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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.6 mag has occurred near Vaini in Tonga



Earthquake location -21.3244S, -175.4733WA light earthquake with magnitude 4.6 (ml/mb) was reported 31 kilometers (19 miles) from Vaini in Tonga on Friday. Global date and time of event UTC/GMT: 02/06/17 / 2017-06-02 20:33:13 / June 2, 2017 @ 8:33 pm. Exact location of event, depth 10 km, -175.4733° West, -21.3244° South. All ids that are associated to the event: us20009lcs. Unique identifier: us20009lcs. The epicenter of the earthquake was roughly 10 km (6 miles) below the earth’s surface. The 4.6-magnitude earthquake has occurred at 08:33:13 / 8:33 am (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

Close country/countries, Tonga (c. 123 000 pop) (That might be effected). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was ‘Ohonua, Nuku‘alofa. Event epicenter was 35 km (22 miles) from Nuku‘alofa (c. 22 400 pop), 54 km (34 miles) from ‘Ohonua (c. 1 200 pop).

In the past 24 hours, there have been one, in the last 10 days two, in the past 30 days four and in the last 365 days seventeen 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.

Did you feel anything?

Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. 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: 31 km WSW of Vaini, Tonga.

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More information

Parameter Value Description
Magnitude 4.6 mb The magnitude for the event.
Longitude -175.4733° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -21.3244° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 31km WSW of Vaini, Tonga Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-06-02 20:33:13 Time when the event occurred. UTC/GMT
Updated 2017-06-30 21:37:38 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 5.668 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.05 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 120 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 us20009lcs Id of event.
Event Code 20009lcs An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us20009lcs, A comma-separated list of event ids that are associated to an event.

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