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Light World Earthquakes Magnitude 4-4.9

Light earthquake 4.2 mag, 44 km NE of Coyuquilla Norte, Mexico


Earthquake location 17.7003S, -100.8015WA light earthquake magnitude 4.2 (ml/mb) has occurred on Monday, 44 kilometers (27 miles) from Coyuquilla Norte in Mexico. Id of earthquake: us7000d3pw. Event ids that are associated: us7000d3pw. Exact location of event, depth 50.95 km, -100.8015° West, 17.7003° North. The 4.2-magnitude earthquake has occurred at 20:58:48 / 8:58 pm (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The earthquake occurred at a depth of 50.95 km (32 miles) below the earth’s surface. Date and time of earthquake in UTC/GMT: 18/01/21 / 2021-01-18 20:58:48 / January 18, 2021 @ 8:58 pm.

Country/countries that might be effected, Mexico (c. 112 469 000 pop). The epicenter was 80 km (50 miles) from Ixtapa-Zihuatanejo (c. 61 300 pop), 74 km (46 miles) from Ciudad Altamirano (c. 24 500 pop), 67 km (42 miles) from Atoyac de Álvarez (c. 21 400 pop), 53 km (33 miles) from Petatlán (c. 21 000 pop), 88 km (55 miles) from Arcelia (c. 16 900 pop), 56 km (35 miles) from Tecpan de Galeana (c. 14 600 pop). Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Ixtapa, Cutzamala de Pinzón, Arcelia.

There are an estimated 13,000 light quakes in the world each year. 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.

Questions or comments?

How did you react? Was there any damage to buildings? Leave a comment or report about shaking, activity and damage at your home, city and country. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 44 km NE of Coyuquilla Norte, Mexico. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude -100.8015° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 17.7003° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 50.95 km Depth of the event in kilometers.
Place 44 km NE of Coyuquilla Norte, Mexico Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2021-01-18 20:58:48 Time when the event occurred. UTC/GMT
Updated 2021-01-27 19:25:58 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 271 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 1.977 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.64 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 119 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 us7000d3pw Id of event.
Event Code 7000d3pw An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us7000d3pw, A comma-separated list of event ids that are associated to an event.

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