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1. HAZARD
(UNDRR)
- a dangerous phenomenon, substance, human
activity or condition that may cause loss of life, injury,
or other health impacts, property damage, loss of
livelihood and services, social and economics
disruption, or environmental damage.

2. What is the difference between a
HAZARD and a DISASTER?
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Hazard – has only the potential to cause destruction
or negative impacts to life and property.
Disaster – is a hazard that already occurred and
already caused destruction and devastating impacts.
- in other words, a disaster is a hazard that
affected a vulnerable population or assets.

3. Classification of hazards
Hazards can be classified into three main categories:
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1.Natural Hazards
2.Quasi-natural Hazards
3.Man-made/human-induced/Anthropogenic
Hazards

4. 1.Natural Hazards
Classification of hazards
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– naturally occurring
phenomena or processes.
Floods Typhoon

5. 2. Quai-natural Hazards
– hazards that are outcomes of the
interaction of natural phenomena
and man-made activities.
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Smog
Desertification

6. 3. Man-made/Human-
induced/Anthropogenic Hazards
- those that result from human activities
and actions.
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Car Accidents Toxic Waste

7. In other references, hazards can be classified into
three categories:
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1. Natural Hazards
2. Technological Hazards
3. Environmental Degradation

8. A. Geologic hazards
– natural phenomena that occur in the
Earth’s crust.
Examples:
• Earthquakes
• Tsunami
• volcanic eruptions
• mass movement such as landslides and rockslides
• subsidence
• liquefaction
1. Natural Hazards
- naturally occurring phenomena.
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9. Liquefaction Land Subsidence

10. B. Hydrometeorological Hazards
- are atmospheric, hydrological, and
oceanographic natural processes.
Examples:
• Tropical cyclones: tropical depression, storms,
typhoons, and super typhoons
• Hurricane
• Floods and flash floods
• Tornado
• Hailstorm
• Drought
• Blizzards
1. Natural Hazards
- naturally occurring phenomena.
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11. Blizzards Hailstorm

12. C. Biological Hazards
- living thing things or substances from living
things that can cause illnesses and diseases
or any harm.
Examples:
• Outbreaks of epidemic diseases in humans, animals,
and plants
• infestations
1. Natural Hazards
- naturally occurring phenomena.
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13. Lumpy skin disease Leaf spot disease

14. Examples:
• Nuclear explosion
• Industrial pollution
• Vehicular accidents
• Industrial explosions
• Fires
• Collapsed of buildings
Second Problem
2. Technological Hazards
- are man-made hazards caused by technological,
infrastructure, or industrial accidents or failures.
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15. Nuclear explosion
Building partially
collapses in Ph

16. Examples:
• Deforestation
• Land degradation
• Loss of biodiversity
• Land, Water, and Air pollution
• Climate change
• Ozone depletion
Second Problem
3. Environmental Degradation
- processes caused or induced by human
activities or in combination with natural hazards.
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17. Loss of Biodiversity

18. 1. Slow onset hazards
- hazards that have early signs or
indicators before its occurrence.
- occurs slowly and takes years to
develop.
Examples:
• Epidemics
• Droughts
• Rises in sea level
Types of Hazards
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19. 2. Rapid or sudden onset hazards
- hazards that occur or strike without any
prior signs or warnings.
- emerges quickly or unexpectedly.
Examples:
• Earthquake
• Landslide
• Wildfires
• Transport accident
• Critical infrastructure failure
Types of Hazards
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20. Impacts of Various Hazards
- death and injuries (casualties) of people, and
destruction or damages to properties and infrastructure.
1. PHYSICAL IMPACT
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21. Impacts of Various Hazards
2. PSYCHOLOGICAL IMPACT
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- psychological trauma, chronic anxiety, depression, and
other emotional and mental disorders.

22. Impacts of Various Hazards
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3. SOCIO-CULTURAL IMPACT
- migration, alteration of traditional social
status, loss of cultural identity, ethnic conflicts, sexual
abuse, and domestic violence, and changes in lifestyle.

23. Impacts of Various Hazards
- loss of employment, livelihood and property/land.
4. ECONOMIC IMPACT
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24. Impacts of Various Hazards
5. ENVIRONMENTAL IMPACT
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- environmental contamination, loss of forests and
natural rivers.

25. Impacts of Various Hazards
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6. BIOLOGICAL IMPACT
- spread of epidemic diseases to people, flora,
and fauna.

26. THANK YOU