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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.5 mag was detected near Neiafu in Tonga

Posted by admin on July 2, 2019 0 Comments

Earthquake location -18.5073S, -174.0796WA light earthquake with magnitude 4.5 (ml/mb) was detected on Wednesday, 18 kilometers (11 miles) from Neiafu in Tonga. Exact location of earthquake, -174.0796° West, -18.5073° South, depth 35 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The epicenter of the earthquake was roughly 35 km (22 miles) below the earth’s surface. Date and time of earthquake in UTC/GMT: 18/06/19 / 2019-06-18 15:48:07 / June 18, 2019 @ 3:48 pm. The 4.5-magnitude earthquake has occurred at 04:48:07 / 4:48 am (local time epicenter). Unique identifier: us700048ei. Ids that are associated to the event: us700048ei.

Close country/countries that might be effected, Tonga (c. 123 000 pop). Epicenter of the earthquake was 19 km (12 miles) from Neiafu (c. 4 300 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Neiafu.

In the past 24 hours, there have been two, in the last 10 days two, in the past 30 days three and in the last 365 days twenty-six 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. Each year there are an estimated 13,000 light quakes in the world.

Did you feel it?

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. 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: 18 km NNW of Neiafu, Tonga.

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More information

Parameter Value Description
Magnitude 4.5 mb The magnitude for the event.
Longitude -174.0796° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -18.5073° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 35 km Depth of the event in kilometers.
Place 18km 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 2019-06-18 15:48:07 Time when the event occurred. UTC/GMT
Updated 2019-07-02 16:53:33 Time when the event was most recently updated. UTC/GMT
Timezone offset 780 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 3.974 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.78 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 73 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 us700048ei Id of event.
Event Code 700048ei An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us700048ei, A comma-separated list of event ids that are associated to an event.

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