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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.3 mag was detected near Havelu in Tonga

Posted by admin on May 29, 2018 0 Comments

Earthquake location -21.2795S, -175.588WA light earthquake with magnitude 4.3 (ml/mb) was detected on Tuesday, 41 kilometers (25 miles) from Havelu in Tonga. The earthquake was roughly at a depth of 78.27 km (49 miles). Exact time and date of earthquake 16/05/18 / 2018-05-16 01:40:22 / May 16, 2018 @ 1:40 am UTC/GMT. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Event id: us1000e81d. Ids that are associated to the earthquake: us1000e81d. Exact location of event, longitude -175.588 West, latitude -21.2795 South, depth = 78.27 km. The temblor was picked up at 13:40:22 / 1:40 pm (local time epicenter).

Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was ‘Ohonua, Nuku‘alofa. Country/countries that might be effected, Tonga (c. 123 000 pop). Event epicenter was 43 km (27 miles) from Nuku‘alofa (c. 22 400 pop), 66 km (41 miles) from ‘Ohonua (c. 1 200 pop).

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

Did you feel the quake?

Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 41 km WSW of Havelu, Tonga. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.3 mb The magnitude for the event.
Longitude -175.588° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -21.2795° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 78.27 km Depth of the event in kilometers.
Place 41km WSW of Havelu, Tonga Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-05-16 01:40:22 Time when the event occurred. UTC/GMT
Updated 2018-05-29 01:42:58 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 284 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 5.751 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.15 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 129 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 us1000e81d Id of event.
Event Code 1000e81d An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000e81d, A comma-separated list of event ids that are associated to an event.

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