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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.1 mag was detected near Hihifo in Tonga


Earthquake location -16.2138S, -174.0059WA light earthquake with magnitude 4.1 (ml/mb) was reported 36 kilometers (22 miles) from Hihifo in Tonga on Wednesday. Exact time and date of earthquake 02/12/20 / 2020-12-02 02:22:46 / December 2, 2020 @ 2:22 am UTC/GMT. All ids that are associated to the event: us7000cn29. Unique identifier: us7000cn29. The temblor was picked up at 02:22:46 / 2:22 am (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The earthquake occurred at a depth of 84.82 km (53 miles) below the earth’s surface. Exact location of earthquake, -174.0059° West, -16.2138° South, depth 84.82 km.

Country/countries that might be effected, Tonga (c. 123 000 pop). Epicenter of the earthquake was 37 km (23 miles) from Hihifo (c. 800 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Hihifo.

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. There are an estimated 13,000 light earthquakes in the world each year. In the past 24 hours, there have been one, in the last 10 days two, in the past 30 days ten and in the last 365 days seventy-five earthquakes of magnitude 3.0 or greater that has occurred nearby.

Did you feel the quake?

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. This data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 36 km SW of Hihifo, Tonga.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude -174.0059° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -16.2138° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 84.82 km Depth of the event in kilometers.
Place 36 km SW 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 2020-12-02 02:22:46 Time when the event occurred. UTC/GMT
Updated 2020-12-11 04:48:28 Time when the event was most recently updated. UTC/GMT
Timezone offset 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 259 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 3.14 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.53 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 us7000cn29 Id of event.
Event Code 7000cn29 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us7000cn29, A comma-separated list of event ids that are associated to an event.

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