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Light World Earthquakes Magnitude 4-4.9

Light earthquake: M4.4 quake has struck near Neiafu in Tonga

Posted by admin on July 14, 2015 0 Comments

Earthquake location -17.347S, -174.2734WA light earthquake with magnitude 4.4 (ml/mb) was detected on Sunday, 147 km NNW of Neiafu, Tonga (91 miles). The earthquake occurred at a depth of 103.77 km (64 miles) below the earth’s surface. Exact location of event, longitude -174.2734 West, latitude -17.347 South, depth = 103.77 km. All ids that are associated to the event: us20002xem. Unique identifier: us20002xem. The 4.4-magnitude earthquake has occurred at 13:22:16 / 1:22 pm (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact time and date of event in UTC/GMT: 29/06/15 / 2015-06-29 01:22:16 / June 29, 2015 @ 1:22 am.

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 two, in the past 30 days five and in the last 365 days twenty-one earthquakes of magnitude 3.0 or greater that was reported nearby. Each year there are an estimated 13,000 light earthquakes in the world.

Did you feel the quake?

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. 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: 147 km NNW of Neiafu, Tonga.

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More information

Parameter Value Description
Magnitude 4.4 mb The magnitude for the event.
Longitude -174.2734° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -17.347° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 103.77 km Depth of the event in kilometers.
Place 147km NNW 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 2015-06-29 01:22:16 Time when the event occurred. UTC/GMT
Updated 2015-07-14 22:49:19 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 298 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 4.179 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.94 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 71 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 us20002xem Id of event.
Event Code 20002xem An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us20002xem, A comma-separated list of event ids that are associated to an event.

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