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Light World Earthquakes Magnitude 4-4.9

Light earthquake 4.8 mag, 161 km SW of Hihifo, Tonga



Earthquake location -17.0355S, -174.767WA light earthquake magnitude 4.8 (mg/mb) was reported Monday, 161 kilometers (100 miles) from Hihifo in Tonga. The temblor was reported at 08:14:38 / 8:14 pm (local time epicenter) at a depth of 100.17 km (62 miles). Global time of event 2015-01-20 08:14:38 UTC/GMT. A tsunami warning has not been issued, according to the U.S. Geological Survey. Exact location of event, longitude -174.767 West, latitude -17.0355 South, depth 100.17 km.

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Leave a comment or report about shaking, activity and damage at your home, city and country. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded in: 161 km SW of Hihifo, Tonga.



More information

Parameter Value Description
Magnitude 4.8 mb The magnitude for the event.
Longitude -174.767° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -17.0355° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 100.17 km Depth of the event in kilometers.
Place 161km SW 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 2015-01-20 08:14:38 Time when the event occurred. UTC/GMT
Updated 2015-01-20 10:07:51 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 354 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 22.314 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.71 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 80 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 usc000thee Id of event.
Event Code c000thee An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS usc000thee A comma-separated list of event ids that are associated to an event.

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