Minor earthquake: M3.5 quake has struck near San Ignacio in Costa Rica

A minor earthquake magnitude 3.5 (ml/mb) has occurred on Friday, 7 kilometers (4 miles) from San Ignacio in Costa Rica. Exact location of event, depth 11.23 km, -84.147° West, 9.7313° North. The earthquake was roughly at a depth of 11.23 km (7 miles). The 3.5-magnitude earthquake was detected at 09:33:19 / 9:33 am (local time epicenter). Event ids that are associated to the earthquake: us2000ggxn. Id of event: us2000ggxn. Exact time and date of event in UTC/GMT: 27/07/18 / 2018-07-27 15:33:19 / July 27, 2018 @ 3:33 pm.

Nearest cities/city/towns to hypocenter/epicentrum was Siquirres, Mercedes, Puntarenas (min 5000 pop). Nearby country/countries that might be effected, Costa Rica (c. 4 516 000 pop). Event epicenter was 24 km (15 miles) from San José (c. 335 000 pop), 29 km (18 miles) from San Francisco (c. 55 900 pop), 32 km (20 miles) from Alajuela (c. 47 500 pop), 33 km (21 miles) from Paraíso (c. 39 700 pop), 80 km (50 miles) from Puntarenas (c. 35 700 pop), 63 km (39 miles) from San Isidro (c. 34 900 pop).

There are an estimated 130,000 minor quakes in the world each year. 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 twenty-nine earthquakes of magnitude 3.0 or greater that have been detected nearby. Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage.

How would you describe the shaking?

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: 7 km SSE of San Ignacio, Costa Rica.

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Parameter	Value	Description
Magnitude	3.5 mb	The magnitude for the event.
Longitude	-84.147° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	9.7313° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	11.23 km	Depth of the event in kilometers.
Place	7km SSE of San Ignacio, 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	2018-07-27 15:33:19	Time when the event occurred. UTC/GMT
Updated	2018-07-29 23:16:24	Time when the event was most recently updated. UTC/GMT
Timezone offset	-360	Timezone offset from UTC in minutes at the event epicenter.
Felt	2	The total number of felt reports
CDI	3.1	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	189	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	0.14	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.24 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	165	The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type	ml	The method or algorithm used to calculate the preferred magnitude for the event.
Event Type	earthquake	Type of seismic event.
Event ID	us2000ggxn	Id of event.
Event Code	2000ggxn	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us2000ggxn,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake: M3.5 quake has struck near San Ignacio in Costa Rica

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