Light earthquake 4.1 mag, 55 km SSE of San Francisco del Mar, Mexico

A light earthquake with magnitude 4.1 (ml/mb) was reported 55 kilometers (34 miles) from San Francisco del Mar in Mexico on Saturday. The temblor was detected at 04:19:26 / 4:19 am (local time epicenter). Exact time and date of earthquake 09/09/17 / 2017-09-09 10:19:26 / September 9, 2017 @ 10:19 am UTC/GMT. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). All ids that are associated to the event: us2000ayba. Unique identifier: us2000ayba. Exact location of event, longitude -94.5053 West, latitude 15.7495 North, depth = 68.22 km. The earthquake occurred at a depth of 68.22 km (42 miles).

Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Salina Cruz, Tonalá, Unión Hidalgo. Close country/countries that might be effected, Mexico (c. 112 469 000 pop). Epicenter of the event was 89 km (55 miles) from Salina Cruz (c. 73 600 pop), 89 km (55 miles) from Tonalá (c. 32 900 pop), 84 km (52 miles) from Arriaga (c. 22 800 pop), 88 km (54 miles) from Unión Hidalgo (c. 12 700 pop), 70 km (44 miles) from Chahuite (c. 9 800 pop), 70 km (43 miles) from Las Amilpas (c. 8 800 pop).

Each year there are an estimated 13,000 light quakes 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 twenty-three, in the last 10 days two hundred and sixty-four, in the past 30 days two hundred and sixty-four and in the last 365 days two hundred and eighty-one earthquakes of magnitude 3.0 or greater that have been detected in the same area.

Did you feel the quake?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity 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: 55 km SSE of San Francisco del Mar, Mexico.

More information

Parameter	Value	Description
Magnitude	4.1 mb	The magnitude for the event.
Longitude	-94.5053° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	15.7495° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	68.22 km	Depth of the event in kilometers.
Place	55km 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 10:19:26	Time when the event occurred. UTC/GMT
Updated	2017-10-04 08:48:39	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	1.239	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.67 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	152	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	us2000ayba	Id of event.
Event Code	2000ayba	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us2000ayba,	A comma-separated list of event ids that are associated to an event.

Parameter

Value

Description

Magnitude

4.1 mb

The magnitude for the event.

Longitude

-94.5053° West

Decimal degrees longitude. Negative values for western longitudes.

Latitude

15.7495° North

Decimal degrees latitude. Negative values for southern latitudes.

Depth

68.22 km

Depth of the event in kilometers.

Place

55km 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 10:19:26

Time when the event occurred. UTC/GMT

Updated

2017-10-04 08:48:39

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

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

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

1.239

Horizontal distance from the epicenter to the nearest station (in degrees).

Root Mean Square

0.67 sec

The root-mean-square (RMS) travel time residual, in sec, using all weights.

Azimuthal Gap

152

The largest azimuthal gap between azimuthally adjacent stations (in degrees).

Magnitude Type

The method or algorithm used to calculate the preferred magnitude for the event.

Event Type

earthquake

Type of seismic event.

Event ID

us2000ayba

Id of event.

Event Code

2000ayba

An identifying code assigned by, and unique from, the corresponding source for the event.

Event IDS

,us2000ayba,

A comma-separated list of event ids that are associated to an event.

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Light earthquake 4.1 mag, 55 km SSE of San Francisco del Mar, Mexico

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