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Light earthquake: M4 quake has struck near Hihifo in Tonga

Posted by admin on May 29, 2024 0 Comments

Earthquake location -15.9323S, -174.2775WA light earthquake magnitude 4 (ml/mb) has struck on Tuesday, 51 kilometers (32 miles) from Hihifo in Tonga. The earthquake occurred at a depth of 224.043 km (139 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Event ids that are associated to the earthquake: us7000mnii. Id of event: us7000mnii. Exact time and date of earthquake 21/05/24 / 2024-05-21 04:30:43 / May 21, 2024 @ 4:30 am UTC/GMT. The 4-magnitude earthquake has occurred at 04:30:43 / 4:30 am (local time epicenter). Exact location of event, depth 224.043 km, -174.2775° West, -15.9323° South.

Earthquake epicenter was 52 km (32 miles) from Hihifo (c. 800 pop). Nearest cities/city/villages to epicentrum/hypocenter was Hihifo (min 5000 pop). Nearby country/countries, Tonga (c. 123 000 pop) (That might be effected).

In the past 24 hours, there have been two, in the last 10 days two, in the past 30 days six and in the last 365 days six earthquakes of magnitude 3.0 or greater that was reported 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 react? Was there any damage to buildings? Leave a comment or report about shaking, activity 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: 51 km W of Hihifo, Tonga. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude -174.2775° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -15.9323° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 224.043 km Depth of the event in kilometers.
Place 51 km W 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 2024-05-21 04:30:43 Time when the event occurred. UTC/GMT
Updated 2024-05-29 02:00:24 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 246 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 13 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 3.141 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 90 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 us7000mnii Id of event.
Event Code 7000mnii An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us7000mnii, A comma-separated list of event ids that are associated to an event.

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