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Light earthquake, 4.2 mag has occurred near Quepos in Costa Rica

Earthquake location 9.4557S, -84.0864WA light earthquake with magnitude 4.2 (ml/mb) was reported 9 kilometers (6 miles) from Quepos in Costa Rica on Thursday. The 4.2-magnitude earthquake has occurred at 11:51:06 / 11:51 am (local time epicenter). Exact location of earthquake, -84.0864° West, 9.4557° North, depth 36.71 km. Unique identifier: us10003jjz. Ids that are associated to the event: us10003jjz. Exact time and date of event in UTC/GMT: 01/10/15 / 2015-10-01 17:51:06 / October 1, 2015 @ 5:51 pm. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The epicenter of the earthquake was roughly 36.71 km (23 miles) below the earth’s surface.

Close country/countries, Costa Rica (c. 4 516 000 pop) (That might be effected). Event epicenter was 53 km (33 miles) from San José (c. 335 000 pop), 60 km (37 miles) from San Francisco (c. 55 900 pop), 64 km (40 miles) from Alajuela (c. 47 500 pop), 49 km (30 miles) from Paraíso (c. 39 700 pop), 43 km (27 miles) from San Isidro (c. 34 900 pop), 51 km (32 miles) from Curridabat (c. 34 600 pop). Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Guápiles, Río Segundo, Buenos Aires.

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 one, in the last 10 days one, in the past 30 days one and in the last 365 days twelve 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. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 9 km ENE of Quepos, Costa Rica. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude -84.0864° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 9.4557° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 36.71 km Depth of the event in kilometers.
Place 9km ENE of Quepos, 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 2015-10-01 17:51:06 Time when the event occurred. UTC/GMT
Updated 2015-10-01 20:40:27 Time when the event was most recently updated. UTC/GMT
Timezone offset -360 Timezone offset from UTC in minutes at the event epicenter.
Felt 22 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 280 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 0.379 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.88 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 135 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 us10003jjz Id of event.
Event Code 10003jjz An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us10003jjz, A comma-separated list of event ids that are associated to an event.

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