Light earthquake 4.7 mag, 296 km S of `Ohonua, Tonga

A light earthquake with magnitude 4.7 (ml/mb) was detected on Tuesday, 296 km S of `Ohonua, Tonga (184 miles). Id of earthquake: us100035da. Event ids that are associated: us100035da. Global time and date of event 11/08/15 / 2015-08-11 20:43:48 / August 11, 2015 @ 8:43 pm UTC/GMT. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The temblor was picked up at 08:43:48 / 8:43 am (local time epicenter). The epicenter was at a depth of 22.59 km (14 miles). Exact location of event, depth 22.59 km, -174.7604° West, -24.0016° South.

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. In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days two and in the last 365 days eight earthquakes of magnitude 3.0 or greater that was reported nearby.

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. 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: 296 km S of `Ohonua, Tonga.

`Ohonua Tonga

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Parameter	Value	Description
Magnitude	4.7 mb	The magnitude for the event.
Longitude	-174.7604° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	-24.0016° South	Decimal degrees latitude. Negative values for southern latitudes.
Depth	22.59 km	Depth of the event in kilometers.
Place	296km S 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	2015-08-11 20:43:48	Time when the event occurred. UTC/GMT
Updated	2015-09-10 20:05:40	Time when the event was most recently updated. UTC/GMT
Timezone offset	-720	Timezone offset from UTC in minutes at the event epicenter.
Felt	0	The total number of felt reports
CDI	1	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	340	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	6.652	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	1.26 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	167	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	us100035da	Id of event.
Event Code	100035da	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us100035da,	A comma-separated list of event ids that are associated to an event.

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Light earthquake 4.7 mag, 296 km S of `Ohonua, Tonga

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