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Moderate earthquake, 5 mag was detected near Hihifo in Tonga

Posted by admin on November 20, 2018 0 Comments

Earthquake location -15.2708S, -173.4087WA moderate earthquake magnitude 5 (ml/mb) has struck on Monday, 83 kilometers (52 miles) from Hihifo in Tonga. Event ids that are associated to the earthquake: us1000hu88. Id of event: us1000hu88. Exact location of event, longitude -173.4087 West, latitude -15.2708 South, depth = 35 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact time and date of earthquake 20/11/18 / 2018-11-20 00:46:31 / November 20, 2018 @ 12:46 am UTC/GMT. The earthquake occurred at a depth of 35 km (22 miles) below the earth’s surface. The temblor was reported at 12:46:31 / 12:46 pm (local time epicenter).

Epicenter of the event was 87 km (54 miles) from Hihifo (c. 800 pop). Nearby country/countries, Tonga (c. 123 000 pop) (That might be effected). Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Hihifo.

There are an estimated 1320 moderate quakes in the world each year. Earthquakes 5.0 to 6.0 may cause light damage to buildings and other structures. In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days six and in the last 365 days fifty-eight earthquakes of magnitude 3.0 or greater that have been detected nearby.

Did you feel anything?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home and country. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 83 km NNE of Hihifo, Tonga. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 5 mb The magnitude for the event.
Longitude -173.4087° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -15.2708° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 35 km Depth of the event in kilometers.
Place 83km 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 2018-11-20 00:46:31 Time when the event occurred. UTC/GMT
Updated 2018-11-20 02:05:11 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 385 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 4.657 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.81 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 63 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 us1000hu88 Id of event.
Event Code 1000hu88 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000hu88, A comma-separated list of event ids that are associated to an event.

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