What Is a Disaster? How It Differs from "Public Disaster" + Key Hazard Terms
Quick summary A disaster is a hazard that causes serious harm to life and property. It can be natural, such as floods, storms and earthquakes, or man-made, such as fires or major accidents. Thai law uses the term "public disaster" (satharanaphai) under the Disaster Prevention and Mitigation Act B.E. 2550 (2007), which covers fire, windstorms, floods, drought, epidemics and other hazards that affect the public.
When you follow the news in the rainy season, you hear Thai words for disaster, public disaster, flood and storm used almost interchangeably, and it is easy to get confused. This article explains what each term means according to official Thai sources, how the words are built so they are easy to remember, and how to prepare once you know a hazard is coming.
What Is a Disaster?
The Thai word for disaster, "phaiyaphibat", comes from "phai" meaning danger and "phibat" meaning ruin or great loss. Together they mean a danger that causes serious, widespread damage.
The Office of the Royal Society explains that "phaiyaphibat" and "phibatphai" mean the same thing and differ only in word order, so either can be used. Both cover natural hazards such as floods, earthquakes, cyclones and volcanic eruptions, as well as man-made ones such as plane crashes, shipwrecks and war.
Disaster vs. public disaster: what is the difference?
In everyday speech the two words are interchangeable, but in legal language Thailand uses "public disaster". Section 4 of the Disaster Prevention and Mitigation Act B.E. 2550 (published in the Royal Gazette, Vol. 124, Part 52 Kor, 7 September 2007) defines it as the following hazards
- Fire, windstorms, floods and drought
- Human epidemics, animal epidemics and aquatic animal epidemics
- Plant pest outbreaks
- Other hazards that affect the public, whether natural, caused by someone, accidental or from any other cause
- Including air raids and sabotage
The main agency responsible is the Department of Disaster Prevention and Mitigation (DDPM), Ministry of Interior, which runs the 24-hour 1784 hotline.
How many types of disasters are there?
By cause, disasters fall into 2 main groups
| Group | Examples | Characteristics |
|---|---|---|
| Natural hazards | Floods, windstorms, drought, landslides, earthquakes, tsunamis, cold spells | Caused by weather and geology; some, such as storms and heavy rain, can be forecast in advance |
| Man-made hazards | Fires, major accidents, chemical spills, sabotage | Largely preventable through care and safety measures |
Some events come from both at once, for example floods made worse because drains are blocked, or upstream forests are cleared so the soil can no longer hold water. That is why preparedness means watching both the weather and your surroundings.
Hazard terms worth knowing, with word roots
Many words in this group come from Pali and Sanskrit. If you know the meaning of the first part, you can guess the whole word right away.
| Term | First part means | Meaning | English |
|---|---|---|---|
| Utokkaphai | Utok = water | Hazards from floods, flash floods and overflowing rivers | Flood |
| Watapai | Wat = wind | Hazards from windstorms | Storm, Windstorm |
| Akkhiphai | Akkhi = fire | Hazards from fire | Fire |
| Phai laeng | Laeng = lack of water | A long break in the rain leaves too little water | Drought |
| Thoraniphibatphai | Thorani = land | Hazards from the land, such as landslides, earthquakes and sinkholes | Geohazard |
| Phai nao | Nao = cold | Extreme cold that affects health and crops | Cold wave |
To understand floods in detail, read on at What Is Utokkaphai (Flood)? For storms and their intensity levels, read What Is Watapai (Windstorm)?
What can you do before a disaster?
Good preparation starts before the hazard arrives. Here are 5 things you can do right now.
- Follow warning announcements from the Thai Meteorological Department and DDPM regularly. Check rain clouds on therain radar on the homepage
- Prepare an emergency bag with drinking water, dry food, a flashlight, your regular medicines and important documents in a waterproof bag
- Write emergency numbers on paper in case your phone battery runs out. Seeall emergency hotlines
- Plan evacuation routes and set at least 2 meeting points for your family
- Open situation-checking tools such as the flood-checking tools before heading out during heavy rain
Ask E26BLC for free on Messenger, or check live flood reports and rain radar before you travel.
Frequently asked questions
Are "phaiyaphibat" and "phibatphai" different?
They mean the same thing. The Office of the Royal Society explains they differ only in word order, so either can be used.
How is a public disaster different from a disaster?
"Public disaster" is the legal term under the Disaster Prevention and Mitigation Act B.E. 2550, while "disaster" is the everyday word. Their meanings are close and they are interchangeable.
How are floods and windstorms different?
A flood is a hazard from water, while a windstorm is a hazard from wind. The two often come together, because storms bring heavy rain that leads to flooding.
What disasters are most common in Thailand?
The most common are floods in the rainy season, windstorms from tropical cyclones and summer storms, drought in the dry season, and fires, which can happen all year round.
What number should I call in a disaster?
For help, call the DDPM hotline 1784. For medical emergencies call 1669, for urgent incidents call 191, and for fires call 199.
Where can I follow the situation?
Check announcements directly from the Thai Meteorological Department and DDPM, or see thelive situation boardandNewson this site, which gathers official data in one place.
Summary
"Disaster" is the broad word for any serious hazard, and "public disaster" is the same idea in legal language. Sub-terms such as flood, windstorm and fire are easy to remember by their first part: water, wind and fire. Knowing these meanings helps you understand warning announcements and prepare the right way before a hazard arrives.
Sources: Disaster Prevention and Mitigation Act B.E. 2550 (2007)
Office of the Royal Society: phaiyaphibat or phibatphai
Department of Disaster Prevention and Mitigation
Compiled by E26BLC
Ask about anything: floods, evacuation routes and two-way radio
ArticlesRelated
Disaster KnowledgeSpace war: satellites under attack and GPS outages. What should people in Thailand prepare?Space warfare means attacks on satellites and jamming of GPS signals, which already happens on flight routes near Thailand. See how it affects phone maps, banks and mobile networks, and how to prepare backups.Read more 
Disaster KnowledgeCyber war: what it is, how it affects Thailand and how to prepareCyber war means attacks on computer systems that can take down websites, banking apps, power or phone networks. Thailand was hit in 2025. Learn how to keep cash, use two-factor logins, spot fake news and where to report: 1441.Read more 
Disaster KnowledgeGlobal threats in 2027: what the world is warning about and how Thai civilians can prepareA summary of 2027 global risk warnings from the WEF, the Doomsday Clock, the EIA and BMI, what they mean for people in Thailand, and a 4-week preparation plan.Read more 
