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Light World Earthquakes Magnitude 4-4.9

Light earthquake: M4.3 quake has struck near San Mateo del Mar in Mexico


Earthquake location 15.5868S, -94.9459WA light earthquake magnitude 4.3 (ml/mb) has struck on Thursday, 68 kilometers (42 miles) from San Mateo del Mar in Mexico. Unique identifier: us2000hhzl. Ids that are associated to the event: us2000hhzl. The temblor was detected at 21:27:48 / 9:27 pm (local time epicenter). Global time and date of event 21/09/18 / 2018-09-21 03:27:48 / September 21, 2018 @ 3:27 am UTC/GMT. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of earthquake, -94.9459° West, 15.5868° North, depth 43.56 km. The epicenter was at a depth of 43.56 km (27 miles).

Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Santo Domingo Tehuantepec, Salina Cruz, San Mateo del Mar. Close country/countries that might be effected, Mexico (c. 112 469 000 pop). Epicenter of the event was 72 km (45 miles) from Salina Cruz (c. 73 600 pop), 88 km (55 miles) from Santo Domingo Tehuantepec (c. 37 400 pop), 69 km (43 miles) from San Mateo del Mar (c. 5 400 pop).

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

How would you describe the shaking?

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: 68 km S of San Mateo del Mar, Mexico.

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More information

Parameter Value Description
Magnitude 4.3 mb The magnitude for the event.
Longitude -94.9459° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 15.5868° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 43.56 km Depth of the event in kilometers.
Place 68km S of San Mateo del Mar, Mexico Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-09-21 03:27:48 Time when the event occurred. UTC/GMT
Updated 2018-09-28 05:19:28 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 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 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 1.496 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.17 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 161 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 us2000hhzl Id of event.
Event Code 2000hhzl An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000hhzl, A comma-separated list of event ids that are associated to an event.

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