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Light World Earthquakes Magnitude 4-4.9

Light earthquake 4.5 mag, 233 km SE of Hihifo, Tonga


Earthquake location -17.3505S, -172.1067WA light earthquake magnitude 4.5 (ml/mb) has struck on Friday, 233 km SE of Hihifo, Tonga (145 miles). Exact time and date of event in UTC/GMT: 26/08/17 / 2017-08-26 06:16:38 / August 26, 2017 @ 6:16 am. The earthquake occurred at a depth of 10 km (6 miles). Event ids that are associated to the earthquake: us2000ad6t. Id of event: us2000ad6t. Exact location of event, depth 10 km, -172.1067° West, -17.3505° South. The temblor was detected at 19:16:38 / 7:16 pm (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

In the past 24 hours, there have been four, in the last 10 days four, in the past 30 days six and in the last 365 days twenty earthquakes of magnitude 3.0 or greater that have been detected in the same area. 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.

Did you feel it?

How did you react? Was there any damage to buildings? Leave a comment or report about shaking, activity and damage at your home, city and country. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 233 km SE of Hihifo, Tonga. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.5 mb The magnitude for the event.
Longitude -172.1067° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -17.3505° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 233km SE 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 2017-08-26 06:16:38 Time when the event occurred. UTC/GMT
Updated 2017-09-13 12:12:44 Time when the event was most recently updated. UTC/GMT
Timezone offset -660 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 312 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 2.69 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.32 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 55 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 us2000ad6t Id of event.
Event Code 2000ad6t An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000ad6t, A comma-separated list of event ids that are associated to an event.

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