ARCUS
observed-flow plume tracer · v0
Disperse
Dispersion backend
Altitude band
Duration (min)
Particles
(50–500)
Turbulence
Calm
Moderate
Gusty
Click the map to set source
Preview runoff (terrain)
Shows how liquid contaminants flow via terrain drainage.
Promote to Incident
Incident kind
Structure fire
Hazmat / chemical spill
Vehicle fire
Wildfire
UN number
(optional — hazmat only)
4-digit code only — material name is looked up automatically.
Fire incident — plume + structure OSM context.
Promote to Incident
Click anywhere on the map to drop a release source.