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Light earthquake: M4.6 quake has struck near Jaco in Costa Rica

Earthquake location 9.6203S, -84.7913WA light earthquake magnitude 4.6 (ml/mb) strikes 17 kilometers (11 miles) from Jaco in Costa Rica on Saturday. The epicenter was at a depth of 23.1 km (14 miles). Global time and date of event 02/09/17 / 2017-09-02 10:38:17 / September 2, 2017 @ 10:38 am UTC/GMT. Exact location of event, longitude -84.7913 West, latitude 9.6203 North, depth = 23.1 km. The temblor was detected at 04:38:17 / 4:38 am (local time epicenter). 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: us2000ae42. Id of event: us2000ae42.

Close country/countries that might be effected, Costa Rica (c. 4 516 000 pop). Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Cañas, Tilarán, Tres Ríos. Earthquake epicenter was 85 km (53 miles) from San José (c. 335 000 pop), 84 km (52 miles) from San Francisco (c. 55 900 pop), 77 km (48 miles) from Alajuela (c. 47 500 pop), 40 km (25 miles) from Puntarenas (c. 35 700 pop), 89 km (55 miles) from Curridabat (c. 34 600 pop), 90 km (56 miles) from San Vicente de Moravia (c. 34 400 pop), 90 km (56 miles) from San Vicente (c. 34 400 pop).

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 two, in the past 30 days two and in the last 365 days seven earthquakes of magnitude 3.0 or greater that have been detected in the same area. Each year there are an estimated 13,000 light earthquakes in the world.

Questions or comments?

How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking and damage 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: 17 km W of Jaco, Costa Rica.

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More information

Parameter Value Description
Magnitude 4.6 mb The magnitude for the event.
Longitude -84.7913° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 9.6203° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 23.1 km Depth of the event in kilometers.
Place 17km W of Jaco, 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 2017-09-02 10:38:17 Time when the event occurred. UTC/GMT
Updated 2017-09-02 11:09:53 Time when the event was most recently updated. UTC/GMT
Timezone offset -360 Timezone offset from UTC in minutes at the event epicenter.
Felt 4 The total number of felt reports
CDI 3.8 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 327 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 0.136 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.87 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 155 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 us2000ae42 Id of event.
Event Code 2000ae42 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000ae42, A comma-separated list of event ids that are associated to an event.

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