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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.5 mag was detected near Hihifo in Tonga

Posted by admin on August 22, 2015 0 Comments

Earthquake location -15.6338S, -172.9485WA light earthquake with magnitude 4.5 (ml/mb) was reported 92 km ENE of Hihifo, Tonga (57 miles) on Saturday. Exact location of event, depth 8.18 km, -172.9485° West, -15.6338° South. The temblor was detected at 07:41:36 / 7:41 am (local time epicenter). The epicenter of the earthquake was roughly 8.18 km (5 miles) below the earth’s surface. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). All ids that are associated to the event: us100031z0. Unique identifier: us100031z0. Exact time and date of earthquake 25/07/15 / 2015-07-25 19:41:36 / July 25, 2015 @ 7:41 pm UTC/GMT.

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 five, in the last 10 days five, in the past 30 days eight and in the last 365 days sixty-three earthquakes of magnitude 3.0 or greater that have been detected in the same area.

Did you feel the quake?

How did you react? Was there any damage to buildings? Leave a comment or report about shaking, activity 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: 92 km ENE of Hihifo, Tonga.

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More information

Parameter Value Description
Magnitude 4.5 mb The magnitude for the event.
Longitude -172.9485° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -15.6338° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 8.18 km Depth of the event in kilometers.
Place 92km ENE 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 2015-07-25 19:41:36 Time when the event occurred. UTC/GMT
Updated 2015-08-21 23:54:07 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 2.055 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.84 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 107 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 us100031z0 Id of event.
Event Code 100031z0 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us100031z0, A comma-separated list of event ids that are associated to an event.

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