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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.3 mag has occurred near Neiafu in Tonga

Posted by admin on November 12, 2015 0 Comments

Earthquake location -18.0464S, -173.8149WA light earthquake with magnitude 4.3 (ml/mb) was detected on Wednesday, 69 kilometers (43 miles) from Neiafu in Tonga. Exact location of event, depth 10 km, -173.8149° West, -18.0464° South. The earthquake occurred at a depth of 10 km (6 miles) below the earth’s surface. The temblor was picked up at 01:20:06 / 1:20 am (local time epicenter). Unique identifier: us10003rxr. Ids that are associated to the event: us10003rxr. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Global date and time of event UTC/GMT: 21/10/15 / 2015-10-21 13:20:06 / October 21, 2015 @ 1:20 pm.

Nearby country/countries, Tonga (c. 123 000 pop) (That might be effected). Event epicenter was 69 km (43 miles) from Neiafu (c. 4 300 pop). Nearest cities/city/towns to hypocenter/epicentrum was Neiafu (min 5000 pop).

In the past 24 hours, there have been two, in the last 10 days three, in the past 30 days five and in the last 365 days twenty-seven earthquakes of magnitude 3.0 or greater that has struck near. Every year there are an estimated 13,000 light earthquakes in the world. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

Questions or comments?

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. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 69 km NNE of Neiafu, Tonga. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.3 mb The magnitude for the event.
Longitude -173.8149° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -18.0464° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 69km NNE 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 2015-10-21 13:20:06 Time when the event occurred. UTC/GMT
Updated 2015-11-12 14:23:31 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 284 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 3.827 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.83 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 87 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 us10003rxr Id of event.
Event Code 10003rxr An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us10003rxr, A comma-separated list of event ids that are associated to an event.

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