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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.8 mag was detected near Vaini in Tonga


Earthquake location -21.39S, -175.2422WA light earthquake magnitude 4.8 (ml/mb) has occurred on Sunday, 22 kilometers (14 miles) from Vaini in Tonga. Exact time and date of earthquake 18/08/24 / 2024-08-18 09:59:51 / August 18, 2024 @ 9:59 am UTC/GMT. 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 68.658 km (43 miles). Id of earthquake: us7000nd3y. Event ids that are associated: us7000nd3y. Exact location of event, longitude -175.2422 West, latitude -21.39 South, depth = 68.658 km. The temblor was picked up at 09:59:51 / 9:59 am (local time epicenter).

Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was ‘Ohonua, Nuku‘alofa. Epicenter of the earthquake was 28 km (18 miles) from Nuku‘alofa (c. 22 400 pop), 31 km (19 miles) from ‘Ohonua (c. 1 200 pop). Nearby 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 three, in the past 30 days three and in the last 365 days seven earthquakes of magnitude 3.0 or greater that have been detected nearby. There are an estimated 13,000 light earthquakes in the world each year. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

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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. The information in this article comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, detected near: 22 km SSW of Vaini, Tonga.

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More information

Parameter Value Description
Magnitude 4.8 mb The magnitude for the event.
Longitude -175.2422° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -21.39° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 68.658 km Depth of the event in kilometers.
Place 22 km SSW of Vaini, Tonga Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2024-08-18 09:59:51 Time when the event occurred. UTC/GMT
Updated 2024-09-13 08:30:58 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 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 26 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.222 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.01 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 93 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 us7000nd3y Id of event.
Event Code 7000nd3y An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us7000nd3y, A comma-separated list of event ids that are associated to an event.

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