General Classification
Disaster Group Disaster Subgroup Definition Disaster Main Type
Natural Geophysical A hazard originating from solid earth. This term is used interchangeably with the term geological hazard. Earthquake
Mass Movement
Volcanic activity
Meteorological A hazard caused by short-lived, micro- to meso-scale extreme weather and atmospheric conditions that last from minutes to days. Extreme Temperature
Fog
Storm
Hydrological A hazard caused by the occurrence, movement, and distribution of surface and subsurface freshwater and saltwater. Flood
Landslide
Wave action
Climatological A hazard caused by long-lived, meso- to macro-scale atmospheric processes ranging from
intra-seasonal to multi-decadal climate variability.
Drought
Glacial Lake Outburst
Wildfire
Biological A hazard caused by the exposure to living organisms and their toxic substances (e.g. venom, mold) or vector-borne diseases that they may carry. Examples are venomous wildlife and insects, poisonous plants, and mosquitoes carrying disease-causing agents such as parasites, bacteria, or viruses (e.g. malaria). Epidemic
Insect infestation
Animal Accident
Extraterrestrial A hazard caused by asteroids, meteoroids, and comets as they pass near-earth, enter the Earth’s atmosphere, and/or strike the Earth, and by changes in interplanetary conditions that effect the Earth’s magnetosphere, ionosphere, and thermosphere. Impact
Space weather
Technological Industrial accident Chemical spill
Collapse
Explosion
Fire
Gas leak
Poisoning
Radiation
Other
Transport accident Air
Road
Rail
Water
Miscelleanous accident Collapse
Explosion
Fire
Other

Geophysical

Disaster Generic Group Disaster Subgroup Disaster Main Type Disaster Sub-Type Disaster Sub-Sub-Type
Natural Disaster Geophysical Earthquake Ground Shaking
Tsunami
Mass Movement
Volcanic activity Ash fall
Lahar
Pyroclastic flow
Lava flow

Meteorological

Disaster Generic Group Disaster Subgroup Disaster Main Type Disaster Sub-Type Disaster Sub-Sub-Type
Natural Disaster Meteorological Storm Extra-tropical storm
Tropical storm
Convective Storm Derecho
Hail
Lightning/thunderstorm
Rain
Tornado
Sand/dust storm
Winter storm/blizzard
Storm/surge
Wind
Extreme temperature Cold wave
Heat wave
Severe winter conditions Snow/ice
Frost/freeze
Fog

Hydrological

Disaster Generic Group Disaster Subgroup Disaster Main Type Disaster Sub-Type Disaster Sub-Sub-Type
Natural Disaster Hydrological Flood Coastal flood
Riverine flood
Flash flood
Ice jam flood
Landslide Avalanche (snow, debris, mudflow, rockfall)
Wave action Rogue wave
Seiche

Climatological

Disaster Generic Group Disaster Sub-Group Disaster Main Type Disaster Sub-Type Disaster Sub-Sub-Type
Natural Disaster Climatological Drought
Glacial Lake Outburst
Wildfire Forest Fire
Land fire: Brush, bush,
Pasture

Biological

Disaster Generic Group Disaster Sub-Group Disaster Main Type Disaster Sub-Type Disaster Sub-Sub-Type
Natural Disaster Biological Epidemic Viral Disease
Bacterial Disease
Parasitic Disease
Fungal Disease
Prion Disease
Insect
infestation
Grasshoper
Locust
Animal Accident

Extraterrestrial

Disaster Generic Group Disaster Sub-Group Disaster Main Type Disaster Sub-Type Disaster Sub-Sub-Type
Natural Disaster Extraterrestrial Impact Airburst
Space weather Energetic particles
Geomagnetic storm
Shockwave
General Classification
Disaster Group Disaster Subgroup Definition Disaster Main Type
Natural Geophysical A hazard originating
from solid earth. This term is used interchangeably with the term geological
hazard.
Earthquake
Mass Movement
Volcanic activity
Meteorological A hazard caused by short-lived, micro-
to meso-scale extreme weather and atmospheric conditions that last from
minutes to days.
Extreme Temperature
Fog
Storm
Hydrological A hazard caused
by the occurrence, movement, and distribution of surface and subsurface
freshwater and saltwater.
Flood
Landslide
Wave action
Climatological A hazard caused by long-lived, meso-
to macro-scale atmospheric processes ranging from
intra-seasonal to multi-decadal climate variability.
Drought
Glacial Lake Outburst
Wildfire
Biological A hazard caused by the exposure to living
organisms and their toxic substances (e.g. venom, mold) or vector-borne
diseases that they may carry. Examples are venomous wildlife and insects,
poisonous plants, and mosquitoes carrying disease-causing agents such as
parasites, bacteria, or viruses (e.g. malaria).
Epidemic
Insect infestation
Animal Accident
Extraterrestrial A hazard caused by asteroids, meteoroids,
and comets as they pass near-earth, enter the Earth’s atmosphere, and/or
strike the Earth, and by changes in interplanetary conditions that effect
the Earth’s magnetosphere, ionosphere, and thermosphere.
Impact
Space weather
Technological Industrial accident Chemical spill
Collapse
Explosion
Fire
Gas leak
Poisoning
Radiation
Other
Transport accident Air
Road
Rail
Water
Miscelleanous accident Collapse
Explosion
Fire
Other

Geophysical

Disaster Generic Group Disaster Subgroup Disaster Main Type Disaster Sub-Type Disaster Sub-Sub-Type
Natural Disaster Geophysical Earthquake Ground Shaking
Tsunami
Mass Movement
Volcanic activity Ash fall
Lahar
Pyroclastic flow
Lava flow

Meteorological

Disaster Generic Group Disaster Subgroup Disaster Main Type Disaster Sub-Type Disaster Sub-Sub-Type
Natural Disaster Meteorological Storm Extra-tropical storm
Tropical storm
Convective Storm Derecho
Hail
Lightning/thunderstorm
Rain
Tornado
Sand/dust storm
Winter storm/blizzard
Storm/surge
Wind
Extreme temperature Cold wave
Heat wave
Severe winter conditions Snow/ice
Frost/freeze
Fog

Hydrological

Disaster Generic Group Disaster Subgroup Disaster Main Type Disaster Sub-Type Disaster Sub-Sub-Type
Natural Disaster Hydrological Flood Coastal flood
Riverine flood
Flash flood
Ice jam flood
Landslide Avalanche (snow, debris, mudflow, rockfall)
Wave action Rogue wave
Seiche

Climatological

Disaster Generic Group Disaster Sub-Group Disaster Main Type Disaster Sub-Type Disaster Sub-Sub-Type
Natural Disaster Climatological Drought
Glacial Lake Outburst
Wildfire Forest Fire
Land fire: Brush, bush,
Pasture

Biological

Disaster Generic Group Disaster Sub-Group Disaster Main Type Disaster Sub-Type Disaster Sub-Sub-Type
Natural Disaster Biological Epidemic Viral Disease
Bacterial Disease
Parasitic Disease
Fungal Disease
Prion Disease
Insect
infestation
Grasshoper
Locust
Animal Accident


Extraterrestrial

Disaster Generic Group Disaster Sub-Group Disaster Main Type Disaster Sub-Type Disaster Sub-Sub-Type
Natural Disaster Extraterrestrial Impact Airburst
Space weather Energetic particles
Geomagnetic storm
Shockwave
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