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Earthquake breaking news, Moderate World Earthquakes Magnitude 5–5.9

Moderate earthquake, 5 mag has occurred near Neiafu in Tonga

Posted by admin on September 21, 2017 0 Comments

Earthquake location -18.3348S, -175.3417WA moderate earthquake magnitude 5 (ml/mb) has struck on Wednesday, 147 km WNW of Neiafu, Tonga (91 miles). Unique identifier: us2000as7z. Ids that are associated to the event: us2000as7z. Exact time and date of earthquake 21/09/17 / 2017-09-21 00:05:20 / September 21, 2017 @ 12:05 am UTC/GMT. The epicenter of the earthquake was roughly 223.14 km (139 miles) below the earth’s surface. Exact location, longitude -175.3417° West, latitude -18.3348° South, depth = 223.14 km. The temblor was picked up at 12:05:20 / 12:05 pm (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

Earthquakes 5.0 to 6.0 may cause light damage to buildings and other structures. There are an estimated 1320 moderate quakes in the world each year. In the past 24 hours, there have been one, in the last 10 days two, in the past 30 days four and in the last 365 days twenty-eight earthquakes of magnitude 3.0 or greater that has struck near.

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. The information in this article comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, detected near: 147 km WNW of Neiafu, Tonga.

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More information

Parameter Value Description
Magnitude 5 mb The magnitude for the event.
Longitude -175.3417° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -18.3348° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 223.14 km Depth of the event in kilometers.
Place 147km WNW of Neiafu, Tonga Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-09-21 00:05:20 Time when the event occurred. UTC/GMT
Updated 2017-09-21 00:23:43 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 385 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 5.184 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.96 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 us2000as7z Id of event.
Event Code 2000as7z An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000as7z, A comma-separated list of event ids that are associated to an event.

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