Light earthquake 4.8 mag, 135 km S of `Ohonua, Tonga

A light earthquake with magnitude 4.8 (ml/mb) was reported 135 km S of `Ohonua, Tonga (84 miles) on Thursday. Exact location, longitude -175.1254° West, latitude -22.5452° South, depth = 97.76 km. The 4.8-magnitude earthquake has occurred at 10:31:51 / 10:31 am (local time epicenter). Event ids that are associated to the earthquake: us10002whk. Id of event: us10002whk. 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 97.76 km (61 miles). Global date and time of event UTC/GMT: 30/07/15 / 2015-07-30 22:31:51 / July 30, 2015 @ 10:31 pm.

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. In the past 24 hours, there have been one, in the last 10 days two, in the past 30 days two and in the last 365 days nine earthquakes of magnitude 3.0 or greater that has struck near.

Did you feel the quake?

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. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 135 km S of `Ohonua, Tonga. This information comes from the USGS Earthquake Notification Service.

`Ohonua Tonga

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Parameter	Value	Description
Magnitude	4.8 mb	The magnitude for the event.
Longitude	-175.1254° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	-22.5452° South	Decimal degrees latitude. Negative values for southern latitudes.
Depth	97.76 km	Depth of the event in kilometers.
Place	135km 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	2015-07-30 22:31:51	Time when the event occurred. UTC/GMT
Updated	2015-07-30 22:59:27	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	354	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	7.133	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.84 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	128	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	us10002whk	Id of event.
Event Code	10002whk	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us10002whk,	A comma-separated list of event ids that are associated to an event.

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Light earthquake 4.8 mag, 135 km S of `Ohonua, Tonga

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