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Strong earthquake, 6.5 mag strikes near Hihifo in Tonga

Earthquake location -15.5S, -173WA earthquake magnitude 6.5 (ml/mb) has occurred on Saturday, 99 kilometers (62 miles) from Hihifo in Tonga. A tsunami warning has been issued near Hihifo in Tonga (Does not indicate if a tsunami actually did or will exist). The epicenter of the earthquake was roughly 33 km (21 miles) below the earth’s surface. Global time and date of event 18/07/20 / 2020-07-18 15:32:43 / July 18, 2020 @ 3:32 pm UTC/GMT. Exact location, longitude -173° West, latitude -15.5° South, depth = 33 km. The temblor was detected at 15:32:43 / 3:32 pm (local time epicenter). Id of earthquake: at00qdo8ij. Event ids that are associated: pt20200001, at00qdo8ij.

The epicenter was 99 km (62 miles) from Hihifo (c. 800 pop). Closest city/cities/towns to epicentrum/hypocenter was Hihifo (min 5000 pop). Nearby country/countries, Tonga (c. 123 000 pop) (That might be effected).

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 seventy-four earthquakes of magnitude 3.0 or greater that has occurred nearby. Earthquakes 6.0 to 6.9 may cause a lot of damage in very populated areas. Each 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. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 99 km ENE of Hihifo, Tonga. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 6.5 mb The magnitude for the event.
Longitude -173° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -15.5° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 33 km Depth of the event in kilometers.
Place 99 km ENE 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 2020-07-18 15:32:43 Time when the event occurred. UTC/GMT
Updated 2020-07-18 15:45:20 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 1 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 650 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network at The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,pt,at, A comma-separated list of network contributors.
Number of Stations Used 39 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 8.951712 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.18 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 71.99999424 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type Mi The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID at00qdo8ij Id of event.
Event Code 00qdo8ij An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,pt20200001,at00qdo8ij, A comma-separated list of event ids that are associated to an event.

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