Moderate earthquake, 5.2 mag strikes near `Ohonua in Tonga

A moderate earthquake magnitude 5.2 (ml/mb) has occurred on Wednesday, 74 kilometers (46 miles) from `Ohonua in Tonga. Id of earthquake: us200080vn. Event ids that are associated: us200080vn. The 5.2-magnitude earthquake has occurred at 12:18:42 / 12:18 pm (local time epicenter). The earthquake occurred at a depth of 9.8 km (6 miles) below the earth’s surface. Exact location of event, longitude -174.5071 West, latitude -21.8583 South, depth = 9.8 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact time and date of earthquake 15/12/16 / 2016-12-15 00:18:42 / December 15, 2016 @ 12:18 am UTC/GMT.

Nearby country/countries that might be effected, Tonga (c. 123 000 pop). Earthquake epicenter was 107 km (67 miles) from Nuku‘alofa (c. 22 400 pop), 74 km (46 miles) from ‘Ohonua (c. 1 200 pop). Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Nuku‘alofa, ‘Ohonua.

There are an estimated 1320 moderate quakes in the world each year. 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 struck near. Earthquakes 5.0 to 6.0 may cause light damage to buildings and other structures.

Questions or comments?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home 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: 74 km SE of `Ohonua, Tonga.

More information

Parameter	Value	Description
Magnitude	5.2 mb	The magnitude for the event.
Longitude	-174.5071° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	-21.8583° South	Decimal degrees latitude. Negative values for southern latitudes.
Depth	9.8 km	Depth of the event in kilometers.
Place	74km SE of `Ohonua, Tonga	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2016-12-15 00:18:42	Time when the event occurred. UTC/GMT
Updated	2016-12-15 00:37:53	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	416	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	5.108	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	1.64 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	68	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	us200080vn	Id of event.
Event Code	200080vn	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us200080vn,	A comma-separated list of event ids that are associated to an event.

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Moderate earthquake, 5.2 mag strikes near `Ohonua in Tonga

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