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Light earthquake, 4.5 mag was detected near Quepos in Costa Rica

Posted by admin on September 29, 2025 0 Comments

Earthquake location 9.0746S, -84.057WA light earthquake magnitude 4.5 (ml/mb) has occurred on Monday, 41 kilometers (25 miles) from Quepos in Costa Rica. The temblor was reported at 05:42:36 / 5:42 am (local time epicenter). All ids that are associated to the event: us6000rdjb. Unique identifier: us6000rdjb. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location, longitude -84.057° West, latitude 9.0746° North, depth = 29.266 km. Exact time and date of earthquake 29/09/25 / 2025-09-29 05:42:36 / September 29, 2025 @ 5:42 am UTC/GMT. The epicenter was at a depth of 29.266 km (18 miles).

Earthquake epicenter was 96 km (59 miles) from San José (c. 335 000 pop), 87 km (54 miles) from Paraíso (c. 39 700 pop), 51 km (32 miles) from San Isidro (c. 34 900 pop), 93 km (58 miles) from Curridabat (c. 34 600 pop), 89 km (55 miles) from San Miguel (c. 28 800 pop), 95 km (59 miles) from San Pedro (c. 27 500 pop), 88 km (55 miles) from San Rafael Abajo (c. 27 400 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Santa Ana, Granadilla, Concepción. Close country/countries that might be effected, Costa Rica (c. 4 516 000 pop).

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 six earthquakes of magnitude 3.0 or greater that have been detected nearby. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. There are an estimated 13,000 light quakes in the world each year.

Did you feel the quake?

How did you react? Was there any damage to buildings? Leave a comment or report about shaking, activity and damage at your home, city and country. 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: 41 km SSE of Quepos, Costa Rica.

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More information

Parameter Value Description
Magnitude 4.5 mb The magnitude for the event.
Longitude -84.057° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 9.0746° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 29.266 km Depth of the event in kilometers.
Place 41 km SSE 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 2025-09-29 05:42:36 Time when the event occurred. UTC/GMT
Updated 2025-09-29 09:09:55 Time when the event was most recently updated. UTC/GMT
Timezone offset Timezone offset from UTC in minutes at the event epicenter.
Felt 1 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 312 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 72 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.665 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.81 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 157 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 us6000rdjb Id of event.
Event Code 6000rdjb An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000rdjb, A comma-separated list of event ids that are associated to an event.

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