Natural hazards can be placed into two categories – tectonic hazards and climatic hazards.

Erosion hazard areas are areas potentially subject to land regression or retreat due to a combination of geologic, seismic, hydrologic, or manmade factors. Erosion hazard areas can be identified by indicators of active land retreat as a result of fluvial processes.

Climatic hazards are agents of disaster in terms of what they may do to human settlements or to the environment. Potentially hazardous atmospheric phenomena include tropical cyclones, thunderstorms, tornadoes, drought, rain, hail, snow, lightning, fog, wind, temperature extremes, air pollution, and climatic change.

Extreme events and abrupt changes to the climate system. In addition, climate hazards are caused by unstable ice sheets, major ecosystem changes and abrupt changes in the circulation in the atmosphere or the ocean. …

Natural hazards are naturally occurring physical phenomena caused either by rapid or slow onset events which can be geophysical (earthquakes, landslides, tsunamis and volcanic activity), hydrological (avalanches and floods), climatological (extreme temperatures, drought and wildfires), meteorological (cyclones and …

The six main categories of hazards are:

• Biological. Biological hazards include viruses, bacteria, insects, animals, etc., that can cause adverse health impacts.
• Chemical. Chemical hazards are hazardous substances that can cause harm.
• Physical.
• Safety.
• Ergonomic.
• Psychosocial.

A hazard is any source of potential damage, harm or adverse health effects on something or someone. Basically, a hazard is the potential for harm or an adverse effect (for example, to people as health effects, to organizations as property or equipment losses, or to the environment).

Examples include industrial pollution, ionizing radiation, toxic wastes, dam failures, transport accidents, factory explosions, fires and chemical spills.

A natural hazard is a threat of a naturally occurring event will have a negative effect on humans. This negative effect is what we call a natural disaster. In other words when the hazardous threat actually happens and harms humans, we call the event a natural disaster.

In simple terms, a hazard is a dangerous situation or event that carries a threat to humans. A disaster is an event that actually harms humans and disrupts the operations of society. Hazards will be considered disasters once they affect humans, but if they occur in an unpopulated area, they will remain hazards.

A hazard is a situation where there is a threat to life, health, environment or property. These hazards are termed as disasters when they cause widespread destruction of property and human lives. Once a hazard becomes active and is no longer just a threat, it becomes a disaster.

World’s Worst Natural Disasters

1. Haiti Earthquake of 2010. First, we will take a look at the Haiti Earthquake of 2010.
2. Hurricane Katrina of 2005.
3. Hurricane Andrew of 1993.
4. Tohoku Earthquake and Tsunami.
5. Tsunami of 2011.
6. Tangshan Earthquake.
7. Cyclone Nargis.
8. 2008 China Earthquake.

A Running List of Record-Breaking Natural Disasters in 2020

• Hurricanes. The 2020 Atlantic hurricane season was a doozy.
• Wildfires. Wildfires have taken an enormous toll on western U.S. communities, both from flames and harmful smoke. California bore the worst of it.
• Rain and Flooding.
• Heat.
• Overall.

These are the 10 deadliest natural disasters of 2020

• January 2020: Flash Floods in Indonesia Kills 66 People.
• January 2020: Earthquake kills 41 People in Turkey.
• January 2020: Volcano Eruption in the Philippines Kills 39 People.
• November 2020: Typhoon Kills 42 People in Philippines.

Just four countries — the Philippines, China, Japan and Bangladesh — are the targets of more natural disasters than anywhere else on Earth. They are the world’s riskiest countries and are the most vulnerable to storms, floods, earthquakes, volcanoes, tsunamis, wildfires and landslides, among other calamities.

Countries with the most natural disasters in 2019