Data sources
Know where the information comes from.
Keryx Maps brings together 45+ data feeds from 25+ sources — government agencies, scientific organisations and monitoring networks. We are the aggregator, not the issuing authority: every event keeps the name of the source it came from, so you can check it there.
How sources reach you
Step 1
The source publishes
An agency, network or project issues an event, warning or measurement on its own schedule.
Step 2
Keryx checks for it
We check each feed on a regular interval and process what is new or changed.
Step 3
We place it on the map
Each event is given its location and matched to the map regions users have downloaded.
Step 4
You see it — or get alerted
The event appears on the map with its source, and alerts go out for the regions you download.
We do not independently verify every upstream report. Sources differ in how quickly they publish, what they cover, how they classify severity and how often they revise. We show what each source reports and who reported it.
Hazard and event sources
The providers behind the events and alerts in Keryx today. Several publish more than one feed. “How often we check” is how often Keryx looks for updates — not how often the source publishes.
Earthquakes
USGS Earthquake Hazards Program (opens in a new tab)
Earthquake locations, magnitudes and depths
- Coverage
- Worldwide
- How often we check
- Every few minutes
EMSC (European-Mediterranean Seismological Centre) (opens in a new tab)
Earthquakes of magnitude 4.5 and above
- Coverage
- Worldwide
- How often we check
- Every few minutes
GFZ GEOFON (opens in a new tab)
Earthquake reports
- Coverage
- Europe and surrounding regions
- How often we check
- Every 15–30 minutes
Japan Meteorological Agency (JMA) (opens in a new tab)
Earthquake information
- Coverage
- Japan and nearby
- How often we check
- Every few minutes
Geoscience Australia (opens in a new tab)
Earthquake reports
- Coverage
- Australia and region
- How often we check
- Every 15–30 minutes
Tsunami
NOAA Tsunami Warning Centers (NTWC and PTWC) (opens in a new tab)
Tsunami warnings, advisories and information statements
- Coverage
- The Pacific and Caribbean, and U.S. and Canadian coasts
- How often we check
- Every few minutes
Volcanoes and volcanic ash
USGS Volcano Hazards Program (opens in a new tab)
Volcano notices and alert levels
- Coverage
- United States
- How often we check
- Every 15–30 minutes
Smithsonian Global Volcanism Program (opens in a new tab)
Weekly volcanic activity reports and the volcano database
- Coverage
- Worldwide
- How often we check
- Every few hours
Volcanic Ash Advisory Centers — Washington and Anchorage (NOAA), Tokyo (JMA), Darwin (Bureau of Meteorology)
Volcanic ash advisories
- Coverage
- The regions those four centres cover
- How often we check
- Every 15–30 minutes
Wildfire and smoke
NASA FIRMS (opens in a new tab)
Satellite fire detections (MODIS and VIIRS)
- Coverage
- Worldwide
- How often we check
- Every 15–30 minutes
NOAA Hazard Mapping System (HMS) (opens in a new tab)
Analyst-reviewed fire detections and smoke plumes
- Coverage
- North America
- How often we check
- Fire: every few minutes · Smoke: every few hours
Wildland Fire Interagency Geospatial Services (NIFC) (opens in a new tab)
Wildfire incidents and fire perimeters
- Coverage
- United States
- How often we check
- Every 15–30 minutes
CAL FIRE (opens in a new tab)
Wildfire incidents
- Coverage
- California
- How often we check
- Every 15–30 minutes
Texas A&M Forest Service (opens in a new tab)
Wildfire incidents
- Coverage
- Texas
- How often we check
- Every 15–30 minutes
Weather alerts and forecasts
NOAA National Weather Service (opens in a new tab)
Watches, warnings and advisories — severe, winter, fire weather, marine and visibility — plus forecasts
- Coverage
- United States
- How often we check
- Every few minutes
NOAA Weather Prediction Center (opens in a new tab)
Storm reports, winter weather outlooks and excessive rainfall forecasts
- Coverage
- United States
- How often we check
- Every 15–30 minutes
Environment and Climate Change Canada (opens in a new tab)
Weather warnings, received through the national alert distribution system
- Coverage
- Canada
- How often we check
- Every few minutes
MeteoAlarm (opens in a new tab)
Weather warnings from participating national weather services
- Coverage
- Europe
- How often we check
- Every few minutes
Bureau of Meteorology (opens in a new tab)
Weather warnings
- Coverage
- Australia
- How often we check
- Every 15–30 minutes
Open-Meteo (opens in a new tab)
Current conditions and forecasts for selected cities
- Coverage
- Selected cities outside the United States
- How often we check
- Every 15–30 minutes
Tropical storms
NOAA National Hurricane Center (opens in a new tab)
Active storms, tracks, forecast cones and the tropical weather outlook
- Coverage
- Atlantic, eastern and central Pacific
- How often we check
- Every 30–60 minutes
Floods
NOAA National Water Prediction Service (opens in a new tab)
River gauge observations and flood categories
- Coverage
- United States
- How often we check
- Every few minutes
Avalanche
Avalanche.org (opens in a new tab)
Avalanche danger forecasts from U.S. avalanche centres (CAIC, NWAC, UAC, BTAC, GNFAC, SAC and others) — each forecast is courtesy of its issuing centre
- Coverage
- United States
- How often we check
- Every few hours
Avalanche Canada (opens in a new tab)
Avalanche forecasts (including Parks Canada, Avalanche Québec and Kananaskis Country)
