geohazardwatch is a data platform, not a data producer. Every hazard record shown here — volcanoes, eruptions, earthquakes, alerts, tsunamis, and landslides — originates from a public data provider. This page credits each one and links back to the source.
Global Volcanism Program (GVP), Smithsonian Institution — the Volcanoes of the World (VOTW) database. Volcano records, eruption history, and global activity snapshots are imported from the GVP-VOTW WFS service.
Recommended citation: Global Volcanism Program, Smithsonian Institution. Volcanoes of the World (VOTW) Database. https://volcano.si.edu/
VolcanoDiscovery — aggregated global volcanic activity reports, via their RSS feed. Used with permission (Dr. Tom Pfeiffer, VolcanoDiscovery, 2026-07-23); each item displayed here links back to its source page on volcanodiscovery.com.
USGS Earthquake Hazards Program — real-time and recent earthquake data via the USGS earthquake summary feeds. A work of the U.S. Government; USGS earthquake data is in the public domain.
USGS Hazard Alert Notification System (HANS) — current alert levels and color codes for USGS-monitored volcanoes. Also the source for VONA (Volcano Observatory Notification for Aviation) records, via HANS's getVonasWithinLastYear endpoint.
Aviation Weather Center, NOAA/NWS — Volcanic Ash SIGMETs (VA-SIGMETs), via the Aviation Weather API.
National Weather Service, NOAA — active tsunami warnings, watches, and advisories, via the NWS Alerts API. A work of the U.S. Government; NWS alert data is in the public domain.
NOAA National Centers for Environmental Information (NCEI) / World Data Service (WDS) — Global Historical Tsunami Database — historical tsunami event records referenced on the Tsunamis page.
NASA Cooperative Open Online Landslide Repository (COOLR) / Global Landslide Catalog — global landslide event records, via NASA's maps.nccs.nasa.gov ArcGIS FeatureServer. A work of the U.S. Government; NASA data is generally not subject to copyright in the United States.
USGS Landslide Hazards Program — hazard mapping and technical reports referenced on the Landslides page.
NASA Global Precipitation Measurement (GPM) / LHASA nowcast — rainfall-triggered landslide nowcasting, referenced on the Landslides page.
NASA Fire Information for Resource Management System (FIRMS) — global near-real-time thermal anomaly detections from the VIIRS Suomi-NPP product, shown on the Wildfires page. A work of the U.S. Government; NASA data is generally not subject to copyright in the United States.
Fire Environment Mapping System (FEMS), USDA Forest Service — National Fire Danger Rating System (NFDRS) indices and fuel moisture, calculated from the interagency RAWS weather station network and shown on the Fire Danger page. A work of the U.S. Government; NFDRS outputs are in the public domain.
Beyond the hazard feeds above, a handful of open reference platforms do the quiet work behind almost every page here — checking a place name, dating an eruption, tracing a citation, or catching an event as it unfolds. We are grateful to the people who write, edit, and maintain them.
Wikipedia — the free encyclopedia, and our most-used reference for volcano, region, and historical-event background. Written and maintained by volunteers; text is available under the Creative Commons Attribution-ShareAlike license. Thank you to every editor who has ever fixed a coordinate or sourced a date.
Grokipedia — an AI-generated encyclopedia we consult for quick orientation on unfamiliar subjects and for cross-checking details against other references.
X — often the fastest public signal that something is happening: eyewitness reports, observatory posts, and first images from an erupting volcano or a felt earthquake, frequently ahead of any formal bulletin.
None of these are used as authoritative hazard data. Every record geohazardwatch publishes comes from the official providers credited above; the sources in this section inform the surrounding context, not the data.
geohazardwatch is built as a domain add-on for ngdpbase, an open-source content platform.
If a source is missing, miscredited, or a citation needs updating, please contact us or open an issue at github.com/jwilleke/geohazardwatch.