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Light earthquake: M4.5 quake has struck near Hihifo in Tonga

Posted by admin on January 28, 2018 0 Comments

Earthquake location -15.6605S, -173.5626WA light earthquake magnitude 4.5 (ml/mb) has struck on Sunday, 37 kilometers (23 miles) from Hihifo in Tonga. The epicenter was at a depth of 35 km (22 miles). The temblor was picked up at 02:28:20 / 2:28 am (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Event id: us2000cpwf. Ids that are associated to the earthquake: us2000cpwf. Exact location of earthquake, longitude -173.5626 West, latitude -15.6605 South, depth = 35 km. Exact time and date of event in UTC/GMT: 14/01/18 / 2018-01-14 14:28:20 / January 14, 2018 @ 2:28 pm.

Country/countries that might be effected, Tonga (c. 123 000 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Hihifo. Epicenter of the event was 41 km (26 miles) from Hihifo (c. 800 pop).

In the past 24 hours, there have been two, in the last 10 days two, in the past 30 days nine and in the last 365 days ninety-four earthquakes of magnitude 3.0 or greater that have been detected in the same area. 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 anything?

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 data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 37 km NNE of Hihifo, Tonga.

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More information

Parameter Value Description
Magnitude 4.5 mb The magnitude for the event.
Longitude -173.5626° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -15.6605° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 35 km Depth of the event in kilometers.
Place 37km NNE 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 2018-01-14 14:28:20 Time when the event occurred. UTC/GMT
Updated 2018-01-28 16:52:14 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 2.452 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.58 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 117 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 us2000cpwf Id of event.
Event Code 2000cpwf An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000cpwf, A comma-separated list of event ids that are associated to an event.

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