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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4 mag has occurred near Santa María Chimalapa in Mexico

Posted by admin on September 8, 2025 0 Comments

Earthquake location 16.9934S, -94.7086WA light earthquake with magnitude 4 (ml/mb) was detected on Wednesday, 9 kilometers (6 miles) from Santa María Chimalapa in Mexico. Exact time and date of earthquake 20/08/25 / 2025-08-20 17:01:48 / August 20, 2025 @ 5:01 pm UTC/GMT. The earthquake was roughly at a depth of 114.995 km (71 miles). Unique identifier: us7000qura. Ids that are associated to the event: us7000qura. Exact location of event, depth 114.995 km, -94.7086° West, 16.9934° North. The temblor was picked up at 17:01:48 / 5:01 pm (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

Event epicenter was 70 km (44 miles) from Juchitán de Zaragoza (c. 67 600 pop), 62 km (39 miles) from San Jerónimo Ixtepec (c. 23 200 pop), 37 km (23 miles) from Matías Romero (c. 21 100 pop), 59 km (37 miles) from Unión Hidalgo (c. 12 700 pop), 70 km (44 miles) from Las Amilpas (c. 8 800 pop), 38 km (24 miles) from Colonia Rincón Viejo (c. 8 500 pop). Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was San Pedro Tapanatepec, San Francisco Ixhuatan, Las Amilpas. Country/countries that might be effected, Mexico (c. 112 469 000 pop).

There are an estimated 13,000 light earthquakes in the world each year. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. 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 twenty-one earthquakes of magnitude 3.0 or greater that has struck near.

Questions or comments?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 9 km NNW of Santa María Chimalapa, Mexico.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude -94.7086° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 16.9934° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 114.995 km Depth of the event in kilometers.
Place 9 km NNW of Santa María Chimalapa, Mexico Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2025-08-20 17:01:48 Time when the event occurred. UTC/GMT
Updated 2025-09-08 15:59:45 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 246 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 31 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.628 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.81 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 99 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 us7000qura Id of event.
Event Code 7000qura An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us7000qura, A comma-separated list of event ids that are associated to an event.

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