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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.1 mag has occurred near Comitancillo in Mexico

Earthquake location 16.3979S, -95.1547WA light earthquake with magnitude 4.1 (ml/mb) was detected on Thursday, 9 kilometers (6 miles) from Comitancillo in Mexico. Exact location, longitude -95.1547° West, latitude 16.3979° North, depth = 45.09 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact time and date of earthquake 13/10/17 / 2017-10-13 03:29:27 / October 13, 2017 @ 3:29 am UTC/GMT. Event id: us1000ar8f. Ids that are associated to the earthquake: us1000ar8f. The earthquake was roughly at a depth of 45.09 km (28 miles). The temblor was picked up at 21:29:27 / 9:29 pm (local time epicenter).

Closest city/cities/towns to epicentrum/hypocenter was Santo Domingo Zanatepec, San Francisco Ixhuatan, Las Amilpas (min 5000 pop). The epicenter was 24 km (15 miles) from Salina Cruz (c. 73 600 pop), 15 km (9 miles) from Juchitán de Zaragoza (c. 67 600 pop), 12 km (8 miles) from Santo Domingo Tehuantepec (c. 37 400 pop), 21 km (13 miles) from San Jerónimo Ixtepec (c. 23 200 pop), 55 km (34 miles) from Matías Romero (c. 21 100 pop), 36 km (22 miles) from Unión Hidalgo (c. 12 700 pop). Close country/countries that might be effected, Mexico (c. 112 469 000 pop).

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. In the past 24 hours, there have been twelve, in the last 10 days twenty-three, in the past 30 days eighty-eight and in the last 365 days one hundred and seventy-six earthquakes of magnitude 3.0 or greater that have been detected in the same area. There are an estimated 13,000 light quakes in the world each year.

Questions or comments?

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. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 9 km S of Comitancillo, Mexico.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude -95.1547° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 16.3979° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 45.09 km Depth of the event in kilometers.
Place 9km S of Comitancillo, Mexico Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-10-13 03:29:27 Time when the event occurred. UTC/GMT
Updated 2017-11-03 23:41:30 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 259 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 1.11 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.02 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 116 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 us1000ar8f Id of event.
Event Code 1000ar8f An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000ar8f, A comma-separated list of event ids that are associated to an event.

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