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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.5 mag was detected near Hihifo in Tonga


Earthquake location -15.2168S, -173.4522WA light earthquake magnitude 4.5 (ml/mb) has struck on Friday, 87 kilometers (54 miles) from Hihifo in Tonga. All ids that are associated to the event: us10002wcc. Unique identifier: us10002wcc. 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. Exact location of event, longitude -173.4522 West, latitude -15.2168 South, depth = 10 km. The temblor was picked up at 20:12:52 / 8:12 pm (local time epicenter). Global time and date of event 11/07/15 / 2015-07-11 08:12:52 / July 11, 2015 @ 8:12 am UTC/GMT.

Nearby country/countries that might be effected, Tonga (c. 123 000 pop). Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Hihifo. Epicenter of the event was 90 km (56 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 nine and in the last 365 days sixty-one earthquakes of magnitude 3.0 or greater that have been detected in the same area. There are an estimated 13,000 light quakes in the world each year. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

Did you feel it?

How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking and damage at your home, city and country. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 87 km NNE 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 -173.4522° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -15.2168° 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 2015-07-11 08:12:52 Time when the event occurred. UTC/GMT
Updated 2015-08-05 05:28:07 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 5.107 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.01 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 97 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 us10002wcc Id of event.
Event Code 10002wcc An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us10002wcc, A comma-separated list of event ids that are associated to an event.

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