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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.1 mag strikes near Golfito in Costa Rica

Earthquake location 8.7034S, -83.398WA light earthquake magnitude 4.1 (ml/mb) strikes 26 kilometers (16 miles) from Golfito in Costa Rica on Sunday. Date and time of earthquake in UTC/GMT: 23/12/18 / 2018-12-23 09:55:09 / December 23, 2018 @ 9:55 am. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The earthquake was roughly at a depth of 20.09 km (12 miles). Id of earthquake: us2000j2wp. Event ids that are associated: us2000j2wp. The temblor was picked up at 03:55:09 / 3:55 am (local time epicenter). Exact location of earthquake, longitude -83.398 West, latitude 8.7034 North, depth = 20.09 km.

Close country/countries that might be effected, Costa Rica (c. 4 516 000 pop), Panama (c. 3 411 000 pop). Earthquake epicenter was 82 km (51 miles) from San Isidro (c. 34 900 pop), 76 km (47 miles) from Puerto Armuelles (c. 18 800 pop), 88 km (55 miles) from La Concepción (c. 16 900 pop), 53 km (33 miles) from Buenos Aires (c. 11 700 pop), 84 km (52 miles) from Volcán (c. 11 200 pop), 76 km (47 miles) from Daniel Flores (c. 10 000 pop). Nearest cities/city/towns to hypocenter/epicentrum was La Concepción, Volcán, San Isidro (min 5000 pop).

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 twenty-nine earthquakes of magnitude 3.0 or greater that have been detected nearby.

Did you feel it?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home and country. This data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 26 km WNW of Golfito, Costa Rica.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude -83.398° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 8.7034° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 20.09 km Depth of the event in kilometers.
Place 26km WNW of Golfito, 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 2018-12-23 09:55:09 Time when the event occurred. UTC/GMT
Updated 2019-01-13 09:34:41 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 259 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 0.707 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.04 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 161 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 us2000j2wp Id of event.
Event Code 2000j2wp An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000j2wp, A comma-separated list of event ids that are associated to an event.

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