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Moderate World Earthquakes Magnitude 5–5.9

Moderate earthquake, 5.2 mag has occurred near Neiafu in Tonga

Earthquake location -18.6136S, -174.4673WA moderate earthquake magnitude 5.2 (ml/mb) has occurred on Friday, 51 kilometers (32 miles) from Neiafu in Tonga. Exact time and date of earthquake 09/03/18 / 2018-03-09 18:58:48 / March 9, 2018 @ 6:58 pm UTC/GMT. The earthquake occurred at a depth of 81.43 km (51 miles) below the earth’s surface. Id of earthquake: us1000d5b0. Event ids that are associated: us1000d5b0. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The temblor was reported at 06:58:48 / 6:58 am (local time epicenter). Exact location of event, depth 81.43 km, -174.4673° West, -18.6136° South.

Nearest cities/city/towns to hypocenter/epicentrum was Neiafu (min 5000 pop). Epicenter of the event was 51 km (32 miles) from Neiafu (c. 4 300 pop). Nearby country/countries, Tonga (c. 123 000 pop) (That might be effected).

Earthquakes 5.0 to 6.0 may cause light damage to buildings and other structures. There are an estimated 1320 moderate earthquakes in the world each year. In the past 24 hours, there have been three, in the last 10 days five, in the past 30 days five and in the last 365 days thirty-three earthquakes of magnitude 3.0 or greater that has struck near.

Questions or comments?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. 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: 51 km W of Neiafu, Tonga.

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More information

Parameter Value Description
Magnitude 5.2 mb The magnitude for the event.
Longitude -174.4673° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -18.6136° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 81.43 km Depth of the event in kilometers.
Place 51km W 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 2018-03-09 18:58:48 Time when the event occurred. UTC/GMT
Updated 2018-04-07 21:45:14 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 416 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 4.324 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.24 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 96 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 us1000d5b0 Id of event.
Event Code 1000d5b0 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000d5b0, A comma-separated list of event ids that are associated to an event.

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