Light earthquake: M4.6 quake has struck near Pangai in Tonga

A light earthquake magnitude 4.6 (ml/mb) has occurred on Saturday, 170 km WNW of Pangai, Tonga (106 miles). Event ids that are associated to the earthquake: us2000b2jk. Id of event: us2000b2jk. Exact location of earthquake, longitude -175.7258 West, latitude -18.9821 South, depth = 195.22 km. The earthquake occurred at a depth of 195.22 km (121 miles). The temblor was picked up at 05:54:38 / 5:54 am (local time epicenter). Date and time of earthquake in UTC/GMT: 07/10/17 / 2017-10-07 17:54:38 / October 7, 2017 @ 5:54 pm. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

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 twenty earthquakes of magnitude 3.0 or greater that was reported nearby. There are an estimated 13,000 light quakes in the world each year. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

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. 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: 170 km WNW of Pangai, Tonga.

Pangai Tonga

More information

Parameter	Value	Description
Magnitude	4.6 mb	The magnitude for the event.
Longitude	-175.7258° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	-18.9821° South	Decimal degrees latitude. Negative values for southern latitudes.
Depth	195.22 km	Depth of the event in kilometers.
Place	170km WNW of Pangai, Tonga	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2017-10-07 17:54:38	Time when the event occurred. UTC/GMT
Updated	2017-10-07 21:18:07	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	326	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	5.486	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.93 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	80	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	us2000b2jk	Id of event.
Event Code	2000b2jk	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us2000b2jk,	A comma-separated list of event ids that are associated to an event.

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Light earthquake: M4.6 quake has struck near Pangai in Tonga

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