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Light earthquake: M4 quake has struck near Haveluloto in Tonga

Posted by admin on November 3, 2020 0 Comments

Earthquake location -20.6836S, -178.0091WA light earthquake magnitude 4 (ml/mb) has occurred on Sunday, 295 km W of Haveluloto, Tonga (183 miles). Unique identifier: us6000c8j3. Ids that are associated to the event: us6000c8j3. The epicenter of the earthquake was roughly 507.1 km (315 miles) below the earth’s surface. Exact location of event, depth 507.1 km, -178.0091° West, -20.6836° South. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The temblor was reported at 21:47:32 / 9:47 pm (local time epicenter). Global time and date of event 11/10/20 / 2020-10-11 21:47:32 / October 11, 2020 @ 9:47 pm UTC/GMT.

There are an estimated 13,000 light quakes 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 seven, in the last 10 days eleven, in the past 30 days twenty-one and in the last 365 days one hundred and seventy-seven earthquakes of magnitude 3.0 or greater that have been detected nearby.

Questions or comments?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home and country. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 295 km W of Haveluloto, 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 -178.0091° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -20.6836° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 507.1 km Depth of the event in kilometers.
Place 295 km W 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 2020-10-11 21:47:32 Time when the event occurred. UTC/GMT
Updated 2020-11-03 05:44:37 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 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 4.731 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.64 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 164 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 us6000c8j3 Id of event.
Event Code 6000c8j3 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000c8j3, A comma-separated list of event ids that are associated to an event.

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