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Light World Earthquakes Magnitude 4-4.9

Light earthquake 4.4 mag, 87 km SE of Hihifo, Tonga

Posted by admin on September 18, 2020 0 Comments

Earthquake location -16.5812S, -173.2905WA light earthquake magnitude 4.4 (ml/mb) strikes 87 kilometers (54 miles) from Hihifo in Tonga on Saturday. The epicenter was at a depth of 78.6 km (49 miles). Exact time and date of earthquake 12/09/20 / 2020-09-12 04:35:06 / September 12, 2020 @ 4:35 am UTC/GMT. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Id of earthquake: us7000bpd2. Event ids that are associated: us7000bpd2. The temblor was reported at 04:35:06 / 4:35 am (local time epicenter). Exact location of event, depth 78.6 km, -173.2905° West, -16.5812° South.

Country/countries that might be effected, Tonga (c. 123 000 pop). Epicenter of the earthquake was 88 km (55 miles) from Hihifo (c. 800 pop). Nearest cities/city/towns to hypocenter/epicentrum was Hihifo (min 5000 pop).

In the past 24 hours, there have been one, in the last 10 days two, in the past 30 days eight and in the last 365 days fourty-seven earthquakes of magnitude 3.0 or greater that has occurred nearby. Each year there are an estimated 13,000 light quakes in the world. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

Questions or comments?

How did you react? Was there any damage to buildings? Leave a comment or report about shaking, activity and damage at your home, city and country. 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: 87 km SE of Hihifo, Tonga.

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More information

Parameter Value Description
Magnitude 4.4 mb The magnitude for the event.
Longitude -173.2905° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -16.5812° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 78.6 km Depth of the event in kilometers.
Place 87 km SE of Hihifo, Tonga Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2020-09-12 04:35:06 Time when the event occurred. UTC/GMT
Updated 2020-09-17 23:59:11 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 298 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 3.029 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.26 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 57 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 us7000bpd2 Id of event.
Event Code 7000bpd2 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us7000bpd2, A comma-separated list of event ids that are associated to an event.

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