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Light earthquake, 4.2 mag strikes near Havelu in Tonga

Posted by admin on November 10, 2018 0 Comments

Earthquake location -21.6879S, -176.8336WA light earthquake magnitude 4.2 (ml/mb) has struck on Friday, 177 km WSW of Havelu, Tonga (110 miles). The 4.2-magnitude earthquake was detected at 14:09:49 / 2:09 pm (local time epicenter). Event ids that are associated to the earthquake: us1000hq5d. Id of event: us1000hq5d. Global date and time of event UTC/GMT: 10/11/18 / 2018-11-10 02:09:49 / November 10, 2018 @ 2:09 am. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The earthquake was roughly at a depth of 314.61 km (195 miles). Exact location of earthquake, longitude -176.8336 West, latitude -21.6879 South, depth = 314.61 km.

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

How would you describe the shaking?

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: 177 km WSW of Havelu, Tonga.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude -176.8336° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -21.6879° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 314.61 km Depth of the event in kilometers.
Place 177km WSW of Havelu, Tonga Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-11-10 02:09:49 Time when the event occurred. UTC/GMT
Updated 2018-11-10 03:19:15 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 6.211 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 127 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 us1000hq5d Id of event.
Event Code 1000hq5d An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000hq5d, A comma-separated list of event ids that are associated to an event.

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