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Earthquake breaking news, Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.6 mag strikes near Hihifo in Tonga


Earthquake location -15.6394S, -173.681WA light earthquake magnitude 4.6 (ml/mb) has struck on Thursday, 35 kilometers (22 miles) from Hihifo in Tonga. The 4.6-magnitude earthquake was detected at 15:19:03 / 3:19 pm (local time epicenter). The earthquake occurred at a depth of 101.6 km (63 miles) below the earth’s surface. Exact location of event, longitude -173.681 West, latitude -15.6394 South, depth = 101.6 km. Unique identifier: us600055sc. Ids that are associated to the event: us600055sc. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Date and time of earthquake in UTC/GMT: 16/08/19 / 2019-08-16 03:19:03 / August 16, 2019 @ 3:19 am.

Country/countries that might be effected, Tonga (c. 123 000 pop). Epicenter of the earthquake was 37 km (23 miles) from Hihifo (c. 800 pop). Closest city/cities/towns to epicentrum/hypocenter was Hihifo (min 5000 pop).

There are an estimated 13,000 light quakes in the world each year. In the past 24 hours, there have been one, in the last 10 days two, in the past 30 days five and in the last 365 days sixty-six earthquakes of magnitude 3.0 or greater that was reported nearby. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

Questions or comments?

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: 35 km NNE of Hihifo, Tonga.

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More information

Parameter Value Description
Magnitude 4.6 mb The magnitude for the event.
Longitude -173.681° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -15.6394° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 101.6 km Depth of the event in kilometers.
Place 35km 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 2019-08-16 03:19:03 Time when the event occurred. UTC/GMT
Updated 2019-08-16 03:38:33 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 326 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 4.49 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.98 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 97 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 us600055sc Id of event.
Event Code 600055sc An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us600055sc, A comma-separated list of event ids that are associated to an event.

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