CHIANG RAI – Thailand isn’t equally exposed to earthquakes. Risk varies with nearby active faults, shaking from earthquakes across neighboring borders, local ground conditions, and building design, so a map of fault lines can’t tell you exactly how strongly a particular place will shake.
A higher hazard rating also doesn’t mean an earthquake is due soon. The Department of Mineral Resources’ active-fault dataset lists 16 fault groups and was last updated on December 1, 2023. This guide compares regional exposure and offers practical ways to prepare, whether you live in Thailand or are visiting.
Start with the differences between Thailand’s regions, then use those details to plan for the conditions where you’ll be. For local guidance, see this Chiang Rai earthquake safety guide.
Key Takeaways
- Northern Thailand has the largest concentration of mapped active fault groups; a Thailand seismicity review also identifies northern and western zones as mostly active.
- Western Thailand faces exposure from the Mae, Si Sawat, and Three Pagodas fault groups, along with earthquakes across Myanmar.
- Bangkok has fewer nearby faults, but soft basin sediments can amplify long-period shaking, especially in tall buildings.
- Southern Thailand’s Ranong and Khlong Marui fault groups create localized exposure, so risk varies across the region.
- Hazard maps show potential, not timing. Check local alerts and follow Chiang Rai earthquake readiness guidance when preparing in the north.
Earthquake Risk Across Thailand’s Regions
Thailand’s earthquake exposure changes across regions because active faults, distant earthquakes, local soils, and building design all affect shaking. The Department of Mineral Resources’ active-fault dataset, updated December 1, 2023, maps fault groups, while Thai Meteorological Department records track actual earthquake events. Neither a fault map nor a regional label can predict when an earthquake will happen or how strongly a specific building will shake.
Northern Thailand has the clearest concentration of mapped faults
Northern Thailand has the largest cluster of mapped active fault groups, including Mae Chan, Mae Ing, Phayao, Mae Tha, Pua, Thoen, Mae Hong Son, Uttaradit, and Phetchabun. Their mapped traces cross parts of the north, but exposure varies between communities and even within the same province.
People closer to an active fault may experience stronger local shaking during an earthquake on that fault. However, proximity alone doesn’t determine damage: the quake’s depth and size, local ground conditions, and building construction also matter. A fault map shows where mapped faults lie; it does not forecast the date or likelihood of the next earthquake. For a local example, see this Mae Suai earthquake report.
Western Thailand can feel earthquakes from both sides of the border
The Moei, Si Sawat, and Three Pagodas fault groups are associated with western Thailand. At the same time, earthquakes in Myanmar can send shaking across the border, so a felt tremor doesn’t necessarily mean its source was inside Thailand.
A fault’s mapped location and the area affected by its shaking are different things. Seismic waves can travel well beyond the fault trace, with the strength people feel varying by distance, depth, and local ground. TMD earthquake records help distinguish events centered in Thailand from those across nearby borders.
Southern Thailand has mapped faults, but exposure varies by location
The Ranong and Khlong Marui fault groups are associated with parts of southern Thailand. Their presence indicates potential for earthquake activity, but it doesn’t mean every southern community faces the same level of exposure.
Local risk depends on the distance to a fault and the ground beneath a building, among other factors. Coastal location by itself isn’t proof of high earthquake risk, and a regional map can’t replace site-specific information. Check mapped fault data alongside local conditions rather than treating the entire peninsula as one uniform hazard zone.
Bangkok, central Thailand, and the northeast face different concerns
Bangkok lies far from many mapped fault traces, yet its soft basin sediments can amplify and prolong some earthquake shaking. Longer-period motion is particularly relevant to tall buildings, which can respond differently from shorter structures. Research on ground motion in the Bangkok Basin describes these site effects during the 2025 Mandalay earthquake; see the observed Thailand basin responses.
Central and northeastern Thailand are less directly associated with the fault groups listed above, but that doesn’t make them risk-free. Earthquakes outside a region can still be felt there. Across the country, distance, soil, and building type shape how shaking affects a particular place.
How to Read Thailand’s Earthquake Maps and Fault Data
Thailand’s active-fault maps and earthquake records answer different questions. The Department of Mineral Resources (DMR) maps known fault groups, while the Thai Meteorological Department (TMD) reports earthquakes that have occurred. Use both to understand local exposure, and check each dataset’s date before relying on it.
A mapped active fault is not an earthquake forecast
An active fault is a break in Earth’s crust with evidence of movement in recent geological time. One commonly used scientific basis is evidence that the fault moved within the past 10,000 years. DMR’s active-fault map and report summarize mapped fault locations, but the map is not a schedule of future earthquakes.
A mapped fault near a home, hotel, or workplace is useful for screening and planning. However, distance from a fault does not provide an exact probability, date, or magnitude for a future quake. Fault lines also reflect the limits of available mapping and field evidence, so don’t treat an unmapped area as proof that shaking cannot occur.
Check the dataset’s publication or update date. Thailand’s fault-group listings have changed across older and newer sources, so the number of groups may differ by map version. The DMR dataset referenced in this guide was last updated on December 1, 2023. When comparing a map with another report, confirm that both use the same version before drawing conclusions.
Check the epicenter, depth, and local ground conditions
TMD earthquake records report an event’s location and key measurements. Start with the epicenter, the point on the surface above where the earthquake began, then note the magnitude and depth. Compare the epicenter’s distance from your location; a nearby shallow event may produce different shaking from a deeper or more distant one.
Next, check whether the epicenter is in Thailand or across a border. TMD records include events in nearby countries, so an earthquake felt in Thailand may have originated in Myanmar, Laos, Vietnam, or Indonesia. The event’s location, rather than where people felt shaking, identifies its source.
