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Light earthquake: M4.1 quake has struck near Haveluloto in Tonga

Posted by admin on September 8, 2020 0 Comments

Earthquake location -20.6263S, -177.6968WA light earthquake magnitude 4.1 (ml/mb) has struck on Friday, 264 km WNW of Haveluloto, Tonga (164 miles). The earthquake occurred at a depth of 495.22 km (308 miles) below the earth’s surface. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of event, longitude -177.6968 West, latitude -20.6263 South, depth = 495.22 km. The temblor was reported at 21:19:20 / 9:19 pm (local time epicenter). Unique identifier: us7000bdrx. Ids that are associated to the event: us7000bdrx. Global time and date of event 21/08/20 / 2020-08-21 21:19:20 / August 21, 2020 @ 9:19 pm UTC/GMT.

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. In the past 24 hours, there have been five, in the last 10 days nine, in the past 30 days twenty-two and in the last 365 days one hundred and sixty-four earthquakes of magnitude 3.0 or greater that has occurred nearby.

Did you feel anything?

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: 264 km WNW of Haveluloto, Tonga.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude -177.6968° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -20.6263° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 495.22 km Depth of the event in kilometers.
Place 264 km WNW of Haveluloto, Tonga Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2020-08-21 21:19:20 Time when the event occurred. UTC/GMT
Updated 2020-08-28 03:40:34 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 259 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 4.934 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.82 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 123 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 us7000bdrx Id of event.
Event Code 7000bdrx An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us7000bdrx, A comma-separated list of event ids that are associated to an event.

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