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Light earthquake, 4.5 mag was detected near Nuku`alofa in Tonga

Posted by admin on May 17, 2019 0 Comments

Earthquake location -20.5289S, -175.7885WA light earthquake magnitude 4.5 (ml/mb) has occurred on Thursday, 90 kilometers (56 miles) from Nuku`alofa in Tonga. Exact time and date of earthquake 17/05/19 / 2019-05-17 09:09:30 / May 17, 2019 @ 9:09 am UTC/GMT. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The temblor was detected at 21:09:30 / 9:09 pm (local time epicenter). Exact location, longitude -175.7885° West, latitude -20.5289° South, depth = 162.45 km. Unique identifier: us70003mgt. Ids that are associated to the event: us70003mgt. The earthquake occurred at a depth of 162.45 km (101 miles).

Closest city/cities/towns to epicentrum/hypocenter was Nuku‘alofa (min 5000 pop). Earthquake epicenter was 91 km (57 miles) from Nuku‘alofa (c. 22 400 pop). Nearby country/countries, Tonga (c. 123 000 pop) (That might be effected).

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

Did you feel anything?

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. 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: 90 km NW of Nuku`alofa, Tonga.

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More information

Parameter Value Description
Magnitude 4.5 mb The magnitude for the event.
Longitude -175.7885° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -20.5289° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 162.45 km Depth of the event in kilometers.
Place 90km NW of Nuku`alofa, Tonga Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2019-05-17 09:09:30 Time when the event occurred. UTC/GMT
Updated 2019-05-17 10:10:54 Time when the event was most recently updated. UTC/GMT
Timezone offset -720 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 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 5.704 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.27 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 96 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 us70003mgt Id of event.
Event Code 70003mgt An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us70003mgt, A comma-separated list of event ids that are associated to an event.

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