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Earthquake breaking news, Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.7 mag was detected near Ciudad Cortes in Costa Rica


Earthquake location 8.7879S, -83.8601WA light earthquake with magnitude 4.7 (ml/mb) was detected on Wednesday, 41 kilometers (25 miles) from Ciudad Cortes in Costa Rica. Unique identifier: us1000bu20. Ids that are associated to the event: us1000bu20. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Global date and time of event UTC/GMT: 20/12/17 / 2017-12-20 23:24:36 / December 20, 2017 @ 11:24 pm. The 4.7-magnitude earthquake was detected at 17:24:36 / 5:24 pm (local time epicenter). The epicenter of the earthquake was roughly 10 km (6 miles) below the earth’s surface. Exact location, longitude -83.8601° West, latitude 8.7879° North, depth = 10 km.

Nearest cities/city/villages to epicentrum/hypocenter was Golfito, Quepos, Buenos Aires (min 5000 pop). Country/countries that might be effected, Costa Rica (c. 4 516 000 pop). Event epicenter was 67 km (42 miles) from San Isidro (c. 34 900 pop), 72 km (45 miles) from Buenos Aires (c. 11 700 pop), 64 km (40 miles) from Daniel Flores (c. 10 000 pop), 78 km (49 miles) from Quepos (c. 7 800 pop), 85 km (53 miles) from Golfito (c. 6 800 pop), 61 km (38 miles) from Mercedes (c. 5 500 pop).

There are an estimated 13,000 light quakes in the world each year. 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 two and in the last 365 days eleven earthquakes of magnitude 3.0 or greater that have been detected in the same area.

Did you feel the quake?

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: 41 km WSW of Ciudad Cortes, Costa Rica.

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More information

Parameter Value Description
Magnitude 4.7 mb The magnitude for the event.
Longitude -83.8601° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 8.7879° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 41km WSW of Ciudad Cortes, 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 2017-12-20 23:24:36 Time when the event occurred. UTC/GMT
Updated 2017-12-21 00:00:42 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 2.2 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 340 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 0.652 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.12 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 139 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 us1000bu20 Id of event.
Event Code 1000bu20 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000bu20, A comma-separated list of event ids that are associated to an event.

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