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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.1 mag was detected near Haveluloto in Tonga

Posted by admin on October 23, 2020 0 Comments

Earthquake location -22.3862S, -176.9087WA light earthquake with magnitude 4.1 (ml/mb) was detected on Sunday, 222 km SW of Haveluloto, Tonga (138 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of event, longitude -176.9087 West, latitude -22.3862 South, depth = 164.64 km. All ids that are associated to the event: us6000c6tl. Unique identifier: us6000c6tl. The earthquake occurred at a depth of 164.64 km (102 miles). The 4.1-magnitude earthquake was detected at 22:49:15 / 10:49 pm (local time epicenter). Exact time and date of earthquake 04/10/20 / 2020-10-04 22:49:15 / October 4, 2020 @ 10:49 pm UTC/GMT.

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. In the past 24 hours, there have been three, in the last 10 days four, in the past 30 days five and in the last 365 days twenty-eight earthquakes of magnitude 3.0 or greater that have been detected in the same area.

How would you describe the shaking?

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: 222 km SW of Haveluloto, Tonga. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude -176.9087° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -22.3862° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 164.64 km Depth of the event in kilometers.
Place 222 km SW 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 2020-10-04 22:49:15 Time when the event occurred. UTC/GMT
Updated 2020-10-23 02:32:23 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 6.613 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.7 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 153 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 us6000c6tl Id of event.
Event Code 6000c6tl An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000c6tl, A comma-separated list of event ids that are associated to an event.

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