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Earthquake breaking news, Light World Earthquakes Magnitude 4-4.9

Light earthquake 4.8 mag, 66 km SSE of Hihifo, Tonga



Earthquake location -16.4597S, -173.4121WA light earthquake with magnitude 4.8 (ml/mb) was reported 66 kilometers (41 miles) from Hihifo in Tonga on Thursday. The earthquake occurred at a depth of 98.38 km (61 miles) below the earth’s surface. The 4.8-magnitude earthquake was detected at 21:15:56 / 9:15 pm (local time epicenter). Global time and date of event 21/07/17 / 2017-07-21 09:15:56 / July 21, 2017 @ 9:15 am UTC/GMT. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Event ids that are associated to the earthquake: us20009yw6. Id of event: us20009yw6. Exact location of event, depth 98.38 km, -173.4121° West, -16.4597° South.

Epicenter of the event was 70 km (43 miles) from Hihifo (c. 800 pop). Nearest cities/city/towns to hypocenter/epicentrum was Hihifo (min 5000 pop). Nearby country/countries, Tonga (c. 123 000 pop) (That might be effected).

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

Did you feel anything?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity 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: 66 km SSE of Hihifo, Tonga.

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More information

Parameter Value Description
Magnitude 4.8 mb The magnitude for the event.
Longitude -173.4121° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -16.4597° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 98.38 km Depth of the event in kilometers.
Place 66km SSE 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 2017-07-21 09:15:56 Time when the event occurred. UTC/GMT
Updated 2017-07-21 09:34:21 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 354 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 2.986 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.89 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 58 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 us20009yw6 Id of event.
Event Code 20009yw6 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us20009yw6, A comma-separated list of event ids that are associated to an event.

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