CronosPulse
Real-time geophysical data from USGS and the National Weather Service — earthquakes, volcano activity, active flood alerts, and live stream gauge readings across the United States, visualised and updated as events unfold.
Recent Seismic Activity
Last updated 14 minutes ago
Connected data sources
Earthquake Hazards
Real-time and historical seismic events from the USGS ComCat catalogue. Every event includes magnitude, depth, location, PAGER alert level, and felt reports. Data updates within minutes of detection.
- Magnitude, depth, and epicentre coordinates
- ShakeMap instrumental intensity (MMI)
- Community felt reports (Did You Feel It?)
- PAGER alert levels (green → red)
Volcano Activity
Current alert levels and aviation colour codes for every monitored US volcano, sourced from the USGS Volcano Hazards Program. Covers the full range from background baseline to eruption-level alerts.
- Alert level (Normal → Warning)
- Aviation colour code (Green → Red)
- Location and monitoring network
- Filterable by alert level and state
Flood & Streamflow Data
Active NWS flood watches, warnings, and advisories alongside live USGS stream gauge readings. Flood zones are mapped as GeoJSON polygons; gauges show real-time streamflow and gage height for hundreds of active monitoring sites across the US.
- Flood watches, warnings, and advisories
- CAP severity (Minor → Extreme)
- GeoJSON zone polygons on interactive map
- Live streamflow (ft³/s) and gage height (ft)
- 3-day sparkline charts per gauge site
- Per-state map with hundreds of active sites