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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.6 mag was detected near Neiafu in Tonga


Earthquake location -19.0739S, -173.5934WA light earthquake with magnitude 4.6 (ml/mb) was detected on Friday, 62 kilometers (39 miles) from Neiafu in Tonga. The 4.6-magnitude earthquake has occurred at 04:38:19 / 4:38 am (local time epicenter). Global time and date of event 20/03/20 / 2020-03-20 16:38:19 / March 20, 2020 @ 4:38 pm UTC/GMT. Unique identifier: us70008h0i. Ids that are associated to the event: us70008h0i. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of earthquake, -173.5934° West, -19.0739° South, depth 10 km. The epicenter was at a depth of 10 km (6 miles).

The epicenter was 62 km (39 miles) from Neiafu (c. 4 300 pop). Nearby country/countries, Tonga (c. 123 000 pop) (That might be effected). Nearest cities/city/villages to epicentrum/hypocenter was Neiafu (min 5000 pop).

In the past 24 hours, there have been six, in the last 10 days ten, in the past 30 days fifteen and in the last 365 days thirty-three 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. There are an estimated 13,000 light quakes in the world each year.

Questions or comments?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home and country. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 62 km SE of Neiafu, Tonga. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.6 mb The magnitude for the event.
Longitude -173.5934° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -19.0739° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 62km SE of Neiafu, Tonga Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2020-03-20 16:38:19 Time when the event occurred. UTC/GMT
Updated 2020-04-19 15:12:41 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 3.467 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.13 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 89 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 us70008h0i Id of event.
Event Code 70008h0i An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us70008h0i, A comma-separated list of event ids that are associated to an event.

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