Light earthquake: M4.5 quake has struck near San Antonio in Puerto Rico

A light earthquake magnitude 4.5 (ml/mb) has occurred on Wednesday, 61 kilometers (38 miles) from San Antonio in Puerto Rico. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The 4.5-magnitude earthquake has occurred at 07:08:09 / 7:08 am (local time epicenter). Global time and date of event 02/10/19 / 2019-10-02 11:08:09 / October 2, 2019 @ 11:08 am UTC/GMT. The epicenter was at a depth of 10 km (6 miles). All ids that are associated to the event: pt19275000, us70005ps5. Unique identifier: us70005ps5. Exact location, longitude -67.2758° West, latitude 19.0216° North, depth = 10 km.

Country/countries that might be effected, Puerto Rico (c. 3 917 000 pop). Epicenter of the event was 92 km (57 miles) from Mayagüez (c. 78 600 pop), 85 km (53 miles) from Arecibo (c. 49 300 pop), 67 km (42 miles) from Aguadilla (c. 16 100 pop), 64 km (40 miles) from Isabela (c. 12 500 pop), 82 km (51 miles) from San Sebastián (c. 11 600 pop), 91 km (57 miles) from Lares (c. 7 200 pop), 83 km (52 miles) from Añasco (c. 6 100 pop). Closest city/cities/towns to epicentrum/hypocenter was Mayagüez, Lares, Las Marías (min 5000 pop).

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. Each year there are an estimated 13,000 light earthquakes in the world. In the past 24 hours, there have been eleven, in the last 10 days two hundred and thirty-one, in the past 30 days two hundred and fourty-nine and in the last 365 days six hundred and sixteen earthquakes of magnitude 3.0 or greater that have been detected in the same area.

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. 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: 61 km NNW of San Antonio, Puerto Rico.

More information

Parameter	Value	Description
Magnitude	4.5 mb	The magnitude for the event.
Longitude	-67.2758° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	19.0216° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	10 km	Depth of the event in kilometers.
Place	61km NNW of San Antonio, 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	2019-10-02 11:08:09	Time when the event occurred. UTC/GMT
Updated	2019-10-02 11:26:20	Time when the event was most recently updated. UTC/GMT
Timezone offset	-240	Timezone offset from UTC in minutes at the event epicenter.
Felt	1	The total number of felt reports
CDI	3.8	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	,pt,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	0.809	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.54 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	135	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	us70005ps5	Id of event.
Event Code	70005ps5	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,pt19275000,us70005ps5,	A comma-separated list of event ids that are associated to an event.

Parameter

Value

Description

Magnitude

4.5 mb

The magnitude for the event.

Longitude

-67.2758° West

Decimal degrees longitude. Negative values for western longitudes.

Latitude

19.0216° North

Decimal degrees latitude. Negative values for southern latitudes.

Depth

10 km

Depth of the event in kilometers.

Place

61km NNW of San Antonio, 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

2019-10-02 11:08:09

Time when the event occurred. UTC/GMT

Updated

2019-10-02 11:26:20

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

3.8

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

312

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,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

0.809

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

Root Mean Square

0.54 sec

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

Azimuthal Gap

135

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

us70005ps5

Id of event.

Event Code

70005ps5

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

Event IDS

,pt19275000,us70005ps5,

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

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Light earthquake: M4.5 quake has struck near San Antonio in Puerto Rico

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