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Light earthquake: M4.2 quake has struck near Las Amilpas in Mexico


Earthquake location 16.2955S, -94.5667WA light earthquake magnitude 4.2 (ml/mb) has struck on Monday, 9 kilometers (6 miles) from Las Amilpas in Mexico. The temblor was picked up at 22:12:30 / 10:12 pm (local time epicenter). Exact time and date of event in UTC/GMT: 31/07/18 / 2018-07-31 04:12:30 / July 31, 2018 @ 4:12 am. Event ids that are associated to the earthquake: us2000ghw0. Id of event: us2000ghw0. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The epicenter was at a depth of 119.81 km (74 miles). Exact location, longitude -94.5667° West, latitude 16.2955° North, depth = 119.81 km.

Earthquake epicenter was 69 km (43 miles) from Salina Cruz (c. 73 600 pop), 51 km (32 miles) from Juchitán de Zaragoza (c. 67 600 pop), 72 km (45 miles) from Santo Domingo Tehuantepec (c. 37 400 pop), 90 km (56 miles) from Tonalá (c. 32 900 pop), 65 km (41 miles) from San Jerónimo Ixtepec (c. 23 200 pop), 71 km (44 miles) from Arriaga (c. 22 800 pop). Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Tonalá, Colonia Rincón Viejo, Matías Romero. Close country/countries, Mexico (c. 112 469 000 pop) (That might be effected).

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 three hundred and seventeen earthquakes of magnitude 3.0 or greater that was reported nearby. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

Did you feel it?

Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 9 km SE of Las Amilpas, 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 -94.5667° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 16.2955° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 119.81 km Depth of the event in kilometers.
Place 9km SE of Las Amilpas, Mexico Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-07-31 04:12:30 Time when the event occurred. UTC/GMT
Updated 2018-07-31 04:21:14 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 2.333 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.84 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 198 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 us2000ghw0 Id of event.
Event Code 2000ghw0 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000ghw0, A comma-separated list of event ids that are associated to an event.

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