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Light earthquake: M4.5 quake has struck near Haveluloto in Tonga

Posted by admin on January 5, 2021 0 Comments

Earthquake location -19.808S, -177.3562WA light earthquake magnitude 4.5 (ml/mb) strikes 268 km NW of Haveluloto, Tonga (167 miles) on Wednesday. The earthquake was roughly at a depth of 550.97 km (342 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact time and date of earthquake 23/12/20 / 2020-12-23 01:21:20 / December 23, 2020 @ 1:21 am UTC/GMT. All ids that are associated to the event: us6000d5rq. Unique identifier: us6000d5rq. Exact location of event, depth 550.97 km, -177.3562° West, -19.808° South. The temblor was reported at 01:21:20 / 1:21 am (local time epicenter).

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. In the past 24 hours, there have been three, in the last 10 days six, in the past 30 days ten and in the last 365 days one hundred and twenty earthquakes of magnitude 3.0 or greater that has struck near. There are an estimated 13,000 light quakes in the world each year.

How would you describe the shaking?

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. 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: 268 km NW of Haveluloto, Tonga.

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More information

Parameter Value Description
Magnitude 4.5 mb The magnitude for the event.
Longitude -177.3562° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -19.808° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 550.97 km Depth of the event in kilometers.
Place 268 km NW of Haveluloto, Tonga Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2020-12-23 01:21:20 Time when the event occurred. UTC/GMT
Updated 2021-01-05 23:18:26 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 312 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 4.809 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 87 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 us6000d5rq Id of event.
Event Code 6000d5rq An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000d5rq, A comma-separated list of event ids that are associated to an event.

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