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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.2 mag was detected near Hihifo in Tonga



Earthquake location -15.2229S, -174.1897WA light earthquake magnitude 4.2 (ml/mb) has occurred on Thursday, 93 kilometers (58 miles) from Hihifo in Tonga. The 4.2-magnitude earthquake has occurred at 11:27:13 / 11:27 am (local time epicenter). Event id: us10007vse. Ids that are associated to the earthquake: us10007vse. The epicenter of the earthquake was roughly 360.72 km (224 miles) below the earth’s surface. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of event, depth 360.72 km, -174.1897° West, -15.2229° South. Global time and date of event 12/01/17 / 2017-01-12 23:27:13 / January 12, 2017 @ 11:27 pm UTC/GMT.

The epicenter was 92 km (57 miles) from Hihifo (c. 800 pop). Closest city/cities/towns to epicentrum/hypocenter was Hihifo (min 5000 pop). Close country/countries that might be effected, Tonga (c. 123 000 pop).

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. In the past 24 hours, there have been three, in the last 10 days four, in the past 30 days five and in the last 365 days fourty-seven earthquakes of magnitude 3.0 or greater that was reported nearby.

Did you feel the quake?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity 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: 93 km NNW of Hihifo, Tonga.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude -174.1897° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -15.2229° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 360.72 km Depth of the event in kilometers.
Place 93km NNW 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 2017-01-12 23:27:13 Time when the event occurred. UTC/GMT
Updated 2017-01-29 04:56:03 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 2.676 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.3 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 155 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 us10007vse Id of event.
Event Code 10007vse An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us10007vse, A comma-separated list of event ids that are associated to an event.

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