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World Magnitude 2.5+ Earthquakes

Earthquake 4.7 mb, 106 km WSW of Hihifo, Tonga

Earthquake location -16.2643S, -174.692WAn earthquake with magnitude 4.7 mg has occurred in 106 km WSW of Hihifo, Tonga. Time of event: Friday 23rd May @ 8:25 pm UTC. Location of event: -174.692S, -16.2643W, depth=182.48 km. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about quake recorded in: 106 km WSW of Hihifo, Tonga. Did you feel it? Leave a comment or report about shaking, activity and damage at your home, city and country.

More information

Parameter Value Description
Magnitude 4.7 mb The magnitude for the event.
Longitude -174.692° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -16.2643° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 182.48 km Depth of the event in kilometers.
Place 106km WSW 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 2014-05-23 20:25:53 Time when the event occurred. UTC/GMT
Updated 2014-05-23 20:48:18 Time when the event was most recently updated. UTC/GMT
Timezone offset -720 Timezone offset from UTC in minutes at the event epicenter.
Felt 0 The total number of felt reports
CDI 1 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 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 340 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 3.661 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.22 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 51 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 usb000r1wm Id of event.
Event Code b000r1wm An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS usb000r1wm A comma-separated list of event ids that are associated to an event.

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