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Earthquake breaking news, Strong World Earthquakes Magnitude 6–6.9

Strong earthquake 6 mag, 100 km SSE of Pangai, Tonga


Earthquake location -20.5981S, -173.8949WA earthquake with magnitude 6 (ml/mb) was reported 100 kilometers (62 miles) from Pangai in Tonga on Wednesday. Exact time and date of earthquake 18/10/17 / 2017-10-18 12:00:59 / October 18, 2017 @ 12:00 pm UTC/GMT. Event id: us1000atnb. Ids that are associated to the earthquake: us1000atnb. The 6-magnitude earthquake has occurred at 00:00:59 / 12:00 am (local time epicenter). Exact location of earthquake, longitude -173.8949 West, latitude -20.5981 South, depth = 10 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The epicenter was at a depth of 10 km (6 miles).

Country/countries that might be effected, Tonga (c. 123 000 pop). Epicenter of the event was 99 km (62 miles) from Pangai (c. 1 700 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Pangai.

Earthquakes 6.0 to 6.9 may cause a lot of damage in very populated areas. In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days two and in the last 365 days thirty-four earthquakes of magnitude 3.0 or greater that was reported nearby. Every year there are an estimated 135 earthquakes in the world.

How would you describe the shaking?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity 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: 100 km SSE of Pangai, Tonga.

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More information

Parameter Value Description
Magnitude 6 mb The magnitude for the event.
Longitude -173.8949° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -20.5981° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 100km SSE of Pangai, Tonga Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-10-18 12:00:59 Time when the event occurred. UTC/GMT
Updated 2017-10-18 12:26:56 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 3.75 The maximum estimated instrumental intensity for the event.
Alert Level green 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 554 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 6.952 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.29 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 31 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mww The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us1000atnb Id of event.
Event Code 1000atnb An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000atnb, A comma-separated list of event ids that are associated to an event.

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