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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.8 mag has occurred near Hihifo in Tonga

Posted by admin on September 24, 2018 0 Comments

Earthquake location -16.2947S, -176.1411WA light earthquake magnitude 4.8 (ml/mb) has occurred on Thursday, 258 km W of Hihifo, Tonga (160 miles). Exact time and date of event in UTC/GMT: 30/08/18 / 2018-08-30 19:32:37 / August 30, 2018 @ 7:32 pm. Event ids that are associated to the earthquake: us2000hadb. Id of event: us2000hadb. The 4.8-magnitude earthquake has occurred at 07:32:37 / 7:32 am (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of earthquake, longitude -176.1411 West, latitude -16.2947 South, depth = 10 km. The epicenter of the earthquake was roughly 10 km (6 miles) below the earth’s surface.

There are an estimated 13,000 light quakes 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 five and in the last 365 days twenty-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.

Did you feel anything?

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. This data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 258 km W of Hihifo, Tonga.

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More information

Parameter Value Description
Magnitude 4.8 mb The magnitude for the event.
Longitude -176.1411° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -16.2947° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 258km W 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 2018-08-30 19:32:37 Time when the event occurred. UTC/GMT
Updated 2018-09-24 22:35:00 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 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 4.836 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.4 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 153 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 us2000hadb Id of event.
Event Code 2000hadb An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000hadb, A comma-separated list of event ids that are associated to an event.

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