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Light World Earthquakes Magnitude 4-4.9

Light earthquake: M4.6 quake has struck near Hihifo in Tonga


Earthquake location -16.311S, -173.1681WA light earthquake magnitude 4.6 (ml/mb) has occurred on Sunday, 73 kilometers (45 miles) from Hihifo in Tonga. Event id: us1000emt3. Ids that are associated to the earthquake: us1000emt3. Date and time of earthquake in UTC/GMT: 10/06/18 / 2018-06-10 18:32:07 / June 10, 2018 @ 6:32 pm. Exact location of earthquake, longitude -173.1681 West, latitude -16.311 South, depth = 10 km. The earthquake occurred at a depth of 10 km (6 miles) below the earth’s surface. The temblor was picked up at 06:32:07 / 6:32 am (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

Epicenter of the earthquake was 78 km (48 miles) from Hihifo (c. 800 pop). Nearest cities/city/villages to epicentrum/hypocenter was Hihifo (min 5000 pop). Nearby country/countries, Tonga (c. 123 000 pop) (That might be effected).

There are an estimated 13,000 light earthquakes in the world each year. In the past 24 hours, there have been four, in the last 10 days six, in the past 30 days eight and in the last 365 days fourty-five 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.

Did you feel the quake?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home 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: 73 km ESE of Hihifo, Tonga.

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More information

Parameter Value Description
Magnitude 4.6 mb The magnitude for the event.
Longitude -173.1681° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -16.311° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 73km ESE 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 2018-06-10 18:32:07 Time when the event occurred. UTC/GMT
Updated 2018-07-08 15:03:58 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 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 2.739 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.98 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 103 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 us1000emt3 Id of event.
Event Code 1000emt3 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000emt3, A comma-separated list of event ids that are associated to an event.

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