Light earthquake, 4.1 mag was detected near Guanica in Puerto Rico

A light earthquake with magnitude 4.1 (ml/mb) was reported 18 kilometers (11 miles) from Guanica in Puerto Rico on Thursday. The 4.1-magnitude earthquake has occurred at 00:59:47 / 12:59 am (local time epicenter). The earthquake was roughly at a depth of 10 km (6 miles). Global time and date of event 30/01/20 / 2020-01-30 04:59:47 / January 30, 2020 @ 4:59 am UTC/GMT. Exact location of earthquake, longitude -66.8635 West, latitude 17.812 North, depth = 10 km. Unique identifier: us60007js8. Ids that are associated to the event: us60007js8. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

Closest city/cities/towns to epicentrum/hypocenter was Toa Alta, Ceiba, Vega Alta (min 5000 pop). Nearby country/countries that might be effected, Puerto Rico (c. 3 917 000 pop). Epicenter of the event was 34 km (21 miles) from Ponce (c. 152 600 pop), 52 km (32 miles) from Mayagüez (c. 78 600 pop), 75 km (47 miles) from Arecibo (c. 49 300 pop), 86 km (54 miles) from Vega Baja (c. 29 300 pop), 79 km (49 miles) from Barceloneta (c. 22 300 pop), 82 km (51 miles) from Guayama (c. 21 600 pop).

There are an estimated 13,000 light earthquakes 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 fourteen, in the last 10 days two hundred and seventeen, in the past 30 days eight hundred and sixty-two and in the last 365 days nine hundred and thirty-three earthquakes of magnitude 3.0 or greater that have been detected in the same area.

Did you feel anything?

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. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 18 km SSE of Guanica, Puerto Rico. This data comes from the USGS Earthquake Notification Service.

More information

Parameter	Value	Description
Magnitude	4.1 mb	The magnitude for the event.
Longitude	-66.8635° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	17.812° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	10 km	Depth of the event in kilometers.
Place	18km SSE of Guanica, 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	2020-01-30 04:59:47	Time when the event occurred. UTC/GMT
Updated	2020-01-30 05:16:58	Time when the event was most recently updated. UTC/GMT
Timezone offset	-240	Timezone offset from UTC in minutes at the event epicenter.
Felt	7	The total number of felt reports
CDI	2.9	The maximum reported intensity for the event.
MMI	3.073	The maximum estimated instrumental intensity for the event.
Alert Level	green	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	261	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	0.218	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.86 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	116	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	us60007js8	Id of event.
Event Code	60007js8	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us60007js8,	A comma-separated list of event ids that are associated to an event.

Parameter

Value

Description

Magnitude

4.1 mb

The magnitude for the event.

Longitude

-66.8635° West

Decimal degrees longitude. Negative values for western longitudes.

Latitude

17.812° North

Decimal degrees latitude. Negative values for southern latitudes.

Depth

10 km

Depth of the event in kilometers.

Place

18km SSE of Guanica, 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

2020-01-30 04:59:47

Time when the event occurred. UTC/GMT

Updated

2020-01-30 05:16:58

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

2.9

The maximum reported intensity for the event.

MMI

3.073

The maximum estimated instrumental intensity for the event.

Alert Level

green

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

261

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

,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

0.218

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

Root Mean Square

0.86 sec

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

Azimuthal Gap

116

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

us60007js8

Id of event.

Event Code

60007js8

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

Event IDS

,us60007js8,

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

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Light earthquake, 4.1 mag was detected near Guanica in Puerto Rico

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