Occurrences during the operation of an aircraft in which any person involved suffers death or serious injury or in which the aircraft receives substantial damage (EMA).

Confirmed location of a maritime incident involving the loss of shipping containers overboard.

Unconfirmed location of a maritime incident involving the loss of shipping containers overboard.

The overflowing by water of the normal confines of a stream or other body of water, or the accumulation of water by drainage over areas which are not normally submerged (WMO).

Confirmed location of a gas leak incident.

Unconfirmed location of a gas leak incident.

Any unplanned event requiring emergency intervention (AIIMS).

Any unplanned event requiring emergency intervention (AIIMS).

A landslide is the movement of rock, debris or earth down a slope.
They result from the failure of the materials which make up the hill slope and are driven by the force of
gravity. Landslides are known also as landslips, slumps or slope failure
(Geoscience Australia)

A landslide is the movement of rock, debris or earth down a slope.
They result from the failure of the materials which make up the hill slope and are driven by the force of
gravity. Landslides are known also as landslips, slumps or slope failure
(Geoscience Australia)

Occurrences during the operation of a boat or ship in which any person
involved suffers death or serious injury or in which the boat or ship receives substantial damage
(modification of EMA Air Incident definition).

Occurrences during the operation of a boat or ship in which any person
involved suffers death or serious injury or in which the boat or ship receives substantial damage
(modification of EMA Air Incident definition).

The confirmed location for the source of an oil spill incident regardless of source.

The unconfirmed location of an oil spill incident regardless of source when the exact location or status of a spill cannot be yet confirmed. Once the location has been confirmed, the symbol needs to be changed to Oil Spill Incident (confirmed).

Occurrences during the operation of a train in which any person involved
suffers death or serious injury or in which the train receives substantial
damage (modification of EMA Air Incident definition).

Occurrences during the operation of a train in which any person involved
suffers death or serious injury or in which the train receives substantial
damage (modification of EMA Air Incident definition).

The difference between the actual water level under influence of a meteorological disturbance (storm tide) and the level which would have been attained in the absence
of the meteorological disturbance (i.e. astronomical tide) (WMO).

The difference between the actual water level under influence of a meteorological disturbance (storm tide) and the level which would have been attained in the absence
of the meteorological disturbance (i.e. astronomical tide) (WMO).

Sudden electrical discharges manifested by a flash of light (lightning) and a sharp or rumbling
sound (thunder) (WMO).
Often accompanied by squalls and/or precipitation (Rain and/or Hail)" (BoM Weather Service Handbook 1992).

Sudden electrical discharges manifested by a flash of light (lightning) and a sharp or rumbling
sound (thunder) (WMO).
Often accompanied by squalls and/or precipitation (Rain and/or Hail)" (BoM Weather Service Handbook 1992).

Tropical cyclones are intense low pressure systems which form over
warm ocean waters at low
latitudes. Tropical cyclones are associated with strong winds, torrential rain and storm surges (in coastal areas) (BoM).

Tropical cyclones are intense low pressure systems which form over
warm ocean waters at low
latitudes. Tropical cyclones are associated with strong winds, torrential rain and storm surges (in coastal areas) (BoM).

A tsunami is a series of ocean waves with very long wavelengths (typically
hundreds of kilometres) caused by large-scale disturbances of the ocean
(BoM).

A tsunami is a series of ocean waves with very long wavelengths (typically
hundreds of kilometres) caused by large-scale disturbances of the ocean
(BoM).

Occurrences during the operation of a wheeled or tracked vehicle in which
any person involved suffers death or serious injury or in which the vehicle receives substantial damage (modification of EMA Air Incident).

Occurrences during the operation of a wheeled or tracked vehicle in which
any person involved suffers death or serious injury or in which the vehicle receives substantial damage (modification of EMA Air Incident).