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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.1 mag has occurred near San Francisco del Mar in Mexico

Posted by admin on October 6, 2017 0 Comments

Earthquake location 15.8428S, -94.4429WA light earthquake with magnitude 4.1 (ml/mb) was reported 48 kilometers (30 miles) from San Francisco del Mar in Mexico on Friday. Exact time and date of event in UTC/GMT: 09/09/17 / 2017-09-09 05:48:42 / September 9, 2017 @ 5:48 am. The earthquake occurred at a depth of 39.5 km (25 miles). Event id: us2000aya4. Ids that are associated to the earthquake: us2000aya4. The 4.1-magnitude earthquake was detected at 23:48:42 / 11:48 pm (local time epicenter). Exact location of earthquake, longitude -94.4429 West, latitude 15.8428 North, depth = 39.5 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

Nearest cities/city/towns to hypocenter/epicentrum was Juchitán de Zaragoza, Salina Cruz, Unión Hidalgo (min 5000 pop). The epicenter was 90 km (56 miles) from Salina Cruz (c. 73 600 pop), 90 km (56 miles) from Juchitán de Zaragoza (c. 67 600 pop), 78 km (49 miles) from Tonalá (c. 32 900 pop), 73 km (45 miles) from Arriaga (c. 22 800 pop), 81 km (50 miles) from Unión Hidalgo (c. 12 700 pop), 58 km (36 miles) from Chahuite (c. 9 800 pop). Close country/countries that might be effected, Mexico (c. 112 469 000 pop).

There are an estimated 13,000 light quakes in the world each year. 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 eighty-three, in the last 10 days two hundred and ninety-six, in the past 30 days two hundred and ninety-six and in the last 365 days three hundred and fourteen earthquakes of magnitude 3.0 or greater that was reported nearby.

Did you feel it?

How did you react? Was there any damage to buildings? Leave a comment or report about shaking, activity 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: 48 km SSE of San Francisco del Mar, Mexico.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude -94.4429° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 15.8428° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 39.5 km Depth of the event in kilometers.
Place 48km 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 05:48:42 Time when the event occurred. UTC/GMT
Updated 2017-10-06 12:47:27 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 1.186 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.76 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 us2000aya4 Id of event.
Event Code 2000aya4 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000aya4, A comma-separated list of event ids that are associated to an event.

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