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Light World Earthquakes Magnitude 4-4.9

Light earthquake: M4.1 quake has struck near Neiafu in Tonga

Posted by admin on December 19, 2016 0 Comments

Earthquake location -17.945S, -174.7552WA light earthquake magnitude 4.1 (ml/mb) has occurred on Monday, 112 km NW of Neiafu, Tonga (70 miles). The earthquake was roughly at a depth of 223 km (139 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of earthquake, longitude -174.7552 West, latitude -17.945 South, depth = 223 km. Exact time and date of earthquake 05/12/16 / 2016-12-05 12:18:13 / December 5, 2016 @ 12:18 pm UTC/GMT. Id of earthquake: us2000807r. Event ids that are associated: us2000807r. The 4.1-magnitude earthquake was detected at 00:18:13 / 12:18 am (local time epicenter).

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

Did you feel the quake?

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. This data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 112 km NW of Neiafu, Tonga.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude -174.7552° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -17.945° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 223 km Depth of the event in kilometers.
Place 112km NW of Neiafu, Tonga Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2016-12-05 12:18:13 Time when the event occurred. UTC/GMT
Updated 2016-12-19 11:15:33 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 259 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 4.717 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.34 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 125 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 us2000807r Id of event.
Event Code 2000807r An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000807r, A comma-separated list of event ids that are associated to an event.

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