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Light World Earthquakes Magnitude 4-4.9

Light earthquake 4.4 mag, 18 km E of Matias Romero, Mexico


Earthquake location 16.8995S, -94.8619WA light earthquake magnitude 4.4 (ml/mb) strikes 18 kilometers (11 miles) from Matias Romero in Mexico on Wednesday. Event id: us1000gekm. Ids that are associated to the earthquake: us1000gekm. The earthquake occurred at a depth of 10 km (6 miles) below the earth’s surface. Exact location, longitude -94.8619° West, latitude 16.8995° North, depth = 10 km. The temblor was reported at 00:17:41 / 12:17 am (local time epicenter). Date and time of earthquake in UTC/GMT: 15/08/18 / 2018-08-15 06:17:41 / August 15, 2018 @ 6:17 am. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

Epicenter of the event was 87 km (54 miles) from Salina Cruz (c. 73 600 pop), 54 km (34 miles) from Juchitán de Zaragoza (c. 67 600 pop), 76 km (47 miles) from Santo Domingo Tehuantepec (c. 37 400 pop), 44 km (27 miles) from San Jerónimo Ixtepec (c. 23 200 pop), 19 km (12 miles) from Matías Romero (c. 21 100 pop), 48 km (30 miles) from Unión Hidalgo (c. 12 700 pop). Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was San Pedro Tapanatepec, Salina Cruz, Jalapa. Nearby country/countries that might be effected, Mexico (c. 112 469 000 pop).

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

Did you feel it?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity 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: 18 km E of Matias Romero, Mexico. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.4 mb The magnitude for the event.
Longitude -94.8619° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 16.8995° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 18km E of Matias Romero, Mexico Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-08-15 06:17:41 Time when the event occurred. UTC/GMT
Updated 2018-09-13 16:06:06 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 298 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 1.642 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.44 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 100 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 us1000gekm Id of event.
Event Code 1000gekm An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000gekm, A comma-separated list of event ids that are associated to an event.

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