Light earthquake 4.2 mag, 28 km NW of Saint John’s, Antigua and Barbuda

A light earthquake with magnitude 4.2 (ml/mb) was reported 28 kilometers (17 miles) from Saint John’s in Antigua and Barbuda on Friday. Exact location of earthquake, -62.0704° West, 17.2665° North, depth 110.15 km. Global time and date of event 30/12/17 / 2017-12-30 03:14:19 / December 30, 2017 @ 3:14 am UTC/GMT. All ids that are associated to the event: pt17364001, us1000bxzi. Unique identifier: us1000bxzi. The temblor was picked up at 23:14:19 / 11:14 pm (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The earthquake occurred at a depth of 110.15 km (68 miles) below the earth’s surface.

Close country/countries, Antigua and Barbuda (c. 87 000 pop), Saint Kitts and Nevis (c. 51 000 pop) (That might be effected). Epicenter of the event was 29 km (18 miles) from Saint John’s (c. 24 200 pop), 70 km (43 miles) from Basseterre (c. 12 900 pop), 59 km (36 miles) from Fig Tree (c. 2 900 pop), 55 km (34 miles) from Market Shop (c. 2 600 pop), 81 km (50 miles) from Saint Paul’s (c. 2 500 pop), 79 km (49 miles) from Middle Island (c. 2 300 pop). Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Sandy Point Town, Dieppe Bay Town, Saint Paul’s.

There are an estimated 13,000 light quakes in the world each year. In the past 24 hours, there have been two, in the last 10 days two, in the past 30 days four and in the last 365 days twelve 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.

How would you describe the shaking?

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. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 28 km NW of Saint John’s, Antigua and Barbuda. This data comes from the USGS Earthquake Notification Service.

More information

Parameter	Value	Description
Magnitude	4.2 mb	The magnitude for the event.
Longitude	-62.0704° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	17.2665° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	110.15 km	Depth of the event in kilometers.
Place	28km NW of Saint John's, Antigua and Barbuda	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2017-12-30 03:14:19	Time when the event occurred. UTC/GMT
Updated	2017-12-30 09:07:07	Time when the event was most recently updated. UTC/GMT
Timezone offset	-240	Timezone offset from UTC in minutes at the event epicenter.
Felt	8	The total number of felt reports
CDI	3.3	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	274	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	0.965	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.33 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	151	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	us1000bxzi	Id of event.
Event Code	1000bxzi	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,pt17364001,us1000bxzi,	A comma-separated list of event ids that are associated to an event.

Parameter

Value

Description

Magnitude

4.2 mb

The magnitude for the event.

Longitude

-62.0704° West

Decimal degrees longitude. Negative values for western longitudes.

Latitude

17.2665° North

Decimal degrees latitude. Negative values for southern latitudes.

Depth

110.15 km

Depth of the event in kilometers.

Place

28km NW of Saint John's, Antigua and Barbuda

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

Time

2017-12-30 03:14:19

Time when the event occurred. UTC/GMT

Updated

2017-12-30 09:07:07

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

3.3

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

274

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

0.965

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

Root Mean Square

0.33 sec

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

Azimuthal Gap

151

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

us1000bxzi

Id of event.

Event Code

1000bxzi

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

Event IDS

,pt17364001,us1000bxzi,

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

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Light earthquake 4.2 mag, 28 km NW of Saint John’s, Antigua and Barbuda

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