EARTHQUAKE IN MEXICO VIA THE NATIONAL SEISMOLOGICAL SERVICE
In the context of Plate Tectonics, Mexico is located in the so-called Ring of Fire, where a large part of the seismic movements worldwide are recorded. The country is located on the North American Plate, bordered on its southern and western portion by the Cocos, Rivera, and Pacific plates.
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Mexico is one of the countries in the world with the highest seismic activity, as according to statistics, more than 90 earthquakes per year with a magnitude greater than 4 on the Richter scale are recorded, which is equivalent to 60% of all seismic movements recorded worldwide.
Based on statistical records, the states with the highest risk and where large magnitude earthquakes that can affect Mexico City occur are: Jalisco, Colima, Michoacán, Guerrero, Oaxaca, Puebla, State of Mexico, and Veracruz.
How to know if an earthquake is strong?
There are two ways:
– Magnitude, measured on the Richter scale, indicates the energy released.
– Intensity, measured on the Mercalli scale, measures the impact on people and structures.
What should my emergency backpack have?
It should contain the essentials to survive in the first hours after an earthquake:
– Hygiene items
– First aid kit with bandages, alcohol, gauze, pills, among others
– Warm clothing
– Non-perishable food such as tuna, energy bars, chocolates, and nuts, as well as cash
– Radio or flashlight with batteries
– Specific items according to needs, such as products for babies, elderly adults, or pets
What to do after an earthquake?
Check if there are injured people, turn off gas and electricity leaks, avoid using the elevator, and stay away from damaged structures. If you are in a coastal area, check if there is a tsunami alert.
Why does the Earth shake?
Because tectonic plates move and accumulate energy. When this energy is released suddenly, an earthquake occurs.
How to prepare before an earthquake?
Conduct drills, have your emergency backpack ready, and plan an evacuation route with your family. Prevention saves lives.
How is a tremor different from an earthquake?
Both are movements of the Earth, but we usually call “earthquake” those of greater magnitude and destructive impact, while “tremor” is used for milder seismic events.
Why are several magnitudes reported for the same earthquake?
Because the first information comes from nearby stations and is adjusted as more data arrives from different sensors. Science continues calculating after the first alert.
How do we know an earthquake is going to happen?
Earthquakes cannot be predicted, but seismographs and accelerographs detect ground movements in real time to alert us as quickly as possible.
What to do if I am on the street when an earthquake starts?
Look for an open place away from poles, trees, or buildings. Beware of electrical wires. If you are driving, stop cautiously in a safe place.
- HOW TO ACT DURING AN EARTHQUAKE?
- • Go to the already established safety zones.
- • Stay away from glass or objects that could fall.
- • If possible, avoid panic and try to stay calm.
- • Do not run in vehicle passage areas.
- • If you are driving, stop your vehicle.
- • If you are in a building, do not use the elevator, always use the stairs.
- • Be attentive to minors, disabled people, and the elderly.
- EARTHQUAKE OF MAGNITUDE 4.3 LOC. 155 KM SOUTHWEST OF CD HIDALGO, CHIS.
EARTHQUAKE Magnitude 4.3 Loc 155 km SOUTHWEST of CD HIDALGO, CHIS 07/08/26 14:47:16 Lat 14.14 Lon -93.48 Pf 10 km pic.twitter.com/iINnvB7hCx
— National Seismological Service (@SismologicoMX) August 7, 2026
- EARTHQUAKE OF MAGNITUDE 4.3 LOC. 142 KM SOUTHWEST OF CD HIDALGO, CHIS.
EARTHQUAKE Magnitude 4.3 Loc 142 km SOUTHWEST of CD HIDALGO, CHIS 07/08/26 14:32:57 Lat 14.03 Lon -93.28 Pf 10 km pic.twitter.com/atgzIvTdDf
— National Seismological Service (@SismologicoMX) August 7, 2026
- HOW IS A TREMOR DIFFERENT FROM AN EARTHQUAKE?
