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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.2 mag strikes near San Juan Guichicovi in Mexico

Earthquake location 16.9487S, -95.1367WA light earthquake magnitude 4.2 (ml/mb) has occurred on Wednesday, 4 kilometers (2 miles) from San Juan Guichicovi in Mexico. The earthquake was roughly at a depth of 116.52 km (72 miles). Exact location of event, longitude -95.1367 West, latitude 16.9487 North, depth = 116.52 km. Event ids that are associated to the earthquake: us10007qt8. Id of event: us10007qt8. The 4.2-magnitude earthquake has occurred at 18:36:20 / 6:36 pm (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Global date and time of event UTC/GMT: 22/12/16 / 2016-12-22 00:36:20 / December 22, 2016 @ 12:36 am.

Nearest cities/city/towns to hypocenter/epicentrum was Salina Cruz, Las Amilpas, San Mateo del Mar (min 5000 pop). Country/countries that might be effected, Mexico (c. 112 469 000 pop). Earthquake epicenter was 85 km (53 miles) from Salina Cruz (c. 73 600 pop), 58 km (36 miles) from Juchitán de Zaragoza (c. 67 600 pop), 70 km (44 miles) from Santo Domingo Tehuantepec (c. 37 400 pop), 41 km (26 miles) from San Jerónimo Ixtepec (c. 23 200 pop), 13 km (8 miles) from Matías Romero (c. 21 100 pop), 62 km (39 miles) from Unión Hidalgo (c. 12 700 pop).

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

Questions or comments?

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. This data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 4 km WSW of San Juan Guichicovi, Mexico.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude -95.1367° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 16.9487° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 116.52 km Depth of the event in kilometers.
Place 4km WSW of San Juan Guichicovi, Mexico Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2016-12-22 00:36:20 Time when the event occurred. UTC/GMT
Updated 2017-01-20 03:18:41 Time when the event was most recently updated. UTC/GMT
Timezone offset -360 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 0.28 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.98 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 95 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 us10007qt8 Id of event.
Event Code 10007qt8 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us10007qt8, A comma-separated list of event ids that are associated to an event.

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