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Light earthquake 4.5 mag, 45 km WSW of Neiafu, Tonga

Posted by admin on August 15, 2020 0 Comments

Earthquake location -18.734S, -174.4037WA light earthquake magnitude 4.5 (ml/mb) has struck on Friday, 45 kilometers (28 miles) from Neiafu in Tonga. The earthquake was roughly at a depth of 81.88 km (51 miles). Exact location of earthquake, longitude -174.4037 West, latitude -18.734 South, depth = 81.88 km. The temblor was reported at 22:56:02 / 10:56 pm (local time epicenter). Exact time and date of event in UTC/GMT: 14/08/20 / 2020-08-14 22:56:02 / August 14, 2020 @ 10:56 pm. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). All ids that are associated to the event: us6000bf2p. Unique identifier: us6000bf2p.

Event epicenter was 45 km (28 miles) from Neiafu (c. 4 300 pop). Close country/countries that might be effected, Tonga (c. 123 000 pop). Nearest cities/city/towns to hypocenter/epicentrum was Neiafu (min 5000 pop).

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. In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days two and in the last 365 days thirty-one earthquakes of magnitude 3.0 or greater that have been detected in the same area.

Questions or comments?

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. 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: 45 km WSW of Neiafu, Tonga.

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More information

Parameter Value Description
Magnitude 4.5 mb The magnitude for the event.
Longitude -174.4037° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -18.734° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 81.88 km Depth of the event in kilometers.
Place 45 km WSW 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 2020-08-14 22:56:02 Time when the event occurred. UTC/GMT
Updated 2020-08-15 04:35:09 Time when the event was most recently updated. UTC/GMT
Timezone offset Timezone offset from UTC in minutes at the event epicenter.
Felt 1 The total number of felt reports
CDI 2 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 4.251 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.91 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 85 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 us6000bf2p Id of event.
Event Code 6000bf2p An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000bf2p, A comma-separated list of event ids that are associated to an event.

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