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Light World Earthquakes Magnitude 4-4.9

Light earthquake 4.5 mag, 150 km NW of Havelu, Tonga

Posted by admin on March 7, 2019 0 Comments

Earthquake location -20.3432S, -176.3854WA light earthquake magnitude 4.5 (ml/mb) has occurred on Wednesday, 150 km NW of Havelu, Tonga (93 miles). The temblor was reported at 07:46:08 / 7:46 am (local time epicenter). Id of earthquake: us2000jnbk. Event ids that are associated: us2000jnbk. Exact location of event, longitude -176.3854 West, latitude -20.3432 South, depth = 229.46 km. Date and time of earthquake in UTC/GMT: 06/02/19 / 2019-02-06 19:46:08 / February 6, 2019 @ 7:46 pm. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The earthquake occurred at a depth of 229.46 km (143 miles) below the earth’s surface.

There are an estimated 13,000 light earthquakes in the world each year. 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 three and in the last 365 days twenty earthquakes of magnitude 3.0 or greater that have been detected in the same area.

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: 150 km NW of Havelu, Tonga.

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More information

Parameter Value Description
Magnitude 4.5 mb The magnitude for the event.
Longitude -176.3854° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -20.3432° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 229.46 km Depth of the event in kilometers.
Place 150km NW 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 2019-02-06 19:46:08 Time when the event occurred. UTC/GMT
Updated 2019-03-07 22:52:59 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 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 5.861 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.86 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 131 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 us2000jnbk Id of event.
Event Code 2000jnbk An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000jnbk, A comma-separated list of event ids that are associated to an event.

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