Light earthquake, 4 mag strikes near Neiafu in Tonga

A light earthquake magnitude 4 (ml/mb) has occurred on Thursday, 222 km WNW of Neiafu, Tonga (138 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The 4-magnitude earthquake was detected at 09:26:22 / 9:26 am (local time epicenter). The epicenter of the earthquake was roughly 303.06 km (188 miles) below the earth’s surface. Global time and date of event 19/05/16 / 2016-05-19 21:26:22 / May 19, 2016 @ 9:26 pm UTC/GMT. Exact location of earthquake, longitude -176.0047 West, latitude -18.0957 South, depth = 303.06 km. Id of earthquake: us20005y2j. Event ids that are associated: us20005y2j.

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 three and in the last 365 days sixteen earthquakes of magnitude 3.0 or greater that has occurred nearby. There are an estimated 13,000 light quakes in the world each year.

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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, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 222 km WNW of Neiafu, Tonga. This information comes from the USGS Earthquake Notification Service.

Neiafu Tonga

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Parameter	Value	Description
Magnitude	4 mb	The magnitude for the event.
Longitude	-176.0047° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	-18.0957° South	Decimal degrees latitude. Negative values for southern latitudes.
Depth	303.06 km	Depth of the event in kilometers.
Place	222km WNW of Neiafu, Tonga	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2016-05-19 21:26:22	Time when the event occurred. UTC/GMT
Updated	2016-05-28 03:28:43	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	246	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	5.817	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.91 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	108	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	us20005y2j	Id of event.
Event Code	20005y2j	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us20005y2j,	A comma-separated list of event ids that are associated to an event.

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Light earthquake, 4 mag strikes near Neiafu in Tonga

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