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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.7 mag has occurred near Pangai in Tonga


Earthquake location -20.5168S, -174.1109WA light earthquake magnitude 4.7 (ml/mb) has occurred on Monday, 83 kilometers (52 miles) from Pangai in Tonga. All ids that are associated to the event: us20002ztj. Unique identifier: us20002ztj. The epicenter of the earthquake was roughly 105.18 km (65 miles) below the earth’s surface. Exact location of event, longitude -174.1109 West, latitude -20.5168 South, depth = 105.18 km. The temblor was detected at 00:41:34 / 12:41 am (local time epicenter). Global date and time of event UTC/GMT: 06/07/15 / 2015-07-06 12:41:34 / July 6, 2015 @ 12:41 pm. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

Event epicenter was 82 km (51 miles) from Pangai (c. 1 700 pop). Closest city/cities/towns to epicentrum/hypocenter was Pangai (min 5000 pop). Country/countries that might be effected, Tonga (c. 123 000 pop).

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

Did you feel it?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city 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: 83 km SSE of Pangai, Tonga.

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More information

Parameter Value Description
Magnitude 4.7 mb The magnitude for the event.
Longitude -174.1109° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -20.5168° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 105.18 km Depth of the event in kilometers.
Place 83km SSE of Pangai, Tonga Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2015-07-06 12:41:34 Time when the event occurred. UTC/GMT
Updated 2015-07-25 07:12:25 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 340 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 4.191 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.51 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 129 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 us20002ztj Id of event.
Event Code 20002ztj An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us20002ztj, A comma-separated list of event ids that are associated to an event.

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