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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.6 mag was detected near Hihifo in Tonga

Posted by admin on July 8, 2018 0 Comments

Earthquake location -15.1788S, -173.5882WA light earthquake magnitude 4.6 (ml/mb) strikes 87 kilometers (54 miles) from Hihifo in Tonga on Friday. Exact location of event, depth 10 km, -173.5882° West, -15.1788° South. The temblor was picked up at 09:26:00 / 9:26 am (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Date and time of earthquake in UTC/GMT: 29/06/18 / 2018-06-29 21:26:00 / June 29, 2018 @ 9:26 pm. The earthquake occurred at a depth of 10 km (6 miles) below the earth’s surface. Id of earthquake: us2000fxjz. Event ids that are associated: us2000fxjz.

Close country/countries that might be effected, Tonga (c. 123 000 pop). Closest city/cities/towns to epicentrum/hypocenter was Hihifo (min 5000 pop). The epicenter was 89 km (55 miles) from Hihifo (c. 800 pop).

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. Each year there are an estimated 13,000 light earthquakes in the world. In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days eight and in the last 365 days seventy-five earthquakes of magnitude 3.0 or greater that have been detected in the same area.

Did you feel anything?

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: 87 km NNE of Hihifo, Tonga.

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More information

Parameter Value Description
Magnitude 4.6 mb The magnitude for the event.
Longitude -173.5882° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -15.1788° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 87km NNE 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 2018-06-29 21:26:00 Time when the event occurred. UTC/GMT
Updated 2018-07-08 23:01:29 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 5.222 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.65 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 109 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 us2000fxjz Id of event.
Event Code 2000fxjz An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000fxjz, A comma-separated list of event ids that are associated to an event.

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