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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.2 mag has occurred near Las Amilpas in Mexico

Earthquake location 16.4589S, -94.624WA light earthquake with magnitude 4.2 (ml/mb) was reported 10 kilometers (6 miles) from Las Amilpas in Mexico on Tuesday. The 4.2-magnitude earthquake was detected at 07:18:36 / 7:18 am (local time epicenter). Event ids that are associated to the earthquake: us1000ch6d. Id of event: us1000ch6d. 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 90.74 km (56 miles). Exact location of event, depth 90.74 km, -94.624° West, 16.4589° North. Global date and time of event UTC/GMT: 30/01/18 / 2018-01-30 13:18:36 / January 30, 2018 @ 1:18 pm.

Epicenter of the earthquake was 69 km (43 miles) from Salina Cruz (c. 73 600 pop), 42 km (26 miles) from Juchitán de Zaragoza (c. 67 600 pop), 67 km (42 miles) from Santo Domingo Tehuantepec (c. 37 400 pop), 53 km (33 miles) from San Jerónimo Ixtepec (c. 23 200 pop), 81 km (50 miles) from Arriaga (c. 22 800 pop), 64 km (40 miles) from Matías Romero (c. 21 100 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Paredón, Jalapa, Arriaga. Close country/countries that might be effected, Mexico (c. 112 469 000 pop).

Each year there are an estimated 13,000 light quakes in the world. In the past 24 hours, there have been two, in the last 10 days five, in the past 30 days ten and in the last 365 days two hundred and thirty-seven 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.

Did you feel it?

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. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 10 km N of Las Amilpas, Mexico. This information 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 -94.624° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 16.4589° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 90.74 km Depth of the event in kilometers.
Place 10km N 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 2018-01-30 13:18:36 Time when the event occurred. UTC/GMT
Updated 2018-02-13 18:28:33 Time when the event was most recently updated. UTC/GMT
Timezone offset -360 Timezone offset from UTC in minutes at the event epicenter.
Felt 1 The total number of felt reports
CDI 2.2 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 272 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 0.676 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.92 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 121 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 us1000ch6d Id of event.
Event Code 1000ch6d An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000ch6d, A comma-separated list of event ids that are associated to an event.

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