Local ground can change how shaking feels. Soft soil and basin sediments may amplify or prolong some motions, while buildings respond differently depending on their design and height. As a result, two places at similar distances from an epicenter may experience different levels of shaking. For local updates and preparedness information, see Chiang Rai’s disaster warning system.
What Thailand’s earthquake history can and cannot tell us
Past earthquakes show that damaging shaking is possible in Thailand and that tremors can cross national borders. They also help distinguish earthquakes centered inside the country from those felt here after starting elsewhere. However, the record cannot predict when the next earthquake will happen or how strongly a specific building will shake.
Separate local earthquakes from shaking that travels across borders
The earthquake’s epicenter identifies where it began, not every place where people felt it. Seismic waves travel outward from the source, and their effects depend on factors such as distance, depth, local ground, and building design. That is why residents can feel an earthquake whose epicenter lies in a neighboring country.
Thailand’s major recent example of a locally centered earthquake occurred on May 5, 2014. The Thai Meteorological Department (TMD) reported a magnitude 6.3 earthquake near Mae Lao in Chiang Rai Province, with the epicenter about 9 kilometers south of Mae Lao. The quake caused damage in the area; contemporary reporting on the TMD’s event record also noted that shaking reached parts of Myanmar.
A more recent felt event began outside Thailand. On June 3, 2025, the TMD’s Earthquake Monitoring Division recorded a magnitude 4.6 earthquake in Myanmar, about 95 kilometers northwest of Mae Sai. Residents in Mae Sai, Mae Chan, and Chiang Rai city reported mild tremors. The source was in Myanmar, so it should not be described as an earthquake centered in Thailand. See the report on the Myanmar earthquake felt in Chiang Rai.
When checking an event, look at the reported location and magnitude, then compare them with where shaking was felt. TMD records include earthquakes in Thailand and nearby countries, so the felt area alone does not identify the source. In addition, an event’s magnitude describes the earthquake itself, while local shaking can vary from place to place.
Together, historical and recent records show where earthquakes have occurred and how far their shaking has been reported. They help explain regional exposure, but they cannot say when or where the next quake will strike.
How residents and travelers can prepare for earthquake shaking
Earthquake exposure varies across Thailand, so tailor your plan to where you live or are staying. A few minutes of preparation can make it easier to act calmly, whether you’re at home, in a hotel, or at work.
Make a simple plan before shaking starts
Pick safe spots in the rooms where you spend time. Look for sturdy tables or desks that can protect you from falling objects, and keep clear of windows, mirrors, and tall furniture. Secure heavy items that could topple during shaking.
Keep a small supply kit where you can reach it. Include water, a flashlight, a basic first-aid kit, essential medicines, a portable phone charger, and copies of key contact details. Save emergency contacts on your phone, but also write them down in case your battery runs out or the network is unavailable.
Learn the building’s exit routes and where stairs lead before you need them. In a hotel, note the evacuation map and identify stairwells; at work, find out where staff should gather after an evacuation. People in higher-exposure areas and anyone in a tall building should review local building and workplace plans, since procedures can differ by site. Chiang Rai residents can also review these earthquake safety tips.
Know what to do during and after an earthquake
When shaking starts, drop, cover, and hold on. Get low, take cover under a sturdy table or desk, and hold it until the shaking stops. If there’s no cover nearby, protect your head and neck with your arms. Stay away from windows, and don’t run outside or use an elevator while the building is shaking. Ready.gov’s earthquake guidance explains these steps in more detail.
Afterward, check yourself and others for injuries, then look for hazards such as broken glass, fallen objects, damaged walls, or a smell of gas. Leave a damaged building by the stairs if it is safe to do so, and avoid re-entering until local officials say it’s safe. If you’re outside, move away from buildings, walls, and power lines.
Aftershocks can follow the first quake, so be ready to protect yourself again. Keep your phone available for official updates from Thailand’s Department of Disaster Prevention and Mitigation (DDPM) and the Thai Meteorological Department (TMD). Follow current local instructions, since the right response can vary by location and building.
Frequently Asked Questions
Thailand’s earthquake risk depends on more than distance from mapped faults. These answers clarify what hazard maps can tell you, what they can’t predict, and where to check reliable event information.
Is any part of Thailand completely safe from earthquakes?
No region label guarantees zero shaking. Areas farther from mapped active faults may have lower local exposure, but earthquakes in neighboring countries can still send seismic waves into Thailand. Local soil and building design also affect how strongly a particular place responds.
Can experts predict when Thailand will have its next earthquake?
Scientists can identify areas with known faults and estimate potential shaking, but they can’t name the exact date, location, or magnitude of the next earthquake. Hazard analysis helps compare possible risks, as in this Thailand seismic hazard study. It is not a countdown or a forecast of a specific event.
Could an earthquake in Myanmar or Laos be felt in Thailand?
Yes. Whether people in Thailand feel an earthquake across the border depends on its magnitude, depth, distance, and local ground conditions. Check the event’s recorded epicenter in the Thai Meteorological Department (TMD) report before assuming it began in Thailand.
Does Bangkok face earthquake risk even though it is far from many faults?
Yes. Bangkok’s soft basin sediments can amplify or prolong some shaking, including motion from earthquakes at a distance; tall buildings may respond differently from shorter structures. The effect varies with the earthquake, the ground beneath a site, and the building itself. Read more about Bangkok’s earthquake risk from soft soil.
Where can I check current earthquake reports in Thailand?
Check the Thai Meteorological Department’s official earthquake reports for event time, magnitude, depth, and recorded location. For mapped faults and hazard data, consult the Department of Mineral Resources (DMR), and confirm the dataset’s update date before comparing it with other maps. Thailand’s disaster monitoring and alert network involves multiple agencies, so verify an event’s epicenter and details against the relevant official report.
