoints
- Events JSON:https://www.tsunami.gov/events_json/events.json
Tsunami alert data source: NOAA/NWS (PTWC). Data provided as-is; no endorsement implied.
JMA (Japan Meteorological Agency)
Website content; commercial use permitted with conditions
JMA Website Terms of Use
Endpoints
- Bosai quake list:https://www.jma.go.jp/bosai/quake/data/list.json
- Earthquake information (HTML):https://www.data.jma.go.jp/multi/quake/
Earthquake information from the Japan Meteorological Agency (JMA).
Commercial use is permitted by JMA Website Terms with source citation and proper editing notices. Restrictions under the Meteorological Service Act (e.g., forecasting licenses and warning issuance) may apply in Japan; this service is not an official warning and is not endorsed by JMA.
GeoNet (GNS Science, New Zealand)
Open data; attribution required
CC BY 3.0 NZ
Endpoints
- Quake API:https://api.geonet.org.nz/quake
- CAP Alerts:https://api.geonet.org.nz/cap/1.2/
Data from GeoNet, GNS Science, New Zealand. Licensed under CC BY 3.0 NZ.
Commercial use permitted with attribution. Covers New Zealand, Southwest Pacific, and Kermadec Islands region.
DART Buoy Network (NOAA)
Public-domain U.S. Government work
NOAA Data Disclaimer
Endpoints
- DART Data:https://www.ndbc.noaa.gov/dart.shtml
Deep-ocean Assessment and Reporting of Tsunamis (DART) data from NOAA. Optional attribution.
13 monitored buoys globally (Pacific, Atlantic, Indian Ocean). Direct physical tsunami wave measurement via bottom pressure sensors. Thresholds: >50cm (Major), >20cm (Significant), >10cm (Moderate), >5cm (Minor).
JMA Legal Caveat
Meteorological Service Act (Japan)
Usage may be restricted by the Meteorological Service Act, including licensing for forecasting services and restrictions on issuing warnings in Japan (see Article 17 and Article 23). This service does not issue official warnings and is not endorsed by JMA.
Legal Notice
This page provides a concise legal orientation (not legal advice) for the data providers and services our emergency alert system relies upon. For complete terms and conditions, please refer to each provider's official documentation linked above.