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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.5 mag was detected near Hihifo in Tonga



Earthquake location -15.1096S, -173.6863WA light earthquake with magnitude 4.5 (ml/mb) was reported 93 kilometers (58 miles) from Hihifo in Tonga on Friday. The temblor was picked up at 18:41:43 / 6:41 pm (local time epicenter). Exact time and date of earthquake 02/04/16 / 2016-04-02 06:41:43 / April 2, 2016 @ 6:41 am UTC/GMT. The epicenter of the earthquake was roughly 17.46 km (11 miles) below the earth’s surface. Unique identifier: us20005gdc. Ids that are associated to the event: us20005gdc. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of earthquake, longitude -173.6863 West, latitude -15.1096 South, depth = 17.46 km.

Nearest cities/city/villages to epicentrum/hypocenter was Hihifo (min 5000 pop). Country/countries that might be effected, Tonga (c. 123 000 pop). Epicenter of the event was 95 km (59 miles) from Hihifo (c. 800 pop).

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

Did you feel the quake?

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. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 93 km N of Hihifo, Tonga. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.5 mb The magnitude for the event.
Longitude -173.6863° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -15.1096° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 17.46 km Depth of the event in kilometers.
Place 93km N 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 2016-04-02 06:41:43 Time when the event occurred. UTC/GMT
Updated 2016-04-29 12:02:51 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 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 2.2 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.31 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 62 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 us20005gdc Id of event.
Event Code 20005gdc An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us20005gdc, A comma-separated list of event ids that are associated to an event.

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