Light earthquake, 4.5 mag has occurred near Vaini in Tonga

A light earthquake magnitude 4.5 (ml/mb) has struck on Wednesday, 169 km WSW of Vaini, Tonga (105 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The earthquake was roughly at a depth of 152.04 km (94 miles). The temblor was detected at 19:27:25 / 7:27 pm (local time epicenter). Global time and date of event 12/09/19 / 2019-09-12 07:27:25 / September 12, 2019 @ 7:27 am UTC/GMT. Unique identifier: us60005lbh. Ids that are associated to the event: us60005lbh. Exact location of event, longitude -176.6015 West, latitude -21.9969 South, depth = 152.04 km.

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

How would you describe the shaking?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 169 km WSW of Vaini, Tonga.

Tonga Vaini

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Parameter	Value	Description
Magnitude	4.5 mb	The magnitude for the event.
Longitude	-176.6015° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	-21.9969° South	Decimal degrees latitude. Negative values for southern latitudes.
Depth	152.04 km	Depth of the event in kilometers.
Place	169km WSW of Vaini, Tonga	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2019-09-12 07:27:25	Time when the event occurred. UTC/GMT
Updated	2019-10-06 05:34:14	Time when the event was most recently updated. UTC/GMT
Timezone offset	-720	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	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	,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	6.571	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	1.22 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	58	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	us60005lbh	Id of event.
Event Code	60005lbh	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us60005lbh,	A comma-separated list of event ids that are associated to an event.

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Light earthquake, 4.5 mag has occurred near Vaini in Tonga

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