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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.2 mag was detected near Hihifo in Tonga



Earthquake location -16.1889S, -174.2221WA light earthquake magnitude 4.2 (ml/mb) has occurred on Thursday, 57 kilometers (35 miles) from Hihifo in Tonga. Id of earthquake: us20008k7m. Event ids that are associated: us20008k7m. The earthquake occurred at a depth of 157.88 km (98 miles) below the earth’s surface. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The temblor was detected at 11:34:15 / 11:34 am (local time epicenter). Global date and time of event UTC/GMT: 02/02/17 / 2017-02-02 23:34:15 / February 2, 2017 @ 11:34 pm. Exact location of event, depth 157.88 km, -174.2221° West, -16.1889° South.

Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Hihifo. Nearby country/countries, Tonga (c. 123 000 pop) (That might be effected). Earthquake epicenter was 52 km (33 miles) from Hihifo (c. 800 pop).

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. In the past 24 hours, there have been three, in the last 10 days three, in the past 30 days six and in the last 365 days fifty-six earthquakes of magnitude 3.0 or greater that has occurred nearby.

How would you describe the shaking?

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. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 57 km WSW of Hihifo, Tonga. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude -174.2221° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -16.1889° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 157.88 km Depth of the event in kilometers.
Place 57km WSW 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 2017-02-02 23:34:15 Time when the event occurred. UTC/GMT
Updated 2017-02-18 05:22:36 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 271 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 3.273 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.91 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 144 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 us20008k7m Id of event.
Event Code 20008k7m An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us20008k7m, A comma-separated list of event ids that are associated to an event.

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