Light earthquake, 4.2 mag was detected near Hihifo in Tonga

A light earthquake magnitude 4.2 (ml/mb) has occurred on Thursday, 220 km ESE of Hihifo, Tonga (137 miles). The earthquake was roughly at a depth of 35.83 km (22 miles). Exact location of event, longitude -171.8637 West, latitude -16.7678 South, depth = 35.83 km. The temblor was detected at 12:29:28 / 12:29 pm (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Id of earthquake: us20007dur. Event ids that are associated: us20007dur. Global time and date of event 06/10/16 / 2016-10-06 23:29:28 / October 6, 2016 @ 11:29 pm UTC/GMT.

In the past 24 hours, there have been two, in the last 10 days two, in the past 30 days two and in the last 365 days fifteen earthquakes of magnitude 3.0 or greater that have been detected in the same area. 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.

Questions or comments?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity 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: 220 km ESE of Hihifo, Tonga. This data comes from the USGS Earthquake Notification Service.

Hihifo Tonga

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Parameter	Value	Description
Magnitude	4.2 mb	The magnitude for the event.
Longitude	-171.8637° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	-16.7678° South	Decimal degrees latitude. Negative values for southern latitudes.
Depth	35.83 km	Depth of the event in kilometers.
Place	220km ESE of Hihifo, Tonga	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2016-10-06 23:29:28	Time when the event occurred. UTC/GMT
Updated	2016-10-28 03:44:51	Time when the event was most recently updated. UTC/GMT
Timezone offset	-660	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	271	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	2.944	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.86 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	210	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	us20007dur	Id of event.
Event Code	20007dur	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us20007dur,	A comma-separated list of event ids that are associated to an event.

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Light earthquake, 4.2 mag was detected near Hihifo in Tonga

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