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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.1 mag strikes near Cuajinicuilapa in Mexico

Earthquake location 16.4821S, -98.3882WA light earthquake magnitude 4.1 (ml/mb) strikes 2 kilometers (1 miles) from Cuajinicuilapa in Mexico on Saturday. The temblor was detected at 20:16:36 / 8:16 pm (local time epicenter). Exact location of event, depth 26.56 km, -98.3882° West, 16.4821° North. Global date and time of event UTC/GMT: 16/01/21 / 2021-01-16 20:16:36 / January 16, 2021 @ 8:16 pm. Id of earthquake: us6000dexj. Event ids that are associated: us6000dexj. The epicenter was at a depth of 26.56 km (17 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

Event epicenter was 90 km (56 miles) from Malinaltepec (c. 26 600 pop), 39 km (24 miles) from Santiago Pinotepa Nacional (c. 25 700 pop), 23 km (14 miles) from Ometepec (c. 17 800 pop), 64 km (40 miles) from Santiago Jamiltepec (c. 9 900 pop), 83 km (51 miles) from Cruz Grande (c. 9 900 pop), 78 km (48 miles) from Putla Villa de Guerrero (c. 9 500 pop). Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Malinaltepec, Cruz Grande, Putla Villa de Guerrero. Close country/countries that might be effected, Mexico (c. 112 469 000 pop).

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

Questions or comments?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home 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: 2 km ENE of Cuajinicuilapa, Mexico.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude -98.3882° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 16.4821° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 26.56 km Depth of the event in kilometers.
Place 2 km ENE of Cuajinicuilapa, Mexico Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2021-01-16 20:16:36 Time when the event occurred. UTC/GMT
Updated 2021-02-11 06:26:29 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 259 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 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.265 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.8 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 176 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 us6000dexj Id of event.
Event Code 6000dexj An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000dexj, A comma-separated list of event ids that are associated to an event.

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