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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4 mag strikes near Tres Picos in Mexico

Earthquake location 15.8179S, -93.4352WA light earthquake with magnitude 4 (ml/mb) was reported 11 kilometers (7 miles) from Tres Picos in Mexico on Friday. The 4-magnitude earthquake was detected at 07:28:35 / 7:28 am (local time epicenter). Exact location of earthquake, longitude -93.4352 West, latitude 15.8179 North, depth = 70.52 km. All ids that are associated to the event: us1000auk6. Unique identifier: us1000auk6. Exact time and date of event in UTC/GMT: 20/10/17 / 2017-10-20 13:28:35 / October 20, 2017 @ 1:28 pm. The earthquake was roughly at a depth of 70.52 km (44 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

Epicenter of the earthquake was 46 km (28 miles) from Tonalá (c. 32 900 pop), 68 km (42 miles) from Arriaga (c. 22 800 pop), 71 km (44 miles) from Mapastepec (c. 16 100 pop), 28 km (18 miles) from Pijijiapan (c. 15 100 pop), 45 km (28 miles) from Villa Corzo (c. 9 100 pop), 76 km (47 miles) from Angel Albino Corzo (c. 8 900 pop). Nearby country/countries, Mexico (c. 112 469 000 pop) (That might be effected). Closest city/cities/towns to epicentrum/hypocenter was Angel Albino Corzo, Nueva Palestina, Mapastepec (min 5000 pop).

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. Every year there are an estimated 13,000 light earthquakes in the world. In the past 24 hours, there have been three, in the last 10 days nine, in the past 30 days thirty-four and in the last 365 days one hundred and ninety-six earthquakes of magnitude 3.0 or greater that has occurred nearby.

How would you describe the shaking?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city 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: 11 km ESE of Tres Picos, Mexico.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude -93.4352° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 15.8179° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 70.52 km Depth of the event in kilometers.
Place 11km ESE of Tres Picos, Mexico Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-10-20 13:28:35 Time when the event occurred. UTC/GMT
Updated 2017-10-27 07:55:37 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 246 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 1.927 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.64 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 197 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 us1000auk6 Id of event.
Event Code 1000auk6 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000auk6, A comma-separated list of event ids that are associated to an event.

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