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Light earthquake: M4.3 quake has struck near Teojomulco in Mexico

Posted by admin on August 21, 2025 0 Comments

Earthquake location 16.5311S, -97.2916WA light earthquake magnitude 4.3 (ml/mb) has struck on Thursday, 9 kilometers (6 miles) from Teojomulco in Mexico. The temblor was detected at 06:35:30 / 6:35 am (local time epicenter). Unique identifier: us6000r2qp. Ids that are associated to the event: us6000r2qp. Exact location of earthquake, -97.2916° West, 16.5311° North, depth 38.578 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Global time and date of event 21/08/25 / 2025-08-21 06:35:30 / August 21, 2025 @ 6:35 am UTC/GMT. The earthquake occurred at a depth of 38.578 km (24 miles).

Country/countries that might be effected, Mexico (c. 112 469 000 pop). Closest city/cities/towns to epicentrum/hypocenter was Heroica Ciudad de Tlaxiaco, Heroica Ciudad de Tlaxiaco, Villa de Etla (min 5000 pop). Epicenter of the earthquake was 85 km (53 miles) from Oaxaca de Juárez (c. 262 600 pop), 81 km (50 miles) from Santa Cruz Xoxocotlán (c. 61 800 pop), 84 km (52 miles) from Santiago Pinotepa Nacional (c. 25 700 pop), 84 km (52 miles) from San Antonio de la Cal (c. 20 200 pop), 77 km (48 miles) from Puerto Escondido (c. 19 500 pop), 77 km (48 miles) from Miahuatlán de Porfirio Díaz (c. 17 600 pop).

In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days one and in the last 365 days nine earthquakes of magnitude 3.0 or greater that have been detected nearby. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. There are an estimated 13,000 light earthquakes in the world each year.

Did you feel it?

How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking and damage at your home, city and country. The information in this article comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, detected near: 9 km SW of Teojomulco, Mexico.

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More information

Parameter Value Description
Magnitude 4.3 mb The magnitude for the event.
Longitude -97.2916° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 16.5311° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 38.578 km Depth of the event in kilometers.
Place 9 km SW of Teojomulco, Mexico Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2025-08-21 06:35:30 Time when the event occurred. UTC/GMT
Updated 2025-08-21 08:55:00 Time when the event was most recently updated. UTC/GMT
Timezone offset Timezone offset from UTC in minutes at the event epicenter.
Felt The total number of felt reports
CDI The maximum reported intensity for the event.
MMI The maximum estimated instrumental intensity for the event.
Alert Level The alert level from the PAGER earthquake impact scale. Green, Yellow, Orange or Red.
Review Status reviewed Indicates whether the event has been reviewed by a human.
Tsunami 0 This flag is set to "1" for large events in oceanic regions and "0" otherwise. The existence or value of this flag does not indicate if a tsunami actually did or will exist.
SIG 284 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network us The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,us, A comma-separated list of network contributors.
Number of Stations Used 18 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 1.594 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.76 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 177 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mb The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us6000r2qp Id of event.
Event Code 6000r2qp An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000r2qp, A comma-separated list of event ids that are associated to an event.

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