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Light earthquake: M4.2 quake has struck near San Francisco del Mar in Mexico


Earthquake location 15.8782S, -94.6393WA light earthquake magnitude 4.2 (ml/mb) has struck on Saturday, 39 kilometers (24 miles) from San Francisco del Mar in Mexico. Exact location of event, longitude -94.6393 West, latitude 15.8782 North, depth = 20.97 km. Exact time and date of event in UTC/GMT: 02/12/17 / 2017-12-02 15:05:33 / December 2, 2017 @ 3:05 pm. Unique identifier: us1000bkaw. Ids that are associated to the event: us1000bkaw. 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 20.97 km (13 miles). The 4.2-magnitude earthquake has occurred at 09:05:33 / 9:05 am (local time epicenter).

Country/countries that might be effected, Mexico (c. 112 469 000 pop). Nearest cities/city/villages to epicentrum/hypocenter was San Jerónimo Ixtepec, Arriaga, Paredón (min 5000 pop). Epicenter of the earthquake was 69 km (43 miles) from Salina Cruz (c. 73 600 pop), 74 km (46 miles) from Juchitán de Zaragoza (c. 67 600 pop), 81 km (50 miles) from Santo Domingo Tehuantepec (c. 37 400 pop), 92 km (57 miles) from San Jerónimo Ixtepec (c. 23 200 pop), 88 km (55 miles) from Arriaga (c. 22 800 pop), 69 km (43 miles) from Unión Hidalgo (c. 12 700 pop).

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. There are an estimated 13,000 light quakes in the world each year. In the past 24 hours, there have been one, in the last 10 days five, in the past 30 days seventeen and in the last 365 days three hundred and ninety-three earthquakes of magnitude 3.0 or greater that was reported 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: 39 km S of San Francisco del Mar, Mexico.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude -94.6393° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 15.8782° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 20.97 km Depth of the event in kilometers.
Place 39km S of San Francisco 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 2017-12-02 15:05:33 Time when the event occurred. UTC/GMT
Updated 2017-12-03 14:30:04 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 2.439 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.34 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 180 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 us1000bkaw Id of event.
Event Code 1000bkaw An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000bkaw, A comma-separated list of event ids that are associated to an event.

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