Light earthquake 4.5 mag, 28 km NW of Saint John’s, Antigua and Barbuda

A light earthquake magnitude 4.5 (ml/mb) has struck on Friday, 28 kilometers (17 miles) from Saint John’s in Antigua and Barbuda. Event ids that are associated to the earthquake: pt17364001. Id of event: pt17364001. The epicenter of the earthquake was roughly 95.1 km (59 miles) below the earth’s surface. Exact time and date of earthquake 30/12/17 / 2017-12-30 03:14:19 / December 30, 2017 @ 3:14 am UTC/GMT. Exact location, longitude -62.073° West, latitude 17.262° North, depth = 95.1 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The 4.5-magnitude earthquake was detected at 23:14:19 / 11:14 pm (local time epicenter).

Close country/countries, Antigua and Barbuda (c. 87 000 pop), Saint Kitts and Nevis (c. 51 000 pop) (That might be effected). The epicenter was 29 km (18 miles) from Saint John’s (c. 24 200 pop), 69 km (43 miles) from Basseterre (c. 12 900 pop), 58 km (36 miles) from Fig Tree (c. 2 900 pop), 55 km (34 miles) from Market Shop (c. 2 600 pop), 80 km (50 miles) from Saint Paul’s (c. 2 500 pop), 79 km (49 miles) from Middle Island (c. 2 300 pop), 73 km (45 miles) from Nicola Town (c. 2 100 pop). Nearest cities/city/towns to hypocenter/epicentrum was Sandy Point Town, Dieppe Bay Town, Saint Paul’s (min 5000 pop).

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. There are an estimated 13,000 light quakes in the world each year. In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days three and in the last 365 days eleven earthquakes of magnitude 3.0 or greater that has occurred nearby.

How would you describe the shaking?

Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. 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: 28 km NW of Saint John’s, Antigua and Barbuda.

More information

Parameter	Value	Description
Magnitude	4.5 mb	The magnitude for the event.
Longitude	-62.073° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	17.262° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	95.1 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 03:22:13	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	3.4	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	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	22	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	172.799986176	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	pt17364001	Id of event.
Event Code	17364001	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,pt17364001,	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

-62.073° West

Decimal degrees longitude. Negative values for western longitudes.

Latitude

17.262° North

Decimal degrees latitude. Negative values for southern latitudes.

Depth

95.1 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 03:22:13

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

3.4

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,

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

172.799986176

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

pt17364001

Id of event.

Event Code

17364001

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

Event IDS

,pt17364001,

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

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Light earthquake 4.5 mag, 28 km NW of Saint John’s, Antigua and Barbuda

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