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Moderate earthquake 5.4 mag, 179 km SSE of `Ohonua, Tonga

Posted by admin on June 21, 2018 0 Comments

Earthquake location -22.8997S, -174.5118WA moderate earthquake magnitude 5.4 (ml/mb) has occurred on Thursday, 179 km SSE of `Ohonua, Tonga (111 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The 5.4-magnitude earthquake has occurred at 07:33:07 / 7:33 am (local time epicenter). Date and time of earthquake in UTC/GMT: 21/06/18 / 2018-06-21 19:33:07 / June 21, 2018 @ 7:33 pm. Exact location of earthquake, -174.5118° West, -22.8997° South, depth 10 km. Event ids that are associated to the earthquake: us1000exy4. Id of event: us1000exy4. The earthquake occurred at a depth of 10 km (6 miles) below the earth’s surface.

In the past 24 hours, there have been two, in the last 10 days two, in the past 30 days three and in the last 365 days twenty earthquakes of magnitude 3.0 or greater that was reported nearby. Earthquakes 5.0 to 6.0 may cause light damage to buildings and other structures. Each year there are an estimated 1320 moderate earthquakes in the world.

How would you describe the shaking?

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: 179 km SSE of `Ohonua, Tonga.

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More information

Parameter Value Description
Magnitude 5.4 mb The magnitude for the event.
Longitude -174.5118° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -22.8997° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 179km SSE of `Ohonua, Tonga Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-06-21 19:33:07 Time when the event occurred. UTC/GMT
Updated 2018-06-21 19:50:05 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 449 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 5.728 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.95 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 63 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 us1000exy4 Id of event.
Event Code 1000exy4 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000exy4, A comma-separated list of event ids that are associated to an event.

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