- The terms “tremor” and “earthquake” are often used interchangeably, but generally, the difference lies in their magnitude, perceived intensity, and reach.
- • Tremor: Refers to seismic movements of lesser intensity. Usually, it is used to describe low magnitude earth tremors that do not cause significant damage to structures or people. They are perceptible, but their impact is mild.
- • Earthquake: Refers to a seismic event of greater magnitude. Earthquakes are significant seismic tremors that can cause severe damage to buildings, infrastructure, and, in the most severe cases, cause personal injuries and even loss of life. They have considerable magnitude and are often accompanied by aftershocks.
- WHAT IS THE PACIFIC RING OF FIRE?
- The Pacific Ring of Fire is a geologically active region that surrounds the Pacific Ocean and the continents that border its waters. It is characterized by a high frequency of earthquakes and volcanic activity. It extends approximately 40,000 kilometers, including subduction zones where tectonic plates collide (such as the Nazca plate), generating frequent volcanoes and earthquakes.
- WHAT IS AN EARTHQUAKE?
- An earthquake is a sudden rupture of rocks inside the Earth. This sudden release of energy propagates in the form of waves that cause ground movement.
- WHY SHOULD YOU NEVER USE AN ELEVATOR DURING AN EARTHQUAKE?
- Experts recommend never using the elevator during an earthquake or tremor, as it could detach from its structure and fall from a great height with people inside.
- WHAT TO DO IN CASE OF A TSUNAMI?
- If you receive official tsunami alert or alarm information or see the sea receding, evacuate to higher areas. Move to a flood-free zone and head to the nearest meeting point. If you cannot reach a high area, go to an upper floor or the roof of a solid building.
- EARTHQUAKE OF MAGNITUDE 4.3 LOC. 161 KM SOUTHWEST OF MAPASTEPEC, CHIS.
EARTHQUAKE Magnitude 4.3 Loc 161 km SOUTHWEST of MAPASTEPEC, CHIS 07/08/26 14:10:11 Lat 14.18 Lon -93.64 Pf 10 km pic.twitter.com/oOF3s0SlVz
— National Seismological Service (@SismologicoMX) August 7, 2026
- WHAT SHOULD MY EMERGENCY BACKPACK CONTAIN?
- • Essential hygiene items
- • First aid kit (bandages, gauze, alcohol, pills, hydrogen peroxide, etc.)
- • Warm clothing
- • Non-perishable food (cans of tuna, cereal bars, chocolates, nuts, etc.) and money
- • Communication items
- • Specific items for babies and infants, feminine use, the elderly, and other basic needs.
- Check here the morning report on seismic activity in Mexican territory.
Morning seismicity report 2026-08-07 including all located earthquakes of magnitude less than 4.0 updated until 05:00 hours, available at: https://t.co/MmEswi0AEk
— National Seismological Service (@SismologicoMX) August 7, 2026
- EARTHQUAKE OF MAGNITUDE 4.0 LOC. 36 KM WEST OF TECPAN, GRO.
EARTHQUAKE Magnitude 4.0 Loc 36 km WEST of TECPAN, GRO 07/08/26 05:04:01 Lat 17.15 Lon -100.96 Pf 13 km pic.twitter.com/SJwO9CbwBz
— National Seismological Service (@SismologicoMX) August 7, 2026
- WHAT IS THE LARGEST MAGNITUDE EARTHQUAKE THAT SHOOK MEXICO CITY?
- On September 19, 1985, Mexico City experienced a devastating earthquake of 8.1 magnitude, with its epicenter on the Pacific coast. It is estimated that at least 10,000 people lost their lives, affecting and toppling thousands of housing, commercial, and public service structures.
- WHAT IS THE DIFFERENCE BETWEEN THE MAGNITUDE AND INTENSITY OF AN EARTHQUAKE?
- They are scales to measure the size or impact of a tremor. The magnitude scale is obtained numerically from records obtained by seismographs and is related to the size and energy released during a tremor. The intensity scale is assigned based on the damage or effects caused to people and their constructions.
