⚖ BSL 1.1 License
HEIMDALLR
Real-time natural hazard monitoring
Choose which modules to activate
Interact with the map
Click any marker for event details. Right-click or long-press for coordinates, nearest event, and reverse geocoding.
Map Legend
Tap the info button on the map controls for a colour-coded legend of all active layers and markers.
Module Hub
Open with the grid button or Ctrl+K to enable, disable, or pin modules to the top bar.
Controls & Settings
Each module panel has Events, Controls, and Settings tabs. Tap any event to fly to its map location. Use ↻ to reload a source, and configure auto-refresh per source.
Activity Feed
Real-time stream of events from all modules. Filter by domain in the modules.
Global Settings
Language, default map centre and zoom, layer order, and foreground service.
Keyboard Shortcuts
Ctrl+KModule Hub
Ctrl+RRefresh all
AActivity Feed
SSettings
?All shortcuts
EscClose panel
Severe weather alerts from ~190 national services via the WMO, with animated overlays for precipitation, temperature, wind, and pressure.
How to use:
Map
- Alert polygons coloured by severity — click any for details, area, and dates
- E-SOH observation circles in Europe, colour-coded by selected parameter
- METAREA boundary lines toggled from the Maritime section in the Events tab
Sources & Filters
- WMO SWIC — global CAP alerts from ~190 national services
- EUMETNET — MeteoAlarm alerts for ~30 European countries (takes priority over SWIC in Europe)
- NOAA NWS — US National Weather Service alerts (takes priority over SWIC in the US)
- Filter by severity level, time window, marine/expired toggle, and observation station types
Events list
- 3-level drill-down: WMO members → country alerts → alert detail
- Severity pills filter by level; region and member dropdowns narrow the list
- Maritime section for METAREA boundaries and marine warnings
Weather Overlays
- Animated layers: precipitation, temperature, wind, and pressure — one active at a time
- Time slider scrubs forecast hours; tap the map for point values (mm/h, °C, m/s, mBar)
- Per-layer opacity adjustable in the Settings tab
Tracks earthquakes from three networks — USGS, EMSC, and INGV.
How to use:
Map
- Circle size and colour by magnitude — small green (minor) to large red (M6+)
- Nearby markers cluster with a count badge — zoom in or click to expand
- Click any marker for a popup with magnitude, place, time, depth, and source
Sources & Filters
- USGS (worldwide), EMSC (Europe), INGV (Italy) — toggle each on/off
- EMSC WebSocket for live streaming — earthquakes appear instantly
- Filter by time range (1 h – 3 days or custom) and magnitude (0–10)
Events list
- Nearby earthquakes grouped by proximity and time — tap header to expand
- Magnitude pills filter by level (M6+, M5+, M4+, <M4)
Monitors volcanoes from three sources — USGS alerts, Smithsonian GVP catalog, and GDACS eruption reports.
How to use:
Map
- Triangle markers sized and coloured by alert level
- Click any marker for alert level, activity, elevation, region, and source
Sources & Filters
- USGS (US alerts), Smithsonian GVP (~1,400 volcanoes), GDACS (live eruptions) — duplicates merged automatically
- Filter by alert level, region, and GDACS time range (6 h – 30 days)
Events list
- Live Activity (GDACS) at top, Alert Statuses (USGS/GVP) below
- Each entry shows alert badge, volcano name, location, elevation, and source
Tracks active tsunami warnings, watches, and advisories from NWS and GDACS.
How to use:
Map
- Pulsating circle markers coloured by alert level — size and speed scale with severity
- Click any marker for alert type, headline, affected area, onset, and source
Sources & Filters
- NWS (US alerts) and GDACS (global earthquake-triggered tsunami risk)
- Filter by alert level, region, and minimum triggering magnitude
Events list
- Each entry shows alert badge, headline, affected area, and onset/expiry times
- GDACS alerts include triggering earthquake magnitude and estimated wave height
- Alert-level pills filter the list by severity
Tracks active fires from NASA FIRMS satellite hotspots and NIFC US fire perimeters.
How to use:
Map
- Square markers sized and coloured by severity — clustered at low zoom
- NIFC fire perimeters as semi-transparent filled polygons beneath hotspot markers
- Click any marker for severity, FRP, confidence, detection time, and source
Sources & Filters
- NASA FIRMS (global satellite hotspots) and NIFC (US fire perimeters) — overlaps deduplicated
- Filter by severity, region, and detection days (1–10)
Events list
- FIRMS hotspots show location, FRP, and confidence; NIFC entries show fire name, acres, and containment
- Severity pills filter by level (Extreme, High, Moderate, Low)
Tracks tropical cyclones and hurricanes worldwide using NHC/JTWC data, with observed and forecast tracks.
How to use:
Map
- Animated hurricane markers — size and colour scale with Saffir–Simpson category
- Solid observed track, dashed forecast track, and semi-transparent uncertainty cone
- Click any marker for storm name, category, wind speed, pressure, and advisory
Sources & Filters
- NHC/JTWC via Esri ArcGIS — global tropical cyclone data with track geometry and forecast cones
- Filter by min category (TD – Cat 5), ocean basin, and min wind speed
Events list
- Each entry shows category badge, storm name, basin, wind speed, and pressure
- Severity pills filter the list (Major, Hurricane, Storm)
Tracks military installations worldwide from OSM Overpass, NTAD (US DoD), and Covert Cabal.
How to use:
Map
- Diamond markers colour-coded by facility type — clustered at low zoom
- Click any marker for type, name, operator, branch, source, and external links
- Overlapping installations across sources deduplicated within 5 km
Sources & Filters
- OSM Overpass (global), NTAD (US DoD), Covert Cabal (static)
- Show Fortifications toggle loads bunkers and trenches (~132K features) on demand
- Resolve locations for city and country names via reverse geocoding
Events list
- 3-level drill-down: group cards (by type or country) → installation list → detail view
- Installation list with search bar; detail view shows stats grid with external links
Tracks the International Space Station in real time — position, altitude, velocity, and predicted orbital path.
How to use:
Marker & Popup
- Satellite icon marks the current ISS position
- Click for latitude, longitude, altitude, velocity, and visibility — updates live
Trajectory
- A cyan line traces the predicted orbital path ~100 minutes ahead
Data from WhereTheISS.at API
Global tectonic plate boundaries for geological context — bundled offline.
How to use:
Map
- Semi-transparent boundary lines in the module accent colour
- Layer with seismic data to see how earthquake activity aligns with plate edges
Data & Attribution
- Boundary data from GPlates by the EarthByte Group, University of Sydney
- 300 boundary features — subduction zones, mid-ocean ridges, transforms, continental rifts, and more
- Bundled at build time — works fully offline