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Light World Earthquakes Magnitude 4-4.9

Light earthquake 4 mag, 273 km NNE of Ndoi Island, Fiji


Earthquake location -18.2681S, -177.9915WA light earthquake with magnitude 4 (ml/mb) was detected on Monday, 273 km NNE of Ndoi Island, Fiji (170 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact time and date of earthquake 31/12/18 / 2018-12-31 22:27:01 / December 31, 2018 @ 10:27 pm UTC/GMT. Unique identifier: us2000j5np. Ids that are associated to the event: us2000j5np. The epicenter was at a depth of 568.92 km (354 miles). Exact location of event, longitude -177.9915 West, latitude -18.2681 South, depth = 568.92 km. The 4-magnitude earthquake was detected at 10:27:01 / 10:27 am (local time epicenter).

In the past 24 hours, there have been six, in the last 10 days sixteen, in the past 30 days twenty-nine and in the last 365 days four hundred and eighty-three earthquakes of magnitude 3.0 or greater that was reported nearby. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. There are an estimated 13,000 light quakes in the world each year.

Did you feel it?

How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking and damage 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: 273 km NNE of Ndoi Island, Fiji. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude -177.9915° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -18.2681° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 568.92 km Depth of the event in kilometers.
Place 273km NNE of Ndoi Island, Fiji Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-12-31 22:27:01 Time when the event occurred. UTC/GMT
Updated 2019-01-23 04:38:46 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 246 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 3.8 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.79 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 99 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 us2000j5np Id of event.
Event Code 2000j5np An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000j5np, A comma-separated list of event ids that are associated to an event.

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