- WHY DO SO MANY EARTHQUAKES OCCUR IN MEXICO?
- In the context of Plate Tectonics, Mexico is located in the so-called Ring of Fire, where a large part of the seismic movements worldwide are recorded. The country is located on the North American Plate, bordered on its southern and western portion by the Cocos, Rivera, and Pacific plates.
- CAN ALL EARTHQUAKES GENERATE TSUNAMIS?
A Tsunami is waves several meters high produced by an earthquake whose hypocenter takes place under the ocean. These earthquakes cause the seabed to move vertically, which generates a violent displacement of the volume of water above it.
- Earthquake 36 km WEST of TECPÁN
- Date and Local Time: 2026-08-07 5:04:01
- Magnitude: 4.0
- Depth: 13.2 km
- Latitude: 17.151
- Longitude: -100.958
- Earthquake 125 km SOUTHWEST of CD HIDALGO
- Date and Local Time: 2026-08-07 4:21:06
- Magnitude: 4.0
- Depth: 11.3 km
- Latitude: 14.019
- Longitude: -93.093
- Earthquake 52 km NORTHWEST of RÍO GRANDE
- Date and Local Time: 2026-08-07 2:58:10
- Magnitude: 3.7
- Depth: 5.7 km
- Latitude: 16.462
- Longitude: -97.563
- Earthquake 106 km SOUTHWEST of HUIXTLA
- Date and Local Time: 2026-08-07 2:48:39
- Magnitude: 3.9
- Depth: 20.3 km
- Latitude: 14.405
- Longitude: -93.103
- WHAT SHOULD MY EMERGENCY BACKPACK CONTAIN?
• Essential hygiene items
• First aid kit (bandages, gauze, alcohol, pills, hydrogen peroxide, etc.)
• Warm clothing
• Non-perishable food (cans of tuna, cereal bars, chocolates, nuts, etc.) and money
• Communication items
• Specific items for babies and infants, feminine use, the elderly, and other basic needs.
- WHAT IS THE LARGEST MAGNITUDE EARTHQUAKE THAT SHOOK MEXICO CITY?
- On September 19, 1985, Mexico City experienced a devastating earthquake of 8.1 magnitude.
- It is estimated that at least 10,000 people lost their lives, affecting and toppling thousands of housing, commercial, and public service structures.
- WHAT IS AN EARTHQUAKE?
An earthquake is a sudden rupture of rocks inside the Earth. This sudden release of energy propagates in the form of waves that cause ground movement.
- HOW LONG DOES AN EARTHQUAKE LAST AND WHY DOES THE SSN NOT REPORT THIS DATA?
When we talk about the duration of an earthquake, we can refer to several different concepts: One is the duration of the movement perceived by humans, another is the duration of the instrumental record (which can be several minutes), and another is the time the fault movement that caused the earthquake lasted (which can be just a few seconds).
- WHAT IS THE DIFFERENCE BETWEEN THE MAGNITUDE AND INTENSITY OF AN EARTHQUAKE?
They are scales to measure the size or impact of a tremor. The magnitude scale is obtained numerically from records obtained by seismographs and is related to the size and energy released during a tremor. The intensity scale is assigned based on the damage or effects caused to people and their constructions.
- WHY DO SO MANY EARTHQUAKES OCCUR IN MEXICO?
In the context of Plate Tectonics, Mexico is located in the so-called Ring of Fire, where a large part of the seismic movements worldwide are recorded. The country is located on the North American Plate, bordered on its southern and western portion by the Cocos, Rivera, and Pacific plates.
- Mexico is one of the countries in the world with the highest seismic activity, as according to statistics, more than 90 earthquakes per year with a magnitude greater than 4 on the Richter scale are recorded, which is equivalent to 60% of all seismic movements recorded worldwide.
What was the magnitude and where was the last tremor in Mexico? Watch live here the reports from the National Seismological Service (SSN) about earthquakes in the country.
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