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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.8 mag has occurred near Hihifo in Tonga



Earthquake location -15.7693S, -173.2489WA light earthquake magnitude 4.8 (ml/mb) has occurred on Sunday, 57 kilometers (35 miles) from Hihifo in Tonga. Exact location of event, longitude -173.2489 West, latitude -15.7693 South, depth = 10 km. Exact time and date of earthquake 27/12/15 / 2015-12-27 16:59:31 / December 27, 2015 @ 4:59 pm UTC/GMT. The earthquake occurred at a depth of 10 km (6 miles) below the earth’s surface. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Id of earthquake: us10004biu. Event ids that are associated: us10004biu. The 4.8-magnitude earthquake has occurred at 04:59:31 / 4:59 am (local time epicenter).

Country/countries that might be effected, Tonga (c. 123 000 pop). Nearest cities/city/villages to epicentrum/hypocenter was Hihifo (min 5000 pop). Epicenter of the event was 62 km (39 miles) from Hihifo (c. 800 pop).

In the past 24 hours, there have been five, in the last 10 days seven, in the past 30 days eleven and in the last 365 days seventy-four earthquakes of magnitude 3.0 or greater that have been detected nearby. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. Each year there are an estimated 13,000 light quakes in the world.

Questions or comments?

How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking and damage at your home, city and country. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 57 km ENE of Hihifo, Tonga. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.8 mb The magnitude for the event.
Longitude -173.2489° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -15.7693° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 57km ENE 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 2015-12-27 16:59:31 Time when the event occurred. UTC/GMT
Updated 2016-01-24 20:51:54 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 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 2.333 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.05 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 94 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 us10004biu Id of event.
Event Code 10004biu An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us10004biu, A comma-separated list of event ids that are associated to an event.

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