Light earthquake: M4.9 quake has struck near Tallaboa Alta in Puerto Rico

A light earthquake with magnitude 4.9 (ml/mb) was detected on Saturday, 3 kilometers (2 miles) from Tallaboa Alta in Puerto Rico. Exact location, longitude -66.689° West, latitude 18.081° North, depth = 10 km. The earthquake occurred at a depth of 10 km (6 miles) below the earth’s surface. The temblor was reported at 21:21:16 / 9:21 pm (local time epicenter). Exact time and date of event in UTC/GMT: 29/12/19 / 2019-12-29 01:21:16 / December 29, 2019 @ 1:21 am. 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: pt19363052. Id of event: pt19363052.

Close country/countries that might be effected, Puerto Rico (c. 3 917 000 pop). Earthquake epicenter was 75 km (47 miles) from San Juan (c. 418 100 pop), 66 km (41 miles) from Bayamón (c. 203 500 pop), 84 km (52 miles) from Carolina (c. 170 400 pop), 11 km (7 miles) from Ponce (c. 152 600 pop), 70 km (43 miles) from Caguas (c. 86 800 pop), 68 km (42 miles) from Guaynabo (c. 81 400 pop), 49 km (31 miles) from Mayagüez (c. 78 600 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Naguabo, Punta Santiago, Río Grande.

In the past 24 hours, there have been fifteen, in the last 10 days twenty-three, in the past 30 days thirty-five and in the last 365 days one hundred and twenty earthquakes of magnitude 3.0 or greater that has occurred nearby. 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.

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. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 3 km NNE of Tallaboa Alta, Puerto Rico. This information comes from the USGS Earthquake Notification Service.

More information

Parameter	Value	Description
Magnitude	4.9 mb	The magnitude for the event.
Longitude	-66.689° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	18.081° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	10 km	Depth of the event in kilometers.
Place	3km NNE of Tallaboa Alta, Puerto Rico	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2019-12-29 01:21:16	Time when the event occurred. UTC/GMT
Updated	2019-12-29 01:24:43	Time when the event was most recently updated. UTC/GMT
Timezone offset	-240	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	369	A number describing how significant the event is. Larger numbers indicate a more significant event.
Network	pt	The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources	,pt,	A comma-separated list of network contributors.
Number of Stations Used	12	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance		Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap		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	pt19363052	Id of event.
Event Code	19363052	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,pt19363052,	A comma-separated list of event ids that are associated to an event.

Parameter

Value

Description

Magnitude

4.9 mb

The magnitude for the event.

Longitude

-66.689° West

Decimal degrees longitude. Negative values for western longitudes.

Latitude

18.081° North

Decimal degrees latitude. Negative values for southern latitudes.

Depth

10 km

Depth of the event in kilometers.

Place

3km NNE of Tallaboa Alta, Puerto Rico

Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.

Time

2019-12-29 01:21:16

Time when the event occurred. UTC/GMT

Updated

2019-12-29 01:24:43

Time when the event was most recently updated. UTC/GMT

Timezone offset

-240

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

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

369

A number describing how significant the event is. Larger numbers indicate a more significant event.

Network

The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.

Sources

,pt,

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

Horizontal distance from the epicenter to the nearest station (in degrees).

Root Mean Square

sec

The root-mean-square (RMS) travel time residual, in sec, using all weights.

Azimuthal Gap

The largest azimuthal gap between azimuthally adjacent stations (in degrees).

Magnitude Type

The method or algorithm used to calculate the preferred magnitude for the event.

Event Type

earthquake

Type of seismic event.

Event ID

pt19363052

Id of event.

Event Code

19363052

An identifying code assigned by, and unique from, the corresponding source for the event.

Event IDS

,pt19363052,

A comma-separated list of event ids that are associated to an event.

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Light earthquake: M4.9 quake has struck near Tallaboa Alta in Puerto Rico

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