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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.5 mag has occurred near Hihifo in Tonga

Posted by admin on September 14, 2017 0 Comments

Earthquake location -15.1647S, -173.1082WA light earthquake with magnitude 4.5 (ml/mb) was reported 110 km NE of Hihifo, Tonga (68 miles) on Friday. Event ids that are associated to the earthquake: us2000a9qe. Id of event: us2000a9qe. Global date and time of event UTC/GMT: 19/08/17 / 2017-08-19 09:19:29 / August 19, 2017 @ 9:19 am. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location, longitude -173.1082° West, latitude -15.1647° South, depth = 10 km. The earthquake occurred at a depth of 10 km (6 miles). The 4.5-magnitude earthquake has occurred at 21:19:29 / 9:19 pm (local time epicenter).

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

How would you describe the shaking?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home and country. 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: 110 km NE of Hihifo, Tonga.

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More information

Parameter Value Description
Magnitude 4.5 mb The magnitude for the event.
Longitude -173.1082° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -15.1647° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 110km NE 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 2017-08-19 09:19:29 Time when the event occurred. UTC/GMT
Updated 2017-09-14 13:14:21 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 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 1.794 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.82 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 149 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 us2000a9qe Id of event.
Event Code 2000a9qe An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000a9qe, A comma-separated list of event ids that are associated to an event.

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