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Moderate earthquake: M5 quake has struck near `Ohonua in Tonga

Posted by admin on March 4, 2018 0 Comments

Earthquake location -22.8871S, -174.4432WA moderate earthquake magnitude 5 (ml/mb) has occurred on Sunday, 179 km SSE of `Ohonua, Tonga (111 miles). The epicenter was at a depth of 10 km (6 miles). Exact location of event, longitude -174.4432 West, latitude -22.8871 South, depth = 10 km. Event id: us2000dc1w. Ids that are associated to the earthquake: us2000dc1w. Global date and time of event UTC/GMT: 04/03/18 / 2018-03-04 13:45:04 / March 4, 2018 @ 1:45 pm. The 5-magnitude earthquake has occurred at 01:45:04 / 1:45 am (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

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

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. 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: 179 km SSE of `Ohonua, Tonga.

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More information

Parameter Value Description
Magnitude 5 mb The magnitude for the event.
Longitude -174.4432° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -22.8871° 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 2018-03-04 13:45:04 Time when the event occurred. UTC/GMT
Updated 2018-03-04 14:12:06 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 5.672 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.04 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 100 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 us2000dc1w Id of event.
Event Code 2000dc1w An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000dc1w, A comma-separated list of event ids that are associated to an event.

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