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Light World Earthquakes Magnitude 4-4.9

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

Posted by admin on August 2, 2024 0 Comments

Earthquake location -18.3342S, -174.5613WA light earthquake magnitude 4.5 (ml/mb) strikes 70 kilometers (43 miles) from Neiafu in Tonga on Sunday. 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 10 km (6 miles) below the earth’s surface. Unique identifier: us6000nhle. Ids that are associated to the event: us6000nhle. Exact location of event, depth 10 km, -174.5613° West, -18.3342° South. The 4.5-magnitude earthquake was detected at 19:32:58 / 7:32 pm (local time epicenter). Global time and date of event 21/07/24 / 2024-07-21 19:32:58 / July 21, 2024 @ 7:32 pm UTC/GMT.

Nearest cities/city/towns to hypocenter/epicentrum was Neiafu (min 5000 pop). Close country/countries, Tonga (c. 123 000 pop) (That might be effected). Epicenter of the earthquake was 70 km (44 miles) from Neiafu (c. 4 300 pop).

In the past 24 hours, there have been two, in the last 10 days three, in the past 30 days three and in the last 365 days ten 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. There are an estimated 13,000 light quakes in the world each year.

How would you describe the shaking?

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. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 70 km WNW of Neiafu, Tonga. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.5 mb The magnitude for the event.
Longitude -174.5613° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -18.3342° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 70 km WNW of Neiafu, Tonga Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2024-07-21 19:32:58 Time when the event occurred. UTC/GMT
Updated 2024-08-02 17:11:14 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 33 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 3.05 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.54 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 121 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 us6000nhle Id of event.
Event Code 6000nhle An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000nhle, A comma-separated list of event ids that are associated to an event.

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