- Coverage
- Canada
- How often we check
- Every few hours
Air quality and radiation
EPA AirNow (opens in a new tab)
Air Quality Index observations
- Coverage
- United States
- How often we check
- Hourly
Safecast (opens in a new tab)
Readings from a volunteer radiation-sensor network
- Coverage
- Worldwide, where sensors exist
- How often we check
- Every 15–30 minutes
EPA RadNet (opens in a new tab)
Official U.S. network of radiation air monitors (gamma dose rate)
- Coverage
- United States
- How often we check
- Hourly
Health Canada (opens in a new tab)
Fixed Point Surveillance Network gamma dose-rate monitors
- Coverage
- Canada
- How often we check
- Every 15–30 minutes
Bundesamt für Strahlenschutz (BfS) (opens in a new tab)
Ambient gamma dose-rate (ODL) monitoring network. Data licence: Datenlizenz Deutschland – Namensnennung – Version 2.0
- Coverage
- Germany
- How often we check
- Hourly
Nuclear Regulation Authority, Japan (RAMIS) (opens in a new tab)
Radiation monitoring posts. 出典：原子力規制委員会 放射線モニタリング情報共有・公表システム
- Coverage
- Japan
- How often we check
- Hourly
Nuclear Safety Commission, Taiwan (opens in a new tab)
Environmental gamma monitoring stations. Open Government Data License, version 1.0
- Coverage
- Taiwan
- How often we check
- Every 15–30 minutes
Space weather
NOAA Space Weather Prediction Center (opens in a new tab)
Alerts, Kp index and forecast, solar wind, X-ray flares, protons, solar radio flux and the aurora forecast
- Coverage
- Worldwide
- How often we check
- Every few minutes
NASA DONKI (opens in a new tab)
Solar flares, coronal mass ejections, geomagnetic storms, solar energetic particles and interplanetary shocks
- Coverage
- Worldwide
- How often we check
- Every 15–30 minutes
World Data Center for Geomagnetism, Kyoto (opens in a new tab)
Dst geomagnetic index
- Coverage
- Worldwide
- How often we check
- Every few minutes
Bureau of Meteorology Space Weather Services (opens in a new tab)
Ionospheric conditions
- Coverage
- Worldwide summary
- How often we check
- Every few hours
Civil events and roads
GDELT Project (opens in a new tab)
News-based reports of civil unrest. These come from media coverage, not an official agency.
- Coverage
- Worldwide
- How often we check
- Every few hours
Washington State DOT (opens in a new tab)
Highway alerts and closures
- Coverage
- Washington State
- How often we check
- Every few minutes
About timing
Once Keryx receives an update, alerts for the regions you download go out in about two minutes.
That is our part of the chain. Before it, the source has to detect and publish the event, and we have to pick it up on our next check. Some sources publish within minutes of an event; others issue reports hourly, daily or weekly. So the time from an event happening to your notification varies by source and can be much longer than two minutes.
Limitations
- Sources go down. When a provider is unavailable, its updates pause until it returns.
- Coverage varies. Some sources cover one country or state; a quiet map is not proof that nothing is happening.
- Reports change. Sources revise magnitudes, perimeters and warnings, and we follow their updates.
- New information needs a connection. Offline, you keep your maps and plans, but not new alerts.
- Official instructions come from officials. Keryx does not issue warnings; follow your local authorities.
Map and geographic data
These datasets draw the map, name places and power routing. They are not hazard sources and issue no alerts. We gratefully acknowledge the organisations and communities that make them available.
| Dataset | Used for | Attribution and licence |
|---|---|---|
| OpenStreetMap (opens in a new tab) | Base map and the road network used for on-device routing | © OpenStreetMap contributors, Open Database License (ODbL) |
| Overture Maps Foundation (opens in a new tab) | Points of interest in the offline map index | CDLA-Permissive 2.0 |
| GeoNames (opens in a new tab) | Place names and coordinates | CC BY 4.0 |
| geoBoundaries (opens in a new tab) | Country and administrative boundaries | CC BY 4.0 |
| USGS 3D Elevation Program (opens in a new tab) | Elevation data for topographic contours | U.S. public domain |
| National Park Service (opens in a new tab) | Park trails and points of interest | U.S. public domain |
| U.S. Census Bureau TIGER/Line (opens in a new tab) | Address ranges for search | U.S. public domain |
| Natural Earth (opens in a new tab) | Country, state and lake outlines on the world map and in Labs | Public domain |
| GEM Global Active Faults Database (opens in a new tab) | Active fault lines on the 2D world map | GEM Foundation, CC BY-SA 4.0 |
| Tectonic plate boundaries | Plate boundaries on the 2D world map | After Peter Bird (2003), “An updated digital model of plate boundaries” (PB2002) |
| NASA Blue Marble (opens in a new tab) | Earth imagery on the Labs globe | NASA imagery, public domain |
| SimpleMaps (opens in a new tab) | U.S. map outline in the weather view | MIT License |
| Valhalla (opens in a new tab) | The routing engine that runs on your device | MIT License |
| Terra Draw (opens in a new tab) | Map drawing tools | MIT License |
Hazard data remains the work of the agencies and projects listed above and is used under their terms. Weather data by Open-Meteo.com (CC BY 4.0). Labs, our experimental section, uses no additional live data sources; its work is labelled experimental and does not generate alerts.