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Earthquake breaking news, Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.6 mag was detected near Kolonga in Tonga


Earthquake location -20.5614S, -174.5779WA light earthquake magnitude 4.6 (ml/mb) has struck on Saturday, 81 kilometers (50 miles) from Kolonga in Tonga. Exact location, longitude -174.5779° West, latitude -20.5614° South, depth = 30.89 km. The earthquake occurred at a depth of 30.89 km (19 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The 4.6-magnitude earthquake was detected at 19:38:39 / 7:38 pm (local time epicenter). Global date and time of event UTC/GMT: 23/01/21 / 2021-01-23 19:38:39 / January 23, 2021 @ 7:38 pm. Event id: us7000d2qq. Ids that are associated to the earthquake: us7000d2qq.

Country/countries that might be effected, Tonga (c. 123 000 pop). Closest city/cities/towns to epicentrum/hypocenter was ‘Ohonua, Nuku‘alofa, Pangai (min 5000 pop). The epicenter was 91 km (57 miles) from Nuku‘alofa (c. 22 400 pop), 86 km (54 miles) from Pangai (c. 1 700 pop), 94 km (58 miles) from ‘Ohonua (c. 1 200 pop).

In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days one and in the last 365 days sixteen 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. Every year there are an estimated 13,000 light earthquakes in the world.

Did you feel the quake?

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: 81 km NE of Kolonga, Tonga. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.6 mb The magnitude for the event.
Longitude -174.5779° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -20.5614° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 30.89 km Depth of the event in kilometers.
Place 81 km NE of Kolonga, Tonga Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2021-01-23 19:38:39 Time when the event occurred. UTC/GMT
Updated 2021-01-23 23:28:31 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 326 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 4.62 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.55 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 100 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 us7000d2qq Id of event.
Event Code 7000d2qq An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us7000d2qq, A comma-separated list of event ids that are associated to an event.

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