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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.1 mag strikes near Nuku`alofa in Tonga

Posted by admin on March 7, 2016 0 Comments

Earthquake location -19.6102S, -176.6841WA light earthquake with magnitude 4.1 (ml/mb) was detected on Monday, 228 km NW of Nuku`alofa, Tonga (142 miles). Id of earthquake: us10004smp. Event ids that are associated: us10004smp. 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 478.01 km (297 miles) below the earth’s surface. Exact location of event, longitude -176.6841 West, latitude -19.6102 South, depth = 478.01 km. The 4.1-magnitude earthquake has occurred at 11:18:43 / 11:18 am (local time epicenter). Exact time and date of earthquake 22/02/16 / 2016-02-22 23:18:43 / February 22, 2016 @ 11:18 pm UTC/GMT.

There are an estimated 13,000 light quakes in the world each year. In the past 24 hours, there have been one, in the last 10 days two, in the past 30 days two and in the last 365 days fourty-one 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.

Did you feel it?

Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. 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: 228 km NW of Nuku`alofa, Tonga.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude -176.6841° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -19.6102° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 478.01 km Depth of the event in kilometers.
Place 228km NW of Nuku`alofa, Tonga Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2016-02-22 23:18:43 Time when the event occurred. UTC/GMT
Updated 2016-03-07 00:30:19 Time when the event was most recently updated. UTC/GMT
Timezone offset -720 Timezone offset from UTC in minutes at the event epicenter.
Felt 0 The total number of felt reports
CDI 1 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 7.363 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.55 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 134 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 us10004smp Id of event.
Event Code 10004smp An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us10004smp, A comma-separated list of event ids that are associated to an event.

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