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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.8 mag has occurred near `Ohonua in Tonga


Earthquake location -22.1173S, -174.9052WA light earthquake with magnitude 4.8 (ml/mb) was reported 86 kilometers (53 miles) from `Ohonua in Tonga on Thursday. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The earthquake occurred at a depth of 35 km (22 miles). Id of earthquake: us1000ee4i. Event ids that are associated: us1000ee4i. Global date and time of event UTC/GMT: 24/05/18 / 2018-05-24 17:06:21 / May 24, 2018 @ 5:06 pm. The temblor was picked up at 05:06:21 / 5:06 am (local time epicenter). Exact location of earthquake, longitude -174.9052 West, latitude -22.1173 South, depth = 35 km.

Country/countries that might be effected, Tonga (c. 123 000 pop). Nearest cities/city/villages to epicentrum/hypocenter was ‘Ohonua (min 5000 pop). Epicenter of the earthquake was 87 km (54 miles) from ‘Ohonua (c. 1 200 pop).

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

Did you feel anything?

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. 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: 86 km S of `Ohonua, Tonga.

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More information

Parameter Value Description
Magnitude 4.8 mb The magnitude for the event.
Longitude -174.9052° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -22.1173° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 35 km Depth of the event in kilometers.
Place 86km S of `Ohonua, Tonga Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-05-24 17:06:21 Time when the event occurred. UTC/GMT
Updated 2018-06-12 19:27:50 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 5.558 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.45 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 128 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 us1000ee4i Id of event.
Event Code 1000ee4i An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000ee4i, A comma-separated list of event ids that are associated to an event.

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