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Light earthquake: M4.4 quake has struck near Neiafu in Tonga

Posted by admin on September 5, 2019 0 Comments

Earthquake location -17.4956S, -175.1475WA light earthquake magnitude 4.4 (ml/mb) strikes 177 km NW of Neiafu, Tonga (110 miles) on Thursday. Unique identifier: us600055zt. Ids that are associated to the event: us600055zt. Exact time and date of event in UTC/GMT: 09/08/19 / 2019-08-09 07:41:28 / August 9, 2019 @ 7:41 am. The epicenter of the earthquake was roughly 226.57 km (141 miles) below the earth’s surface. Exact location of event, longitude -175.1475 West, latitude -17.4956 South, depth = 226.57 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The temblor was detected at 19:41:28 / 7:41 pm (local time epicenter).

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. In the past 24 hours, there have been two, in the last 10 days four, in the past 30 days five and in the last 365 days thirty-two earthquakes of magnitude 3.0 or greater that have been detected in the same area. Each year there are an estimated 13,000 light earthquakes in the world.

Did you feel anything?

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. 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: 177 km NW of Neiafu, Tonga.

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More information

Parameter Value Description
Magnitude 4.4 mb The magnitude for the event.
Longitude -175.1475° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -17.4956° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 226.57 km Depth of the event in kilometers.
Place 177km NW of Neiafu, Tonga Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2019-08-09 07:41:28 Time when the event occurred. UTC/GMT
Updated 2019-09-05 12:24:29 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 298 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 4.821 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.56 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 130 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 us600055zt Id of event.
Event Code 600055zt An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us600055zt, A comma-separated list of event ids that are associated to an event.

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