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Light World Earthquakes Magnitude 4-4.9

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



Earthquake location 15.8133S, -94.4304WA light earthquake with magnitude 4.2 (ml/mb) was detected on Saturday, 52 kilometers (32 miles) from San Francisco del Mar in Mexico. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of earthquake, longitude -94.4304 West, latitude 15.8133 North, depth = 42.26 km. Global date and time of event UTC/GMT: 09/09/17 / 2017-09-09 06:19:16 / September 9, 2017 @ 6:19 am. Id of earthquake: us2000arsu. Event ids that are associated: us2000arsu. The epicenter of the earthquake was roughly 42.26 km (26 miles) below the earth’s surface. The temblor was reported at 00:19:16 / 12:19 am (local time epicenter).

Nearby country/countries that might be effected, Mexico (c. 112 469 000 pop). Nearest cities/city/villages to epicentrum/hypocenter was Salina Cruz, Unión Hidalgo, Tonalá (min 5000 pop). Epicenter of the event was 92 km (57 miles) from Salina Cruz (c. 73 600 pop), 78 km (49 miles) from Tonalá (c. 32 900 pop), 74 km (46 miles) from Arriaga (c. 22 800 pop), 85 km (53 miles) from Unión Hidalgo (c. 12 700 pop), 60 km (37 miles) from Chahuite (c. 9 800 pop), 65 km (40 miles) from Las Amilpas (c. 8 800 pop).

Every year there are an estimated 13,000 light earthquakes in the world. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. In the past 24 hours, there have been two hundred and ten, in the last 10 days two hundred and twenty-nine, in the past 30 days two hundred and twenty-nine and in the last 365 days two hundred and fourty-six earthquakes of magnitude 3.0 or greater that have been detected in the same area.

Did you feel it?

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. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 52 km SSE of San Francisco del Mar, 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 -94.4304° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 15.8133° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 42.26 km Depth of the event in kilometers.
Place 52km SSE 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 2017-09-09 06:19:16 Time when the event occurred. UTC/GMT
Updated 2017-09-28 05:42:30 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 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 2.864 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.83 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 209 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 us2000arsu Id of event.
Event Code 2000arsu An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000arsu, A comma-separated list of event ids that are associated to an event.

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