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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.8 mag was detected near Hihifo in Tonga

Earthquake location -15.1409S, -174.0017WA light earthquake with magnitude 4.8 (ml/mb) was reported 93 kilometers (58 miles) from Hihifo in Tonga on Thursday. Date and time of earthquake in UTC/GMT: 12/12/19 / 2019-12-12 18:59:41 / December 12, 2019 @ 6:59 pm. The 4.8-magnitude earthquake was detected at 06:59:41 / 6:59 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 98.53 km (61 miles) below the earth’s surface. Unique identifier: us70006nqn. Ids that are associated to the event: us70006nqn. Exact location, longitude -174.0017° West, latitude -15.1409° South, depth = 98.53 km.

Event epicenter was 93 km (58 miles) from Hihifo (c. 800 pop). Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Hihifo. Country/countries that might be effected, Tonga (c. 123 000 pop).

In the past 24 hours, there have been two, in the last 10 days six, in the past 30 days eight and in the last 365 days fifty-eight earthquakes of magnitude 3.0 or greater that have been detected in the same area. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. Every year there are an estimated 13,000 light earthquakes in the world.

Did you feel it?

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. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 93 km NNW of Hihifo, Tonga.

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More information

Parameter Value Description
Magnitude 4.8 mb The magnitude for the event.
Longitude -174.0017° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -15.1409° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 98.53 km Depth of the event in kilometers.
Place 93km NNW 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 2019-12-12 18:59:41 Time when the event occurred. UTC/GMT
Updated 2019-12-26 23:47:56 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 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 2.477 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.67 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 75 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 us70006nqn Id of event.
Event Code 70006nqn An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us70006nqn, A comma-separated list of event ids that are associated to an event.

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