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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.5 mag strikes near Santiago Pinotepa Nacional in Mexico

Earthquake location 16.3775S, -98.1132WA light earthquake magnitude 4.5 (ml/mb) strikes 12 kilometers (7 miles) from Santiago Pinotepa Nacional in Mexico on Wednesday. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Event ids that are associated to the earthquake: us1000da3d. Id of event: us1000da3d. Exact location of event, depth 22.85 km, -98.1132° West, 16.3775° North. The 4.5-magnitude earthquake was detected at 14:48:52 / 2:48 pm (local time epicenter). Exact time and date of event in UTC/GMT: 21/03/18 / 2018-03-21 20:48:52 / March 21, 2018 @ 8:48 pm. The earthquake occurred at a depth of 22.85 km (14 miles) below the earth’s surface.

Epicenter of the earthquake was 8 km (5 miles) from Santiago Pinotepa Nacional (c. 25 700 pop), 47 km (29 miles) from Ometepec (c. 17 800 pop), 33 km (20 miles) from Santiago Jamiltepec (c. 9 900 pop), 75 km (46 miles) from Putla Villa de Guerrero (c. 9 500 pop), 34 km (21 miles) from Cuajinicuilapa de Santa Maria (c. 9 400 pop), 82 km (51 miles) from San Luis Acatlán (c. 8 300 pop), 96 km (59 miles) from Copala (c. 6 900 pop). Nearest cities/city/villages to epicentrum/hypocenter was Copala, Santa Catarina Juquila, San Luis Acatlán (min 5000 pop). Country/countries that might be effected, Mexico (c. 112 469 000 pop).

In the past 24 hours, there have been two, in the last 10 days six, in the past 30 days twelve and in the last 365 days fourty-six earthquakes of magnitude 3.0 or greater that have been detected nearby. 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.

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. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 12 km WNW of Santiago Pinotepa Nacional, Mexico. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.5 mb The magnitude for the event.
Longitude -98.1132° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 16.3775° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 22.85 km Depth of the event in kilometers.
Place 12km WNW of Santiago Pinotepa Nacional, Mexico Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-03-21 20:48:52 Time when the event occurred. UTC/GMT
Updated 2018-04-17 14:07:28 Time when the event was most recently updated. UTC/GMT
Timezone offset -360 Timezone offset from UTC in minutes at the event epicenter.
Felt 1 The total number of felt reports
CDI 1 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 312 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 0.019 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.46 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 157 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 us1000da3d Id of event.
Event Code 1000da3d An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000da3d, A comma-separated list of event ids that are associated to an event.

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