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Light World Earthquakes Magnitude 4-4.9

Earthquake: M 4.8 quake strikes near Hihifo in Tonga

Posted by admin on December 18, 2014 0 Comments

Earthquake location -15.8623S, -172.3516WA light earthquake magnitude 4.8 (mg/mb) was reported Thursday, 150 kilometers (93 miles) from Hihifo in Tonga. The temblor was reported at 02:52:36 / 2:52 am (local time epicenter) at a depth of 36.35 km (23 miles). Global time of event 2014-12-18 01:52:36 UTC/GMT. A tsunami warning has not been issued, according to the U.S. Geological Survey. Exact location of event, longitude -172.3516 West, latitude -15.8623 South, depth 36.35 km.

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Leave a comment or report about shaking, activity and damage at your home, city and country. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded in: 150 km E of Hihifo, Tonga.


More information

Parameter Value Description
Magnitude 4.8 mb The magnitude for the event.
Longitude -172.3516° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -15.8623° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 36.35 km Depth of the event in kilometers.
Place 150km E 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 2014-12-18 13:52:36 Time when the event occurred. UTC/GMT
Updated 2014-12-18 18:44:36 Time when the event was most recently updated. UTC/GMT
Timezone offset -660 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 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 354 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 3.945 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.22 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 113 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 usc000t7w9 Id of event.
Event Code c000t7w9 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS usc000t7w9 A comma-separated list of event ids that are associated to an event.

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