1. Data Attribution
This website uses the following data sources:
- Earthquake Data: Historical earthquake data is provided by the United States Geological Survey (USGS) Earthquake Hazards Program via their FDSNWS Event Web Service API. earthquake.usgs.gov
- Map Tiles: Map imagery provided by various third-party basemap providers (OpenStreetMap, ESRI, USGS, CartoDB). See basemap attribution on the map.
- Overlay Data: Geospatial overlays (state boundaries, counties, NWS regions, etc.) from various public domain sources including Natural Earth, U.S. Census Bureau, and NOAA.
DATA QUALITY: Historical earthquake data represents archived USGS earthquake catalog records. Magnitude, location, and timing data are as originally cataloged and may have been revised or updated by USGS. This is archival data only, not for real-time earthquake monitoring or safety decisions.
2. Disclaimers
NO WARRANTY: This website and all data, maps, and visualizations are provided "AS IS" without warranty of any kind, either express or implied, including but not limited to warranties of merchantability, fitness for a particular purpose, or non-infringement.
ACCURACY: While we strive to present data accurately, we make no guarantees regarding the accuracy, completeness, timeliness, or reliability of any data displayed on this website. Data may contain errors, omissions, or be out of date.
NOT FOR OPERATIONAL USE: This website is for educational, research, and informational purposes only. DO NOT use this data for earthquake preparedness, emergency response, building safety assessments, or any safety-critical decisions. Always consult official sources (USGS, local emergency management, seismology experts) for current earthquake information and safety guidance.
MAGNITUDE AND LOCATION: Earthquake magnitudes and locations may be subject to revision by USGS as more data becomes available. Historical values shown here may differ from current USGS catalog values.
3. Limitation of Liability
IN NO EVENT SHALL THIS WEBPAGE, its operators, contributors, or data providers be liable for any direct, indirect, incidental, special, consequential, or punitive damages arising out of or related to your use of this website or reliance on any data provided, even if advised of the possibility of such damages.
You assume all risks associated with the use of this website and its data.
4. Terms of Use
By using this website, you agree to the following:
- You will not use this website or its data for any unlawful purpose
- You will not attempt to compromise the security or integrity of this website
- You will not misrepresent data from this website as official, verified, or endorsed by USGS, NOAA, or any government agency
- You acknowledge that this website may be modified, suspended, or discontinued at any time without notice
- You will credit this website and original data sources (USGS) when sharing or republishing data or visualizations
5. Bugs, Errors, and Feedback
This website may contain bugs, errors, or inaccuracies. If you encounter issues or have feedback, please contact us at historicalweatherhwx@gmail.com. While we appreciate reports, we make no guarantee of response times or fixes.
6. Copyright and Licensing
Data: USGS earthquake data is public domain. Other data sources may have their own terms - please refer to the original data provider.
Website: © 2025 Historical Weather (hwx). Website design, code, and original content are proprietary unless otherwise noted.
Map Tiles: Map imagery is subject to the licensing terms of the respective providers (see attribution on map).
7. Contact Information
For questions, comments, data errors, or accessibility issues, please contact:
Name: Micheal Simpson
Email: historicalweatherhwx@gmail.com
8. About This Website
Purpose: This website provides interactive visualizations of historical earthquake data from the USGS earthquake catalog for educational and research purposes.
Data Coverage: Earthquake events worldwide from the USGS earthquake catalog. Coverage and completeness vary by region and time period.
Limitations:
- Historical data only - not for real-time earthquake monitoring
- Magnitudes and locations may have been revised since original catalog entry
- Small earthquakes (magnitude < 2.5) may not be comprehensively cataloged globally
- Not validated or quality-controlled for operational use
- Depth values are approximations and may have large uncertainties
Acknowledgments: Special thanks to the United States Geological Survey (USGS) Earthquake Hazards Program for maintaining the earthquake catalog and providing public API access to this critical scientific data.
Version: 1.0 | Last Updated: 01/01/2025