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Earthquake breaking news, Moderate World Earthquakes Magnitude 5–5.9

Moderate earthquake, 5.1 mag has occurred near Hihifo in Tonga

Posted by admin on August 21, 2018 0 Comments

Earthquake location -14.9376S, -173.3342WA moderate earthquake magnitude 5.1 (ml/mb) has occurred on Monday, 120 km NNE of Hihifo, Tonga (75 miles). 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: 21/08/18 / 2018-08-21 06:24:18 / August 21, 2018 @ 6:24 am. Event ids that are associated to the earthquake: us1000gef4. Id of event: us1000gef4. Exact location, longitude -173.3342° West, latitude -14.9376° South, depth = 20.18 km. The earthquake was roughly at a depth of 20.18 km (13 miles). The 5.1-magnitude earthquake has occurred at 18:24:18 / 6:24 pm (local time epicenter).

In the past 24 hours, there have been one, in the last 10 days two, in the past 30 days three and in the last 365 days sixty-six earthquakes of magnitude 3.0 or greater that has occurred nearby. 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.

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. 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: 120 km NNE of Hihifo, Tonga.

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More information

Parameter Value Description
Magnitude 5.1 mb The magnitude for the event.
Longitude -173.3342° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -14.9376° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 20.18 km Depth of the event in kilometers.
Place 120km NNE of Hihifo, Tonga Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-08-21 06:24:18 Time when the event occurred. UTC/GMT
Updated 2018-08-21 06:44:34 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 400 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 1.822 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.49 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 60 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 us1000gef4 Id of event.
Event Code 1000gef4 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000gef4, A comma-separated list of event ids that are associated to an event.

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