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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.6 mag strikes near Neiafu in Tonga


Earthquake location -18.4695S, -173.2665WA light earthquake magnitude 4.6 (ml/mb) strikes 78 kilometers (48 miles) from Neiafu in Tonga on Tuesday. Exact location of earthquake, -173.2665° West, -18.4695° South, depth 10 km. The 4.6-magnitude earthquake was detected at 09:05:48 / 9:05 am (local time epicenter). Exact time and date of earthquake 10/05/16 / 2016-05-10 21:05:48 / May 10, 2016 @ 9:05 pm UTC/GMT. 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 10 km (6 miles) below the earth’s surface. All ids that are associated to the event: us10005i97. Unique identifier: us10005i97.

Close country/countries that might be effected, Tonga (c. 123 000 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Neiafu. Epicenter of the earthquake was 78 km (49 miles) from Neiafu (c. 4 300 pop).

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 one, in the past 30 days two and in the last 365 days twenty-seven earthquakes of magnitude 3.0 or greater that has occurred nearby. There are an estimated 13,000 light earthquakes in the world each year.

Did you feel the quake?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity 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: 78 km ENE of Neiafu, Tonga.

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More information

Parameter Value Description
Magnitude 4.6 mb The magnitude for the event.
Longitude -173.2665° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -18.4695° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 78km ENE 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 2016-05-10 21:05:48 Time when the event occurred. UTC/GMT
Updated 2016-05-31 02:16:18 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 326 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 3.22 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.16 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 104 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 us10005i97 Id of event.
Event Code 10005i97 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us10005i97, A comma-separated list of event ids that are associated to an event.

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