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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.5 mag strikes near Macquarie Island


Earthquake location -53.4954S, 140.3406WA light earthquake magnitude 4.5 (ml/mb) has occurred on Saturday, West of Macquarie Island (0 miles). Exact location of event, longitude 140.3406 East, latitude -53.4954 South, depth = 10 km. Global date and time of event UTC/GMT: 21/12/18 / 2018-12-21 17:51:07 / December 21, 2018 @ 5:51 pm. Id of earthquake: us2000j214. Event ids that are associated: us2000j214. The epicenter of the earthquake was roughly 10 km (6 miles) below the earth’s surface. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The 4.5-magnitude earthquake was detected at 02:51:07 / 2:51 am (local time epicenter).

Each year there are an estimated 13,000 light quakes in the world. In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days one and in the last 365 days two earthquakes of magnitude 3.0 or greater that has occurred nearby. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

Questions or comments?

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: West of Macquarie Island.

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More information

Parameter Value Description
Magnitude 4.5 mb The magnitude for the event.
Longitude 140.3406° East Decimal degrees longitude. Negative values for western longitudes.
Latitude -53.4954° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place West of Macquarie Island Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-12-21 17:51:07 Time when the event occurred. UTC/GMT
Updated 2019-01-12 21:36:36 Time when the event was most recently updated. UTC/GMT
Timezone offset 540 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 312 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 21.626 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 89 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 us2000j214 Id of event.
Event Code 2000j214 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000j214, A comma-separated list of event ids that are associated to an event.

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