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Earthquake breaking news, Moderate World Earthquakes Magnitude 5–5.9

Moderate earthquake: M5.1 quake has struck near `Ohonua in Tonga


Earthquake location -21.9142S, -174.5735WA moderate earthquake magnitude 5.1 (ml/mb) has occurred on Friday, 75 kilometers (47 miles) from `Ohonua in Tonga. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Id of earthquake: us2000c4tw. Event ids that are associated: us2000c4tw. Exact location, longitude -174.5735° West, latitude -21.9142° South, depth = 10 km. The earthquake was roughly at a depth of 10 km (6 miles). Date and time of earthquake in UTC/GMT: 15/12/17 / 2017-12-15 12:52:38 / December 15, 2017 @ 12:52 pm. The 5.1-magnitude earthquake was detected at 00:52:38 / 12:52 am (local time epicenter).

Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was ‘Ohonua. Event epicenter was 75 km (47 miles) from ‘Ohonua (c. 1 200 pop). Close country/countries, Tonga (c. 123 000 pop) (That might be effected).

In the past 24 hours, there have been two, in the last 10 days two, in the past 30 days three and in the last 365 days seventeen earthquakes of magnitude 3.0 or greater that has struck near. There are an estimated 1320 moderate quakes in the world each year. Earthquakes 5.0 to 6.0 may cause light damage to buildings and other structures.

Did you feel the quake?

How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking and damage at your home, city and country. The information in this article comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, detected near: 75 km SSE of `Ohonua, Tonga.

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More information

Parameter Value Description
Magnitude 5.1 mb The magnitude for the event.
Longitude -174.5735° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -21.9142° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 75km SSE 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 2017-12-15 12:52:38 Time when the event occurred. UTC/GMT
Updated 2017-12-15 13:13:00 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 400 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 5.19 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.2 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 82 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 us2000c4tw Id of event.
Event Code 2000c4tw An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000c4tw, A comma-separated list of event ids that are associated to an event.

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