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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4 mag has occurred near Tejar in Costa Rica

Earthquake location 9.7102S, -84.158WA light earthquake magnitude 4 (ml/mb) strikes 9 kilometers (6 miles) from Tejar in Costa Rica on Friday. Exact location of event, depth 12.17 km, -84.158° West, 9.7102° North. Id of earthquake: us2000ggxz. Event ids that are associated: us2000ggxz. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The 4-magnitude earthquake was detected at 11:50:45 / 11:50 am (local time epicenter). The earthquake occurred at a depth of 12.17 km (8 miles) below the earth’s surface. Global date and time of event UTC/GMT: 27/07/18 / 2018-07-27 17:50:45 / July 27, 2018 @ 5:50 pm.

Nearest cities/city/towns to hypocenter/epicentrum was Siquirres, Mercedes, Puntarenas (min 5000 pop). Nearby country/countries, Costa Rica (c. 4 516 000 pop) (That might be effected). Event epicenter was 26 km (16 miles) from San José (c. 335 000 pop), 32 km (20 miles) from San Francisco (c. 55 900 pop), 35 km (21 miles) from Alajuela (c. 47 500 pop), 35 km (22 miles) from Paraíso (c. 39 700 pop), 80 km (50 miles) from Puntarenas (c. 35 700 pop), 62 km (39 miles) from San Isidro (c. 34 900 pop).

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. Each year there are an estimated 13,000 light quakes in the world. In the past 24 hours, there have been two, in the last 10 days three, in the past 30 days three and in the last 365 days thirty earthquakes of magnitude 3.0 or greater that has struck near.

How would you describe the shaking?

Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. 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: 9 km ESE of Tejar, Costa Rica.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude -84.158° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 9.7102° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 12.17 km Depth of the event in kilometers.
Place 9km ESE of Tejar, Costa Rica Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-07-27 17:50:45 Time when the event occurred. UTC/GMT
Updated 2018-07-29 23:23:18 Time when the event was most recently updated. UTC/GMT
Timezone offset -360 Timezone offset from UTC in minutes at the event epicenter.
Felt 13 The total number of felt reports
CDI 4.1 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 251 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 0.153 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.49 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 167 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 us2000ggxz Id of event.
Event Code 2000ggxz An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000ggxz, A comma-separated list of event ids that are associated to an event.

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