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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.2 mag was detected near Hihifo in Tonga

Posted by admin on December 3, 2017 0 Comments

Earthquake location -15.005S, -173.2131WA light earthquake magnitude 4.2 (ml/mb) has occurred on Saturday, 119 km NNE of Hihifo, Tonga (74 miles). The epicenter of the earthquake was roughly 32.29 km (20 miles) below the earth’s surface. Date and time of earthquake in UTC/GMT: 04/11/17 / 2017-11-04 13:00:20 / November 4, 2017 @ 1:00 pm. Event ids that are associated to the earthquake: us2000bn99. Id of event: us2000bn99. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The 4.2-magnitude earthquake has occurred at 01:00:20 / 1:00 am (local time epicenter). Exact location of earthquake, -173.2131° West, -15.005° South, depth 32.29 km.

In the past 24 hours, there have been thirteen, in the last 10 days eighteen, in the past 30 days twenty-one and in the last 365 days sixty-seven earthquakes of magnitude 3.0 or greater that have been detected in the same area. There are an estimated 13,000 light quakes in the world each year. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

How would you describe the shaking?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 119 km NNE of Hihifo, Tonga.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude -173.2131° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -15.005° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 32.29 km Depth of the event in kilometers.
Place 119km NNE 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 2017-11-04 13:00:20 Time when the event occurred. UTC/GMT
Updated 2017-12-03 17:48:18 Time when the event was most recently updated. UTC/GMT
Timezone offset -720 Timezone offset from UTC in minutes at the event epicenter.
Felt 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 271 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 1.766 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.83 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 146 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 us2000bn99 Id of event.
Event Code 2000bn99 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000bn99, A comma-separated list of event ids that are associated to an event.

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